Quote:
Originally Posted by kevinr1970
Originally Posted by jb1016 View Post
...I'm wanting to go to Vortec heads and modify my factory TBI. (The GMPP intake really is pricey; I'd probably do a carb intake with an TB adapter.)
Is this a realistic option?
For my '87 crew (TBI) the engine is very tired (166k); it shows about 40psi at start up, but is around 0 after I get it warmed up. I am sure the gauge is off or it would be making some serious noise, but it smokes on start up (blue) and I think I can see blue smoke when I get on it.
The 3.73's with a T400 and 275/60-15's aren't helping either when I insist on going 70mph on the freeway.
I have a low mile 350 in my garage and I had planned on putting that engine in my '87 with a EGR Edelbrock Performer manifold with a TBI adapter. If the Vortec heads are that much better it might be worth the work you described above?
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its definitely a realistic option. its only as difficult as a head swap and and intake swap. the thing with the vortec heads is they flow GREAT at low lift. so you dont need a high lift cam to get decent power out of it. the L31 ( the vortec headed truck engine) made as much as 230hp/330tq with a small lift cam. theyre a 64cc head, so you need to make sure the pistons you use/have wont push the compression ratio up to high.