ok i have a 1991 camaro rs 305 tbi with a clean title and i have a 1987 iroc z z28 305 tpi with no title im putting he whole drive train of the 87 in the 91 the engine trany and rear end so what i need to know is should i / can i just take the wiring and ecm from the 87 and put it in the 91 rs

 

not just a plug and play. There's a bit different in the dash harness to the engine harness. U need to swap fuel pumps. Fuel lines at least line up.

 

ok i have the whole iroc to pull from there is just no title on it and it only has 71k miles! but i am i can crank the iroc right now btw but the passager side was crushed but can drive it around lol
and what if i jst take the whole dash outta the iroc as well lolxD

 

Eh, prolly easier to just move the 5 wires required. I myself went to an 89 iroc drive train to replace my dying TBI set up. Most of it is the same. They moves fan control( alternator power) from one connector to the next. I used my electric speedo that was existing but had to wire it in. It really isn't a hard swap, just not very popular. Its easier to just rewire Ur TBI harness to use a '730 ecm' and speed density.

 

yea im getting a speed density harness and just running that though it but i also found a 91 z28 ecm for the 305 tpi for $80
btw how does the 305 tpi run i know my bro had a tpi 350 in a formula and it was nasty! loved it

 

Eh? The TBI I had prior had the ultimate mods, great exhaust, headers. It pulled harder and got better mpg. The tpi I swapped had lower miles but had a peanut cam then the injectors failed and I'm still tracing a random miss. Pulls harder from 65-125 mph tho. Im now swapping to the tpi obd2 with a 355. Overall, worth it. I've ditched the headers due to leak and since added the np10 dual cat option.felt the biggest loss there.



I did swap to the Bosch 3 injectors when my stockers failed.

 

would this be a good cam for this 305 wanna do the inside work while i have it out

 

What cam? Lol. Cam choice isn't my specialty. That's prolly why I put a tame cam in my 355. Lol

 

http://www.summitracing.com/parts/hr...make/chevrolet

my bad lol

 

Your best bet on cam choice would be to ask the gurus on this page. Potentially a new thread. If it says its not computer compatible then it may not be a good fit. It is similar to the one I'll be using in my 355. Our stock heads don't accept that much lift iirc.