L31 vortec specs
Aug 23, 2010 Vortec heads are known for good flow and after opening up the EFI intake, it seems to me that it should flow to 5500 RPMs. I'm getting ready to rebuild this engine and keep the factory EFI as it's the family hauler.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. L31 Vortecs comes in two different casting numbers, (# 906) or (# 062). Originally, the stock# 906 casting head was available in two versions. l31 vortec specs
Jan 24, 2007 First off, this is for a truck. I've got a friends '97 Silverado in my driveway with a blown head gasket, it's got the L31 Vortec engine. We've got all of the accessories, brackets, and wiring out of the way, tomorrow the heads are coming off and going to
New 350 HD Vortec Chevrolet crate engine with GM warranty with free shipping from SDPC. Complete long block with new Vortec heads, oil pan, oil pump and more. GM Engines Vortec HD 350 L31 New Crate Engine Free Shipping on Your Genuine Jun 28, 2012 this is an old thread, but I've never heard of a 350hp factory L31. unless they're refering to some special crate or replacement motor or police edition or something, I would question their data. all factory L31's that I'm aware of from were rated at 255hp330ftlbs.l31 vortec specs Chevrolet Performance 350 c. i. d. L31R long block assemblies are built up from 4bolt main blocks with onepiece rear main seals. To this, Chevrolet adds a nodulariron crankshaft, powderedmetal connecting rods, and hypereutectic aluminum pistons.