Hello.
I have read this forum for a some while and would like to make a post.
Lets start from beginning I am from Europe - Latvia, little country near Russia.
I'm driving 91 RS 305TBI. I'm sick off fu*king with ECM so I'm planing to build 350 carb. In my 305TBi previous owner have made some improvements like compcam 08-302-8 and 1,5 long pipe headers
I want to take this stuff from 305 put it in 350, add procomp intake 22030 + holley 0-80670 off course hei distributor and run like a champ also there will be exhaust modification from headers I'm planing to run one 2,5'' then 3'' and in end dual exhaust from one pipe.

My question is what can i expect from car, what HP?

 

Some one?

 

What is the ECM doing that is giving you fits?



The heads from the 305 will not play nice with the 350, it will push your compression way high. I would look at AFR , Brodix, World or Trickflow heads. They will all bolt right on. IF you are on a budget, I would For headers, i'd then look at some L98 Vette heads or Vortec heads. With Vortec heads you'll need a vortec intake and slef aligning rocker arms.

I'd look at Dyno-don's and you don't need anything more than a 2.5" dual or 3" single.

As for HP, until you put it on a dyno, you never really know.

I have a 350 roller block, world sportsman II heads, Lunati 60121 cam, Edelbrock Performer intake and the factory Computer controlled Carb. I recently dyno'd at 261hp at the wheels which is about 310 brake horse power from the motor.