530" lift stock and have screw in studs and flow much better on the exhaust than the stock L31's. GENERAL MOTORS TECHNICAL INFORMATION Engine Types | General Tips. This Top End Kit provides the necessary components to convert a 1986-earlier 350 C. 00" on the LT4. The main difference in the LT1 is the reverse cooling design, which cools the cylinder heads first, then the block. The Camaro and Corvette received aluminum cylinder heads, which helped increase performance. Since 1938, Edelbrock has manufactured its core products in the USA for quality & performance. It takes major water passage modifications to run SBC heads on an LT1 engine and visa-versa. The engine is OBDII compatible and was basically a standard 350 with redesigned cyli. They have a combustion chamber that is more like the L98 TPI heads 081 and 083 cast iron. 1968 Elcamino with a Vortec 350 crate engine and a 350 turbo tranny. It does not have a recessed crank. Chevelle chevy. Marine Engines 4 Less has over 25 years of experience in the marine and high performance engine industry. 210cc SBC AFR Heads for high RPM 350 or race oriented 350-400ci applications. All these engines have the Vortec 350 L31 iron cylinder heads installed. the vortecs were based on the iron LT1 heads, but they are better in. pipe fitted directly into manifold: Part # :1674R 350 1995 Camaro, Firebird, A. The last model to come out was the Vortec 5700 which is known as the L31 variant. Stainless Steel Intake Valves, Small Block Chevy LT1, FAST BURN & VORTEC. 92 Corvette LT1 ALUMINUM HEADS. but i was planning on using 350 heads with a 64 cc chamber to lower the compression a bit. I understand vortec heads will fit and all u need to do is change the valve cover and intake. Vortecs are based off of the LT1 heads but are made to be used on older blocks without the reverse cooling. An easy way to gain 20-40 horsepower on any 1955-and-newer Small-Block Chevrolet V-8 (except later-style LT1/LT4 engines with reverse-flow cooling) is by installing a set of Vortec cylinder heads. Best intake for TPI in my opinion is the TPIS miniram. 2L) marine engines. LT1 was installed with a stock 1995 PCM and wiring harness I modified for the swap. The kit includes a flexplate, 11mm flex plate bolts, crank spacer. See more ideas about Engineering, Chevy and Hot Rods. Mar 11, 2019- Explore Ford Wayne's board "Lt1 engines" on Pinterest. Cooling off the heads first enabled the LT1 to reach new horsepower levels. Featuring powerful port designs that are packed with air speed and unbeatable, made in the U. Can anyone let me know if this combo will work?I believe this block was made in the late 60s and early 70s. 7L 350 Exhaust Manifold (NEW):1957-1979 which isn't a whole lot less than block huggers, this is similar to the old Ramhorn Vette manifolds which I believe fit. There are several aftermarket Vortec heads that cure the huge internet myth of cracking decks. The cylinder heads feature combustion chambers and intake ports very similar to those of the LT1 V8, but without the reverse-flow cooling. 3 Vortec heads, Lt1. It is not recommended that the heads be modified to accept early design intake manifolds. Hey i found a pair of vortec heads in for sale for 400 that has been rebuild. The LT1 alum. How can one say no? I don't yet know how much it would be for a set of heads or the work to make it fit on the tahoe/future engine swap but I will look all of that up in time. You can get brackets to make the accs. Automotive enthusiasts are quick to note that the 350 and the 5. Ok maybe somebody on here can give me an answer! I'm 22 years old and know a little about the 350 vortecs bc that's all I have and stayed with and my buddy is 19 and thinks he knows more lol of cou. Supposedly better mileage/more hp/tq. GENERAL MOTORS TECHNICAL INFORMATION Engine Types | General Tips. the thing i want to do is make it a fuel injection style engine, so he's goin to sell me the parts i need if it can be. The motor is a 1993 LT1 engine with a 4L60/700R4 transmission. You are thinking of the Vortec motoror what Chevy calls the. 8:1 compression and an lt4 hotcam with nicely ported heads and matched intake. A head, oil pan, valve covers, intake, and so on can all be used on the 265 up to the 400(steam holes required for the heads) Ford couldn't even make one engine let alone a family of engine that can make that claim. The high compression 350 heads are similiar in combustion chamber size & intake valve size to the 305 heads & will give a 305 the same performance as if using 305 heads. i got a 305 block and 350 vortec heads. The LT1 used a reverse-flow cooling system which cooled the cylinder heads first, maintaining lower cylinder temperatures and allowing the engine to run hotter using more compression than its earlier designs, thus producing more power. html 1255156 gen 2 96 350 LT1, aluminum angled spark plugs LT1 cylinder headsLT1 cylinder heads share the same head to block bolt pattern as the standard small block Chevrolet. Coolant is transferred from head to head by a steam line on the back of heads. The older 350 parts, and heads are less expensive too as a general rule. All LT1 heads use self-aligning rocker arms. What I learned is the exhaust ports sit approx 1/8" higher relative to the bolt holes than they do on older heads. I have been told that the heads that come on the Vortec are pretty free flowing, and a good for performance. The TH350 transmission was introduced in the 1969 model year as the successor to the GM Powerglide automatic transmission. Like others said, you will need a vortec style intake. The simple fact that you can take a part from one and put it on another is great. Fastburn heads are drilled with both standard SBC and Vortec bolt patterns. but i was planning on using 350 heads with a 64 cc chamber to lower the compression a bit. Also information for LT1 and the LSx-Gen III engines. Upgrading and compatibility. Shown below is a cross section comparison of the LT1 (photo A) and the LT4 (photo B) heads. The 350vortec's have more owend torque. i have found a few things that are no brainers like cam, headers, pistons, and such but i know i am missing alot. See what previous Chevy 350 buyers had to say about the quality of our engines, the warranty and the customer support. Nothing compares to a Factory Original new GM Crate Engine when it is time to replace the worn out 350ci Vortec engine in your 1996 thru 2000 Chevrolet or GMC pick-up and SUV's. Generally speaking, as the displacement of the engine increases, you want more port volume and flow out of your heads. The chambers are smaller, so these heads cannot be interchanged with any of the 350 LT1 heads. 7L vortec heads. I actually went through several lists and made some corrections before making this list. These used the Vortex technology that resulted in a vortex within the engine's combustion chamber. Plug-and-Play Vortec 350 2. 6 with 64cc heads which makes it streetable. 7 VORTEC MOTOR - Answered by a verified Chevy Mechanic. 350 vortec lt1 cam on test stand don jernigan lt1 cam, and another set of vortec heads shaved 20 thousandths. We have been building the GM Chevy 350 long blocks for almost forty years and still going strong. They allow you to install a carburetor on your LT1 engine without the hassle of running a computer or emission controls. I know that Chevy Casting Numbers are on several sites on the World Wide Web but I thought it would be a good idea to list them here too. What I learned is the exhaust ports sit approx 1/8" higher relative to the bolt holes than they do on older heads. That creates an 8. Middle Tennessee Drag Way 4-23-16. Actually the LT1 exhaust manifolds WILL bolt up to the Vortec heads as long as you drill the outside bolt holes thru the manifold flange to line up with the Vortec head bolt holes & use dowel spacers to get the mounting bolt head further out to clear the CI exhaust tube itself (this is the method I used to mount LT1 manifolds to my Vortec heads). Like others said, you will need a vortec style intake. I used Megasquirt for fuel and ignition control. 500" valves from the factory and the stock valve springs are compatible with a maximum valve lift of up to 0. EQ is a general sponsor of the International Motor Contest Association (IMCA) and the title sponsor of the IMCA Wild West Modified Tour. which is pretty much a LT1 intake designed for TPI. GM introduced its Vortec line of engines in the mid-1990s, in I4, I5, I6, V6 and three V8 configurations in various displacements from 2. Serving the Corvette originally, it pumped out 50 more horsepower than the Gen I L98 and still returned 25 mpg. 2L crate engine is now available. This fairly mild engine's fat power-band, efficient combustion, glass-smooth idle and low coolant temperatures (due to the Vortec heads and ceramic coating) make it a perfect fit for a daily-driven muscle-car or truck. 2604 is for 1987-95. Apart from the classic 350, there was a 349. Before you start, these are the things you will need : 10 quarts of dino oil (do not use synthetic for initial startup) 5 quarts of your preferred oil (for use right after install) 3 oil filters (2 standards, and 1 of your favorite) 2 gallons of coolant. Whatever you decide to. These cylinder heads are very popular in street rods, engine swaps, or the industrial market. 7 350 vortec and LS engines 15 Answers. The crankshaft in the LT1 is similar to a small block 350 crank, and has the same casting number: 14088526. Cylinder Heads for your Mercruiser Inboard engine. 7 Vortec are essentially the same engine with the same displacement. As far as volumetrically speaking, LT1 = SBC. If you don't want to the whole LT1 intake EFI conversion your best bet is to go with vortec heads. I bought a used LT1 intake off of e-bay for $200 including fuel rails. I found a cheap LT1 Impala engine nearby and after bringing it home the bottom end looks fantastic. LT1 engines were made out of cast iron while the LS1 engine. However, this 64cc chamber is still smaller than the stock Goodwrench 76cc iron castings. 305 Vortec heads are a whole different critter and don't have the same high-flow port. Before you start, these are the things you will need : 10 quarts of dino oil (do not use synthetic for initial startup) 5 quarts of your preferred oil (for use right after install) 3 oil filters (2 standards, and 1 of your favorite) 2 gallons of coolant. Outlet modified for our “Gasket-less” exhaust pipes. But the low compression 350 heads (the ones with the 1. Most cars, even old muscle cars have relatively low hood clearances. AFR LT-1 / LT-4 / Vortec Heads/ Late Model TBI/TPI Heads - Your factory accessory bolts and center bolt valve covers need to be shortened 3/16" or they will bottom out. I understand vortec heads will fit and all u need to do is change the valve cover and intake. Don't get me wrong 350's have potential, but dollar for dollar the LS will save you in the long run. 3v6 If so, will the electronics and cables work and what might be required to get this setup to work? Will it yield any real gains with a moderately modified engine (cam, exaust, K&N, power programmer, p&p heads). Must be a 350 (any year, 2 or 4 bolt is fine) Yes, you may keep your core! Core checks are sent within 60 days after core is mailed off; What is a core? A core is an old engine. it might make sense to get a set of Smallport Bowtie Vortec heads. yeah i can re-do the manifold to get the pre 86 heads to fit no problem. It is the last production Generation I small-block from Chevrolet. the vortecs were based on the iron LT1 heads, but they are better in. For an otherwise stock 350 LT1, 195cc seems to be a good intake port volume. Later ones have less material around the top of the intake ports and. World's leading marketplace. 7L engines Gen I 5. GM used that newer computer in the 2002 Chevy Express 5. See our Cylinder Heads - Quality Performance Aluminum Street Heads. Generally speaking, as the displacement of the engine increases, you want more port volume and flow out of your heads. Allied Motor Parts has over 150 years of experience of remanufacturing automotive and light truck cylinder heads. This IAC does not interchange with LT1 or LS1 throttle bodies. peace Hog So the 10HP increase but 10 ft/lbs of torque loss would make the Vortec 350 better? My L31 is rated at 330 ft/lbs and 255HP if I'm not mistaken. They are also found in much better shape and already have the holes needed. GENERAL MOTORS TECHNICAL INFORMATION Engine Types | General Tips. Will not fit Chevy Bowtie or LT1 heads. PSI specializes in the design and manufacture of Standalone Wiring Harnesses for GM Gen II, III, IV, & V LS/LT based engines and transmissions. whaT do you guys think would be best. Types of GM Vortec Heads. If you're looking to replace your heads, in my opinion AFR makes the best aftermarket heads for the LT1 / LT4 engines. the water goes from the heads then through the block) so those aren't what you want to use. Can i put them directly on my tbi 350 with now problems or should i just get them and port and polished them and put a cam in it to?iI just realy what to know is is it a direct fit and would the tbi set up go on top of it,plus well i get any power gains and fuel milage out of to so if any one has ran vortec heads on. General Motors created its 5. A head, oil pan, valve covers, intake, and so on can all be used on the 265 up to the 400(steam holes required for the heads) Ford couldn't even make one engine let alone a family of engine that can make that claim. It produces 175 hp (130 kW) and 185 ft·lb (251 N·m) of torque. If anyone can recommend which one to use as there's a few different types I will be stroking to motor later on so I won't one that will work both now and after I stroke it. For an otherwise stock 350 LT1, 195cc seems to be a good intake port volume. I was thinking along the lines of maybe intake manifold and/or heads. Set of 2 vortec heads 062 $350 Victor intake $125 Flat hydraulic camshaft around. I test ran the engine on an engine stand using Ethanol made from a moonshine still. Other heads will fit, but you will encounter troubles, including a possible 30 HP loss, depending on which head you choose. the crankshaft is the correct one for an LT1, not a 350. 7L Vortec (what you have 350 cid) Gen II 5. Hey i found a pair of vortec heads in for sale for 400 that has been rebuild. 7 Vortec heads The Votrec heads flow better and they will fit on the 305 but you will need to use a new intake manifold. lucky to get 150hp from the flat tappet cam truck 305 engines. For an otherwise stock 350 LT1, 195cc seems to be a good intake port volume. Camaro not Camero I'm going to guess its Chevy/GMC Truck 5. Answer yea they will fit but you will have to switch over to the newer style valve. By the way the 350 vortec have 255hp and 330tq not 325tq. Before you start, these are the things you will need : 10 quarts of dino oil (do not use synthetic for initial startup) 5 quarts of your preferred oil (for use right after install) 3 oil filters (2 standards, and 1 of your favorite) 2 gallons of coolant. You are thinking of the Vortec motoror what Chevy calls the. These value-priced cast-iron cylinder heads use modified combustion chambers and high-velocity port technology to provide improved performance. Basic Power has it all. These heads offer a 20. I just got my hands on a LT1 350 vortec motor out of a 95 buick roadmaster stationwagon, is it a good motor to replace my 87 merc 350(260hp) with. You will need the 1987 and up (stock vortec works too) self alining rocker arms, as the 1986 and older rockers will not work on vortec heads. If you are going to use. Can anyone let me know if this combo will work?I believe this block was made in the late 60s and early 70s. The Chevy Colorado/GMC Canyon pickups have some unique qualities that make a 100% direct plug-and-play harness a bit tricky. You can gain an inch or two by removing the plastic engine cover and cutting some of the plastic tabs on top of the Vortec intake manifold. 1977 CORVETTE L82 4 speed Daily Driver A/C Vortec heads forged F/I C3 Stingray Original Z28/ LT1/ L82 valve covers go with car. Then, in 1997, the third-generation small block was released. put a wieand action plus intake and stock hei and one of my favorite carbs a 850. I found a set of 1992 aluminum LT1 heads that I hope is better (more flow and more compression) than the iron heads I have on my suburban now. Ranging in marine power ratings from 260hp for the 305, 300hp for the 350 and 340hp for the 377. GM used that newer computer in the 2002 Chevy Express 5. Keep in mind also that in you search for heads that there are 3 different 5. 7 RECONDITIONED LONG ENGINE 1986-These engines are re-manufactured in. The cylinder heads feature combustion chambers and intake ports very similar to those of the LT1 V8, but without the reverse-flow cooling. The Vortec heads are a little bit lighter than the older heads and have a "kidney" or "heart" shaped combustion chamber that is more efficient than the double hump chamber. The ports are simular to the 350 vortec heads. The LT1 is a good engine with advanced features like a gear-driven reverse cooling system that sends coolant to the heads first, allowing a higher compression ratio. 3, ls1 hot cam, home ported 241 heads with z06 springs, edelbrock. Small Block and Big Block Chevrolet engines have become legendary since they were introduced over 50 years ago. Slight elongation of four center holes may be required for 1987 and later cylinder heads. Will this fit a 00 Chevy Silverado v8 5. What are the LT1 basic specs? Displacement: 350 cubic inches, 5733 cubic centimeters, 5. The Vortec heads come with a 64cc combustion chamber, while the Corvette heads use a smaller 58cc chamber. AFR's 190cc Vortec Street heads are the preferred choice over reworked factory heads. Chevrolet entered the Generation II era. stock chambers should be 58cc. Edelbrock is the most respected name in performance. Gen I Vortec Truck IAC Valves. This episode covers a Vortec Head Swap on a 1968 Chevelle with a late model Goodwrench 350 Crate Motor. Gen III LS PCM Conversion Upgrades: Projects, Lessons and Strategies includes instructional photos, checklists, and step-by-step instructions on upgrading to the GM Gen III LS-Series PCM, ECM, Electronics, and POWERTRAIN CONTROL SYSTEMS. Below are several variations of our 383 Stroker Engines. (itake manifold, transmission,ect. Set of 2 vortec 062 heads Hydraulic camshaft around 450 lift with lifter great shape Victor intake for vortec and old school sbc Set of new valve spring with hardware LT4 LT1 $300 Call or text 416 659 2049 Will trade for foxbody parts Camaro nova. GM 350 TBI vs. It is the last production Generation I small-block from Chevrolet. 94" on the LT1 and 2. Body has very little rust. 5 version, this came out in 1992, and it was called the LT1 variant, it sported the same 4″ bore as the classic 350. which is pretty much a LT1 intake designed for TPI. This page is to help those guys out with swapping a 1996-2000 Vortec 4. Assault Racing Products A6191 Small Block Chevy 350 Vortec TBI Finned Polished Aluminum Tall Style Valve Covers. The Vortec heads reigned supreme in every category except the "amount of work hours to make them flow better" category where the old style heads still rule. The necessary clearance must be there for motor mounts, front crossmembers, steering columns and steering boxes, firewalls, etc. My LT1 engine has brass freeze plugs in it, so you may not have to change the plugs in your block. for sale is a recently rebuilt vortec tbi engine, with headers. Heads come completly assembled with valves, springs, retainers, and 3/8" rocker studs. The Camaro and Corvette received aluminum cylinder heads, which helped increase performance. FREE shipping on pre-ordered heads!!! General Sizing Guidelines for SBC AFR Heads: 180cc SBC AFR heads for street oriented 302-350's and high torque applications. PERFORMER VORTEC (IDLE-5500 RPM) Based on the popular and powerful Edelbrock #2101, this dual-plane intake is designed for the street rod, industrial and engine swap market utilizing 262-400 c. New Aftermarket 5 7L/350 cid Marine Cylinder Head 1996-newer This is a BRAND NEW Aftermarket marine cylinder head for all 5 7L/350 marine engines made from 1996-newer that use the Vortec cylinder head 4 bolt holes on each head This is an aftermarket cylinder head This head is complete with brand new. A high-flow cylinder head with straighter intake ports and a higher compression ratio delivers significantly better combustion for all fuels. The last model to come out was the Vortec 5700 which is known as the L31 variant. Generally speaking, as the displacement of the engine increases, you want more port volume and flow out of your heads. Trick Flow Super 23® 195 cylinder heads for small block Chevy are a direct fit, high performance replacement for factory heads and accept most original accessories. Like others said, you will need a vortec style intake. 69-85 Chevy 350 Engines: 93-97 Chevy 350 Lt1 Engines: 96-02 Chevy Vortec Engines: Call Us for a Free, No Obligation Price-Quote Today! 888-842-0023. 3L Vortec 6. Our Vortec kits are engineered specifically for Iron Vortec & 96 Iron LT1 heads. I want to build a 350 with World Heads, 2. The fix came from GM itself in the intake manifold and injection system it supplied to Mercruiser on the Vortec 305, Vortec 350 and Vortec 377/383(6. Worthless tidbit of information: The vortec's intake port is a direct copy of the LT1 iron head. I decided to try and repair the wiring harness then to fork out $400 for a Painless. HEAD GASKETS. These heads have the swirel inducing combustion chamber and the re-positioned sparkplug like the LT1 heads. Has anyone ever done a Vortec head swap on a 350? you can get SOME vortec heads drilled to fit either six in a row or the TBI/tpi bolt pattern with 2 tilted up. For example, the marine engine uses head gaskets with stainless steel inserts, and brass freeze plugs. The second-generation engine featured aluminum heads, reverse-flow cooling (the heads received coolant first, in lieu of the block), and electronic controls. GM 350 TBI vs. View and Download Edelbrock 2101 installation instructions online. Recommended for street, towing, or street/strip engines from 350-383 cubic inches, operating up to 6000 RPM. To use the Small Block Chevy 350 head on a 400 block, it will be necessary to drill six holes in the cylinder heads. Also worth noting: All LT1 engines left the factory with Mobil 1, the recommended lubricant. LT1 will perform better stock vs stock than a vortec 5. 94" on the LT1 and 2. 475 lift on the cam. An easy way to gain 20-40 horsepower on any 1955 and newer Small-Block Chevrolet V-8 (except later-style LT1/LT4 engines with reverse-flow cooling) is by installing a set of Vortec cylinder heads. Once you’ve found the cylinder heads that are right for you, shipping in the lower 48 is fast. Actually the LT1 exhaust manifolds WILL bolt up to the Vortec heads as long as you drill the outside bolt holes thru the manifold flange to line up with the Vortec head bolt holes & use dowel spacers to get the mounting bolt head further out to clear the CI exhaust tube itself (this is the method I used to mount LT1 manifolds to my Vortec heads). small block GM style crate engine - longblock. 15 lb TBI pressure regulator is a good idea. It displaced 5. Hey i found a pair of vortec heads in for sale for 400 that has been rebuild. Most of the time nowadays these heads are not worth the search and costs to recondition. You would be better off with a pair of Vortec heads. If you don't want to the whole LT1 intake EFI conversion your best bet is to go with vortec heads. I am confused as to what intake to use/buy, the newer vortec heads have 4 mountin ing bolts for the intake, these heads have 6 holes, does it have to have all 6 bolts to mount the intale or can you use just the 4 like the new vortec heads. OHV 16V 5/8 inlet oil pump. 1977 CORVETTE L82 4 speed Daily Driver A/C Vortec heads forged F/I C3 Stingray Super Shifter 3does not fit console real well {but this is a super expensive heavy. CHEV RAM JET 350- New Motor Chev 350 Ram Jet, comes with Cast Vortec heads, muli-point injection, MEFI controller and wiring harness, electronic distributor, harmonic balancer and drive plate. See the “Acid Intake” section. At least the cars did get a roller cam which helped them make the 170hp GM claimed they would make but the trucks don’t even come close. The Vortec Heads come with various intake and exhaust valve sizes to complement the high-velocity port design and your performance needs. As such, the L31 head is compatible with all older. 00" on the LT4. Heads and Cam Install Guide for a 1994 LT-1. LT1 intakes do not have any water crossover passages at all. daniel202010 wrote:i changed my motor to a 350 vortec carbureted. I want to build a 350 with World Heads, 2. The LT1 was cast iron and the LS was aluminum until 2014. For an otherwise stock 350 LT1, 195cc seems to be a good intake port volume. 1 compression and then went with a marine cam to get the power I wanted to move a big heavy boat. Do you modify aluminum intakes? Yes, we do modify aluminum intakes. No, the Vortec heads came out in 87' & they ARE the center bolt headsthey are diff from the LT1 heads, but are the same head used today. the Vortec engines (98-up for the 5. Questions and Answers about old school power plants including Flatheads and Hemis plus the trannies that bolt to them. yeah i can re-do the manifold to get the pre 86 heads to fit no problem. Find out the answer here on HotRod. 1L Performance Parts Want more power and better economy from your Chevy / GM Vortec 8100 8. I figured its a logical choice since 350 vortec heads are all the rage. 7L Vortec (what you have 350 cid) Gen II 5. Plug-and-Play Vortec 350 2. The Vortec Heads come with various intake and exhaust valve sizes to complement the high-velocity port design and your performance needs. 1968 Elcamino with a Vortec 350 crate engine and a 350 turbo tranny. written by Alex Afrashteh. The second-generation engine featured aluminum heads, reverse-flow cooling (the heads received coolant first, in lieu of the block), and electronic controls. Replace your cylinder head on inline 4 cylinder, inline 6 cylinder, V6 and V8 marine engines. If it were me, I'd get the whole package with the Vortec heads and sell your old heads. i had to make a bypass between the inlet and outlet so water would continue to circulate. Dual plane Chevrolet Performance Parts' carbureted LT1 intake manifolds make it possible to take advantage of the advancements found in Generation 2 Chevy engines. If you don't want to the whole LT1 intake EFI conversion your best bet is to go with vortec heads. You can gain an inch or two by removing the plastic engine cover and cutting some of the plastic tabs on top of the Vortec intake manifold. If you are getting all new stuff it is the same for 383 as 350. I found a set of 1992 aluminum LT1 heads that I hope is better (more flow and more compression) than the iron heads I have on my suburban now. Displacement is 5. The heads are different than a gen. 5 version, this came out in 1992, and it was called the LT1 variant, it sported the same 4″ bore as the classic 350. Follow this link for more pics of the 383 LT1 and 305 TPI. If running even a minor cowl hood a Vortec may fit. The Vortec heads reigned supreme in every category except the "amount of work hours to make them flow better" category where the old style heads still rule. GM changed the LT1 head design by revising the water jacket so the new Vortec heads could be used on conventionally cooled small-blocks. 1992 saw the introduction of the LT1 in the Corvette. 450 lift With lifters in great shape $100 Ran 12. Plus if the heads idea is a go for launch, I can test it on my S. The cylinder heads for the Vortec 5. If you're interested in an LSx crate engine, we're happy to help, but here we'll discuss the LT1. 8 L straight-4 in the GM Atlas engine family. The exhaust ports and holes are also in the same location. Displacement is 5. You will also need a Vortec intake. 5-to-1 compression ratio and its direct-injection system is neatly buried in the engine, leaving plenty of room under the hood for other goodies. 60-inch exhaust valves mounted at a 20-degree valve angle. The simple fact that you can take a part from one and put it on another is great. yeah i can re-do the manifold to get the pre 86 heads to fit no problem. PERFORMER VORTEC (IDLE-5500 RPM) Based on the popular and powerful Edelbrock #2101, this dual-plane intake is designed for the street rod, industrial and engine swap market utilizing 262-400 c. You can get alot of the advantage of an LT1 in your earlygen sbc by using the 5. No matter what you're driving, we have the right Chevy 350 Vortec Heads for your automobile. So if you can sort out the egr issue that would be the way to go. heads went into production for the 1992 LT1 Vette. EQ cylinder heads have grown both in acceptance and usage with over 400 racers using EQ heads in multiple IMCA divisions. 1968 Elcamino with a Vortec 350 crate engine and a 350 turbo tranny. oh and the lt1s have angle plugs would that cause a problem. 6 with 64cc heads which makes it streetable. You can get alot of the advantage of an LT1 in your earlygen sbc by using the 5. Suburban 383 Stroker Our performance premium longblock Chevy 383 Stroker Engine puts out a tire-roasting 330 horsepower and 420 ft-lbs of torque!. Ranging in marine power ratings from 260hp for the 305, 300hp for the 350 and 340hp for the 377. I test ran the engine on an engine stand using Ethanol made from a moonshine still. Head gasket Fits cast iron or aluminum heads Used on Ram Jet 350 350 Bare Block (1986 Later Style), 1-Piece Rear main Seal Chevy V-6 90 deg Aluminum Cylinder Head. The 96 and newer junk yard heads are great,but you should find a competent machinist to give them a 3 angle valve job,check the valve springs and maybe put in a set of hd marine style exhaust valves. the water goes from the heads then through the block) so those aren't what you want to use. Ask for '86 to '95 first generation swirl vortec heads upgrade for low and mid range torque. i have an old 350 4bolt block that i plan on building this summer. Our engine dynometer tests have shown a 40HP gain with the new SDPC Vortec TPI base plate and stock Vortec heads versus the stock L98 engine. The new are the best but I give the vortec 350's aot of credit. This is a discussion on vortec heads on a 305 within the Classic Muscle forums, part of the Vehicle Specific category; my buddy is throwin together a 305 probly gonna be bored. 69-85 Chevy 350 Engines: 93-97 Chevy 350 Lt1 Engines: 96-02 Chevy Vortec Engines: Call Us for a Free, No Obligation Price-Quote Today! 888-842-0023. Shown below is a cross section comparison of the LT1 (photo A) and the LT4 (photo B) heads. Will vortec heads of a 350 fit onto a pre-1994 block? == == Putting 1999 Vortec onto 1984 engine? it will work I have vortec heads on a 72 400 small block, I had to get the heads reworked for the. The Camaro and Corvette received aluminum cylinder heads, which helped increase performance. LT1 vs LS1: Cylinder Block. 00" on the LT4. Let me clarify. CLICK TO CALL. If you don't want to the whole LT1 intake EFI conversion your best bet is to go with vortec heads. It is an all-iron engine (block and heads) with two valves per cylinder. 1L engine? Our aluminum cylinder head, camshaft and modified intake manifold top end kits are a great place to start. Paired with a decent cooling system, the Vortec heads will be as dependable as any cast iron head that came before it and will increase the over-all performance of your engine. 7L vortec heads.