Thanks for time guys and info Eric 70scamaroman 70scamaroman Veteran Member posted January 18, 2005 04:59 PM Sorry forget to mention that the vortec heads are L31 64cc. and …

Dec 10, 2013 · - the factory L31 PCM is limited to 5800 rpms, can't tune it easily, and the intake manifold/fuel delivery system is limited for my use. - the marine intake manifold has mpfi, plus …

Presently have the L31 o62 heads with no porting and a Professional product air gap stlye intake.I am running 12.90 @105,106 mph , full load car.I checked the flows on the vortecs and dont …

Feb 28, 2016 · Just bought a 99 2500 Burb, L31, 4L80, 9.5 14 bolt 4.10 gears. 195,000. I paid a good price, but there was a reason; she needs a ton of work. Once back in shape she's going …

Sep 14, 2012 · Chevy Small Block - Engine Block Casting Numbers Notes (for below): "High Power" is the maximum rate HP this block was used for, "Low Power" is the lowest rated …

Nov 5, 2014 · Same problem after changing ignition wires 1999 l31 k1500 5.7 v8 p0301 p0302 p0300 but never all together and only after hitting 40mph

Jan 21, 2023 · Veteran Member Gold Member Dec 7, 2014 5,495 Canada sandlapper said: I've come to understand the final iteration of the classic sbc (iron head Vortec 5.0L / 305ci rpo L30 …

Dec 18, 2008 · It is a stroked (by 9 mm) version of the Vortec 4800 and replaced the 5700 L31. L59 denoted a flexible fuel version, while the LM7 was the standard version of the engine.

So the LO5 turned into a L31 vortec 350. And I'll probably run a carb on it for a while, with the option of injecting the car with the original TBI system later. (original plan for the engine): …

May 11, 2018 · The New Plan: Square Body L31 Vortec 350 Swap Since the funds for the LS engine were coming from the sale of the Suburban I was faced with only 1 option. Pull the …