L31 vortec heads

The Vortec 5700 L31 (VIN code "R") is a 5.7L V8 truck engine. It is Chevrolet's last production first-generation small-block. The cylinder heads feature combustion chambers and intake ports very similar to those of the LT1 V8, but lacking the LT1's reverse-flow cooling and higher compression.

Jul 25, 2014 · The L31 Vortec block usually don't require as much clearancing as do older blocks. Employing 6 inch rods that use cap screws rather than bolts and nuts to retain the big end cap greatly reduces the clearance problems with the block and the cam. The L31 heads bolt on with no problems the overbore is only .030 inch which is well inside their ... The 350 HO engine has production Vortec cast iron cylinder heads. These cylinder heads were first used on 1996 trucks with fuel injection, RPO L31. The intake and exhaust ports are very similar to the 1992-1995 Corvette 350 LT1 heads. The heads include 1.94” intake valves and 1.50” exhaust valves with pressed-in 3/8” studs.Feb 3, 2022 · The L31 GM Vortec heads just weren't simply upgrades to existing heads, and these were a total reinvention based on the 1996 Caprice/Impala SS LT1 cast-iron head castings. The most significant change in the redesign was a revision to the water jacket, effectively allowing the Vortec heads' use on customarily cooled small blocks. The 1996-2000 350ci Vortec 5700 engines enjoy lots of aftermarket support to help improve the 255 hp and 330 lb-ft of torque they're rated for at the crank. An …For stock power production, the hot ticket is the L31, Vortec-headed 350 offered from 1996-'02 in truck, van, and SUV applications. ... Even sporting the Vortec heads and a good intake and ...SMALL-BLOCK VORTEC CYLINDER HEADS. 12558060. CAST-IRON VORTEC CYLINDER HEAD ASSEMBLY. Completely assembled with 1.940"/1.500" valves. Uses …

Chevrolet Performance Valve Stem Seal ZZ4, Fast Burn 385, L98, LT4, L30, L31 Vortec heads. $3.91. $2.68 (You save $1.23) SKU: 10212810 Weight: 0.10 LBS Availability: Y Shipping: Calculated at checkout : …The only truly relevent info I found on Vortec heads is from this thread, along with snippets from guys allegedly running Vortec heads that posted in the various threads on building 383s that I sifted through: Vortec Head Swap thread on PBB At least you can tell I searched. :flipoff2: Evan Oh, here's a decent current thread on building a 383:Mar 23, 2021 ... Whats the difference between 305 vortec heads and 350 vortecs? This video should answer your questions and give you some real flow numbers ...11400 posts · Joined 2002. #4 · Feb 9, 2007. I don`t know what they flow. However, years ago I built a 305 roller engine with 305 vortec heads. The pistons were basic flat tops .030 over, the cam was a GM grind, was rather mild around 204 duration, Double roller timing chain, edelbrock intake, Q-jet carb, stock exhaust manifolds, single ...This camshaft is a great upgrade for 1996-2000 Chevy/GMC trucks equipped with the L31 Vortec 350 Engine. This cam is great for additional bottom end torque. If installed in one of these trucks, a custom computer re-program is needed. ... Will this work on a SBC 350 L31 block with Vortec heads and a Pro Flo 4 EFI system? Asked by: …Exploding head syndrome refers to hearing a loud noise when falling asleep or waking up. Learn about other symptoms, causes, and how to treat. Despite its dramatic name, exploding ...This camshaft is a great upgrade for 1996-2000 Chevy/GMC trucks equipped with the L31 Vortec 350 Engine. This cam is great for additional bottom end torque. If installed in one of these trucks, a custom computer re-program is needed. ... Will this work on a SBC 350 L31 block with Vortec heads and a Pro Flo 4 EFI system? Asked by: …We engineered this kit with all the right parts so Vortec head owners won't have to machine the spring seats or valve guides to run up to .550" lift.. Yes, works with self aligning rockers as well as heads w/ screw in studs and guide plates and std, non self aligning rockers. As many know, Vortec heads have a problem w/ retainer to seal clearance.

General Motors Vortec line of V-6 engines commonly suffer from problems with excessive oil consumption and engine knocking. Knocking problems are particularly prevalent in Vortec e...L31 Vortec Conversion to Carb. Jump to Latest Follow ... With L31 heads, I would start at 34 degrees initial + mechanical, all in by 2800. More cam will want more initial ignition timing, so increase the initial and limit the mechanical to get to your 34. Once the motor is running, you can try rocking the timing back and forth a couple of ...The only van that had Vortec heads along with TBI were the 3500(1 ton) vans(. They had an L31/roller cam/vortec heads engine with TBI injectors. The intake these vans used is where the GMPP TBI/Vortec head conversion intake came from. 2. Vortec 5700 hp ratings seem to be 255 to 350. Is there anyway of finding out what this is without dynoing it?Thats right! You can run .550+ lift on a stock Vortec guide and Stock valves! No machine work. Lots of info in this video! Please watch the whole video for a...

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In the 1 ton 1996 vans, there was an available engine that used a Vortec 350 L31 longblock with Vortec heads, but had a TBI injection unit and special TBI/Vortec intake manifold. The L31 350 was also available in the 3/4ton and 1 ton vehicles from 1996-2000 and if the GVRW was above 8600lbs the L31 got 4 bolt vertical iron main caps on the ...The L31 Vortec block usually don't require as much clearancing as do older blocks. Employing 6 inch rods that use cap screws rather than bolts and nuts to retain the big end cap greatly reduces the clearance problems with the block and the cam. The L31 heads bolt on with no problems the overbore is only .030 inch which is well inside their ...Re: maximum you can mill Vortec heads. by DaveMcLain » Thu Jan 13, 2011 1:31 pm. When you angle mill the head you will take just about all of the material off of the exhaust side where the chamber is wide and deep and nearly none at all off of the quench areas where it doesn't help to reduce the chamber volume anyway.It's the highest lift most aggressive cam you can get for the GEN 1-E Vortec 350 rpo L31 that will work with the OEM valve springs and L31 cylinder heads. Basically a 4 bolt Vortec 350 with a roller cam. 357 HP @5500 RPM. 407 LB-FT @4000 RPM. Camshaft Type (P/N 12677151): Hydraulic roller. Camshaft Lift (in): 0.473" intake / 0.473" exhaust. 12558060. CAST-IRON VORTEC CYLINDER HEAD ASSEMBLY. Completely assembled with 1.940"/1.500" valves. Uses bare head P/N 12529093. 64-cc combustion chamber. Straight spark plugs. No heat risers. Requires Vortec-specific intake manifold. Camshafts with more than 0.475" lift require machining valve guide bosses and checking valve seal to valve ...

Heads-up displays (transparent displays that let drivers see data without looking down) are built-in on some modern luxury cars, but if you're not lucky enough to have one, here's ...Ramjet intake swap on stock 350 vortec L31. So I picked up a complete Ramjet intake manifold and also included was the Mpfi 4 ecu and harness that the ramjet crate engine uses. Currently running a dual plane gm perf intake and a sniper efi with hei and pulls really good. Want to swap the ramjet intake for looks and more power hopefully.The 95/96 models can be a bit trickey when it comes to the true L-31. A 1996 should be pure Vortec L-31, that's an 880 block with Vortec heads and that funky central port sequential fuel injection with a roller cam. Oh yeah, a plastic timing case cover. The 95 engines are often not as simple, the 880 Vortec block was fed into production first.Edelbrock part #7516 RPM Air-Gap intake manifold is based on the powerful Performer RPM Vortec #7116. This single four-barrel intake is designed for 262-400 c.i.d. Chevy V8's with 1996 and later Vortec (L31) cast iron or Edelbrock E-Tec aluminum heads. The air-gap design features an open air space that separates the runners from the hot engine ...The 1996-2000 350ci Vortec 5700 engines enjoy lots of aftermarket support to help improve the 255 hp and 330 lb-ft of torque they're rated for at the crank. An engine swap can be quite costly, so ...For stock power production, the hot ticket is the L31, Vortec-headed 350 offered from 1996-'02 in truck, van, and SUV applications. ... Even sporting the Vortec heads and a good intake and ...The Vortec 5700 L31 (VIN code "R") is a 5.7L V8 truck engine. It is Chevrolet's last production first-generation small-block. The cylinder heads feature combustion …A few years ago I ordered new GM Vortec heads from Summit. I pulled all the springs off, pulled all the studs out, did a pocket port job an cleaned up the ports of casting flash, install screw in studs an replaced the springs with Crane spring & retainer kit p/n 10309-1. Reused all the valves, keepers, seals.The new single plane intake manifold is designed to provide a broad RPM powerband for high-performance street/strip engine applications to a maximum engine speed of 7500 RPM. The carburetor-mounting pad is designed to accept all stock or aftermarket square-bore carburetors with manual or electric chokes. These intake manifolds are designed to …L31 Engine swap. Just thought I would post an update on my engine swap for anyone thinking of doing the same. I am pulling out a '75 350 for a '96-'00 L31 crate engine. Some benefits are the vortec heads, roller cam and the one piece rear main seal. For me, it also has future upgrade potential.The L31 Vortec cylinder heads represented a major design change in Gen I SBC heads. They could be used on any SBC block from 1955 through the end of the Vortec engine production because the mounting holes lined up properly and the water passages were the same as the cylinder heads from the past 40 years. Oddly enough, …

bobbyv Discussion starter. 49 posts · Joined 2004. #1 · Aug 23, 2010. I've got a 99 Suburban with the L31 5.7 vortec engine. These motors seem to really stop breathing after 4k RPMs. What's really holding them back? Vortec heads are known for good flow and after opening up the EFI intake, it seems to me that it should flow to 5500 …

The heads you linked are the Summit brand Vortec.They are not a true L31 head,but,more of a replacement head.The Vortecs from SDPC are true Vortec L31 cylinder heads.IDK for sure on the stock sets,but,sets modified sets will have verified intake runner volume & chamber volume in cc's with each set of heads.The runners usually come in …Head gasket repairs can be expensive, but the cost can vary significantly depending on the cause of the issue and the type of repair needed. Knowing what factors impact the cost of...The 1996-2000 350ci Vortec 5700 engines enjoy lots of aftermarket support to help improve the 255 hp and 330 lb-ft of torque they're rated for at the crank. An engine swap can be quite costly, so ...Order the L31 Chevy Vortec 350ci/5.71 replacement engine from JEGS High Performance! Free Shipping over $199* Same Day Shipping before 10pm* Price Match Guarantee; Free Shipping over $199* Same Day Shipping before 10pm* ... JEGS 83201 - Intake Manifold Bolts for 1996-2002 Small Block Chevy w/5.7L L31 Vortec Heads …The Vortec iron small-block Chevy head offer 1.94/1.60-inch vales and 64cc combustion chambers and flow better than any other production iron small-block Chevy head. Their limitation is a limited valve lift potential. Machining the guides to increase the retainer-to-seal clearance is an inexpensive way to convert these heads to use a bigger …Re: l31 vortec heads. The biggest advantages of the aluminum E-tec 170's is the ability to handle a high-lift cam and the weight savings. The stock vortecs can only take about .450" lift. For a street smallblock, the E-tec 170 is a great choice. [FONT=&quot]“A society that puts equality before freedom will get neither.JEGS 513036 - Cool Gap Intake Manifold for Small Block Chevy with 1996-2002 Vortec L31 Cast Iron Heads, Dual Plane [Satin] (13) $197.99. JEGS 513071 - Intake Manifold for 1996-2002 Small Block Chevy 350 Vortec, Hi-Rise Single Plane [Satin] (1) $238.13. JEGS 513001 - Intake Manifold for 1955-1986 Small Block Chevy 262-400, …

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May 27, 2014 · 97 L31 Vortec engine, stock bottom end 9.6 Compression ( .015 head gaskets for .039 squish ) SCR about 7.87 Comp xr264hr cam Weiand 8121 intake Edlebrock 750 carb HEI ignition Hooker 1 5/8" full length headers 2000 stall converter th350 trans 3.73 posi rear end 3000# vehicle I have changed the springs and retainers on the L31 heads to allow for ... L31 Vortec SBC, We were doing the top end only but we decided. to go with a full rebuild. We already have some parts for it. 1 - 0912 AFR Heads. 2 - LT4 Hotcam. 3 - 1.6 Crane Cams Gold Race roller rockers. 4 - 3600 Yank Torque Converter. We already have 1 5/8 headers and other goodies. as the Taylor intake spacer.From 1996 to 2000, GM truck and van 350 engines came equipped with L-31 Vortec cylinder heads. Built of cast iron, these powerhouse heads upped the …For stock power production, the hot ticket is the L31, Vortec-headed 350 offered from 1996-'02 in truck, van, and SUV applications. In addition to the impressive …JEGS crate engines feature a 36 month/unlimited mileage warranty.This engine was designed as a direct replacement for 1996-2000 Chevy & GMC pickups, SUV's, and van applications. These vehicles introduced the L31 5.7L small block featuring Vortec cylinder heads that were developed for maximum power and efficiency.L. lmsport. 5074 posts · Joined 2004. #2 · Oct 18, 2016. the studs are not threaded on the portion that is pressed into the head casting, they are a 3/8 diameter straight shank. to install threaded studs requires pulling out the existing studs, tapping the hole to 7/16-14, and usually milling down the casting comprising the stud boss to ...bobbyv Discussion starter. 49 posts · Joined 2004. #1 · Aug 23, 2010. I've got a 99 Suburban with the L31 5.7 vortec engine. These motors seem to really stop breathing after 4k RPMs. What's really holding them back? Vortec heads are known for good flow and after opening up the EFI intake, it seems to me that it should flow to 5500 …Vortec design combustion chamber. Vortec style intake manifold bolt pattern. Angle or Straight plug design. Raised intake roof for enhanced air flow. Extra thick deck surface. …JEGS 513036 - Cool Gap Intake Manifold for Small Block Chevy with 1996-2002 Vortec L31 Cast Iron Heads, Dual Plane [Satin] $219.99. JEGS 72352 - Fuel Stabilizer [4 oz. Bottle] $4.91. PRW 0835019 - Self-Aligning Sportsman Series Steel Rocker Arms 1955-86 Small Block Chevy 262-400. $155.94.The L31 Vortec block usually don't require as much clearancing as do older blocks. Employing 6 inch rods that use cap screws rather than bolts and nuts to retain the big end cap greatly reduces the clearance problems with the block and the cam. The L31 heads bolt on with no problems the overbore is only .030 inch which is well inside their ...Thats right! You can run .550+ lift on a stock Vortec guide and Stock valves! No machine work. Lots of info in this video! Please watch the whole video for a...What are the casting numbers for the L31 vortec heads? Ive seen 906 and 062 castings but I dont know which is the L31. Also, what vehicles were these heads put on from the factory? ….

Chevrolet Performance 19432779 - GM Replacement Small Block Chevy Crate Engine [1996-2002 L31 HD Vortec 350 ci/5.7L V8] (0) $6,713.99. Get the Best Performance with Chevrolet Performance 5.7L/350ci L31 Long Block Crate Engine with Vortec Heads for GM Trucks/Vans 12681431 parts at JEGS. Shop Now at the Guaranteed Lowest Price!Modifying Vortec Heads For 0.525-Inch Valve Lift ... Chevy introduced its Vortec cylinder head on the L31 truck engine and it didn't take long for enthusiasts to bolt them on their engines and ...Aug 6, 2018 · JEGS 513002 - Intake Manifold for 1996-2002 Small Block Chevy 350 Vortec with L31 Cast Iron Heads, Dual Plane [Satin] $161.99 JEGS 601210 - Flexplate Bolts Chevy 90-Degree V6, 265-454 V8 with 2-Piece Rear Seal, & Ford 289-460 V8 [High Strength] The specifications of the GM 4.8 liter V8 Vortec L20 small block engine include a displacement of approximately 4807 cubic centimeters and a compression ratio of 8.8 to one. It use...97 L31 Vortec build. Jump to Latest Follow ... Finally, flat top pistons with Vortec heads will be around 10:1 compression -- more if you get quench height down to a reasonable number, like .040" after decking heads and/or block. Save Share. Like. S. S_Premo22 Discussion starterIf your budget is tight, I’d suggest a set of affordable iron Vortec heads. These heads flow much better than almost any production Chevy head. ... I’m looking to upgrade the cam in my stock L31 vortec SBC. The stock iron heads have been ported and flow EXhaust 51, 96, 137, 155, 164, 169 Intake 62, 134, 189, 224, 232, 236 chambers …The Elgin/Pioneer RV1943X valve springs will not fit the L31 Vortec heads. The RV1943X valve srings are 1.250" O.D. x .869" I.D. w/damper. (Remove the damper and the springs are 0.883" I.D.) The L31 Vortec truck/RV heads have a valve guide boss which serves as a spring register and must be machined to fit the RV1943X valve springs.Dec 22, 2008 · When the Vortec heads were released in '96 (onL31-equipped pickups), it didn't take a brain surgeon to figure out they were an easy 25-30hp bolt-on. As Nicky told us, "The ports and the combustion ... Ramjet intake swap on stock 350 vortec L31. So I picked up a complete Ramjet intake manifold and also included was the Mpfi 4 ecu and harness that the ramjet crate engine uses. Currently running a dual plane gm perf intake and a sniper efi with hei and pulls really good. Want to swap the ramjet intake for looks and more power hopefully. L31 vortec heads, [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1]