I have an 87 TPI set up I'm putting on a 91 350 out of a Formula 350. I know that the 91 was SD, but the difference is in the intake only right. As long as I use a MAF prom, I should be fine right? I know I need bigger injectors and a prom but other than that everything is good.

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87 Z28 305 TPI, Auto, LT-1 cam (@.50 418/430, 194/199, LSA 111), roller timing set, 2.73, Gutted air boxes, K & N fillters, Dyno Max 3" cat back, 8.8 mm spirals, air foil, BFG Drag radials, and 170* Stat.
Old Best 15.414 @ 87.47.
new best 15.006 @ 89.55.
w/ drag radails 14.72 @ 92.1

“Fallen But Not Forgotten”

 

ttt

 

nope, the wiring harness will be different. Either get one from a MAF car or have yours modified to use MAF.

 

The computer is totally different too.

 

What I'm asking is the block doesnt matter the Speed Density is in the intake componets only right? So as long as I get a chip for a 87 350 I should be fine.

 

I think you need to clarify your question a little. But, assuming that you are putting a 91 block and heads and maybe intake under an 87 electronics/wiring package, it will work out just fine. Its not absolutely necessary to change other stuff, but if you do you should change it all at the same time, like the prom, knock sensor, esc, and injectors.

 

I have the 87 intake MAF, plenum, runners, intake, computer, and wiring harness that runs my LB9 right now. I am buying a 350 long block out of a 91 formula 350. Long block = no intake, only heads and water pump (which will have to go to accomidate V-belt instead of serpiten (sp?)). I will ungrade injectors to maybe 24's that should support 400 to 450 HP right? As for a chip I'm starting to research burning my own.

 

What you are planning is fine. If you are gonna burn your own chip, you dont need another prom, just use yours.

 

Cool I though so, just wasnt completly sure.