WebMar 2, 2006 · * 25534431 Cast-iron head intake ports are 215cc, exhausts are 84cc, and combustion chambers are 65cc. Casting number is 25534371C. * 25534371 Bare head, same as above, but no springs or valves.... http://crateenginesupplies.com/l31-crate-engine-hp-with-carb-and-headers/
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WebExhaust Header and Manifold Gaskets, Square Port, Graphite, Designed for L31 Vortec Style Cylinder Heads, Chevy, Small Block, Pair Part Number: RFL-2011 ( 14 ) Estimated Ship Date: Today $29.99 Add To Cart Compare Wish List Remflex … WebFeb 17, 2007 · My Marine intake is on a stock longblock 1997 L31 Vortec 350 with Hooker longtubes, modified K&N FIPK, dual 2 1/2" sideexitting exhaust on a 1997 reg cab shortbox that weighs 4000 lbs witha 1999 4l60e with an S10 L35 torque converter. My best pre Marine conversion 1/4 mile time was 14.8 at 94 mph, this was without the 2500 rpm S10 … kentucky 62a500 fill in form 2022
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WebJun 21, 2014 · There have been several threads here on this, mostly talking about the Ram Jet 350 engine, which is essentially a Vortec L31 with the Ram Jet EFI installed on it. If you don't have a bypass you'll have cooling system problems especially on warmup. Click to expand... I had never heard this until now. wesmigletz Registered Joined Sep 23, 2012 WebPerformance headers provide that using nothing but proper engineering and good materials. Performance headers use accurately shaped and sized tubes and collector synchronizing the pressure impulses from different cylinders so they don’t interfere with each other. WebMar 3, 2016 · L31 is 190/195 degrees at .050 .414/.428 lift with 1.5 arm LSA 111 degrees LT1 is 201/208 degrees at .050 .447/.459 lift with 1.5 arm LSA 117 this is hotter than the L31 cam but the wide LSA keeps idle vacuum high making this cam very computer friendly with an idle that is milder sounding than the cam timing would make you think. kentucky 4th district