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89 Posts
Hey all,
My '94 K1500 needs it's engine replaced. It's a wheezy 350 TBI with the lousy factory cam. No guts, hardly making any torque, especially with 3.73 gears, and 35" tires and a 6" lift. I have a Vortec 350 four bolt main one piece crank block with 1.94/1.60 iron Vortec heads, and need a maximum high and flat torque curve, up to 4500-5000 RPM, and no interest in going beyond this RPM. It's an 880 block, so I can't go 383; the cylinders are shortened by 3/8" on these blocks, and I know I will be asking for trouble with a stroker crank and the pistons sticking too far out the bottom. SO, I want to go TPI, with the large bore Vortec base manifold ($400), enlarged SLP runners ($300), a ported 58mm TPI plenum ($140), TPI harness, TPI ECM with a torque program probably from PCM for less, bigger injectors, fuel rails, etc. 0.030" over flat top pistons with +/- 10:1 CR ($250), forged floater 6" rods ($150), Vortec heads machined for max lift, new electro-polished springs, new stainless steel valves, 1.6:1 roller tips, and required machine work. The crank needs nothing. I have read some online articles, and some folks ended up with way over 400 lb.ft of torque with the right cam and a similar set up with 6" rods. I want to be at 425 to 450 lb/ft. at the crank and that should move this beast pretty well. If I can get even more lb/ft, that would be optimal! If anyone could recommend any tips in acheiving this goal, I would be appreciative.:usa:
My '94 K1500 needs it's engine replaced. It's a wheezy 350 TBI with the lousy factory cam. No guts, hardly making any torque, especially with 3.73 gears, and 35" tires and a 6" lift. I have a Vortec 350 four bolt main one piece crank block with 1.94/1.60 iron Vortec heads, and need a maximum high and flat torque curve, up to 4500-5000 RPM, and no interest in going beyond this RPM. It's an 880 block, so I can't go 383; the cylinders are shortened by 3/8" on these blocks, and I know I will be asking for trouble with a stroker crank and the pistons sticking too far out the bottom. SO, I want to go TPI, with the large bore Vortec base manifold ($400), enlarged SLP runners ($300), a ported 58mm TPI plenum ($140), TPI harness, TPI ECM with a torque program probably from PCM for less, bigger injectors, fuel rails, etc. 0.030" over flat top pistons with +/- 10:1 CR ($250), forged floater 6" rods ($150), Vortec heads machined for max lift, new electro-polished springs, new stainless steel valves, 1.6:1 roller tips, and required machine work. The crank needs nothing. I have read some online articles, and some folks ended up with way over 400 lb.ft of torque with the right cam and a similar set up with 6" rods. I want to be at 425 to 450 lb/ft. at the crank and that should move this beast pretty well. If I can get even more lb/ft, that would be optimal! If anyone could recommend any tips in acheiving this goal, I would be appreciative.:usa: