Dec 31, 2016 · I just built a new vortec headed 350 gen I block. Compression is 10.3:1. It has keith black flat top pistons, an isky 270 cam that has an 108 degree lobe separation. It also has a new air gap intake m … read more
If you are still running the singl cat Vortec 305 exhaust, swapping to the dual cat Vortec 350 or custom 2 1/2" headpipe setup along with headers is worth over 30hp. A good cam for you woudl be a stock LT4 cam from a 1996 Corvette GrandSport with the LT4 cam.
350 Vortec Marine Engine Remanufactured 5.7L, 350 CID Vortec marine engine. Used in marine and industrial engine applications between the years 1997-2015. This engine is the Vortec engine using an electric fuel pump, 8 bolt intake manifold, and roller camshaft and lifters. Reman 5.7L/350, 330HP Vortec Marine Base Engine.
Notes: For pre-1996 LT1 and L98 engines the dowel pin in the end of the camshaft must be pushed in so extension from end of cam is between 0.290 in. and 0.310 in. For 1996 LT1 and LT4 engines, the dowel pin is in the correct position extending 0.620 in. from the end of the camshaft. This cam has a fuel pump lobe.