i got this gta with the tpi 305 and i have a 350 long block. i was just going to pull the engine and use the 305 tpi setup on the 350 and stuff it back in. my question is with the computer, can i just buy a comp out of a 350 tpi car? i know it wont run right with the 305 comp in there. any advise?

 

The ECM for a 305 TPI and a 350 TPI are the same (assuming they are the same year). It's the PROM that's different. You will need fuel injectors for a 350, and a 350 PROM, that's it.

 

Go your local Chevy Dealer and buy a 350 TPI Prom (chip) for your Model year car. Cost about $60, this will get you up and running without spending money for a custom chip.

 

What about the Knock Sensor?

 

You need a one for an L98. Also I am not positive on this but I think the ignition modules are different.

 

sounds good. i dont know a lot about the tpi cars, im a carbed man i see all these pictures of people taking the emo stuff off and id also like to do all that. i thought that stuff would effect the computer though.

 

Read more about the 305 TPI to a 350 swap. You may need a few other items besides the chip. Did the same swap.

 

I am doing the same swap right now, The only problem I have ran into is the fact that I stepped up to #30 injectors. Is your TPI setup MAF or MAP sensor? What year? The reason I ask this is 'cause everything I have found shows that MAF will handle about a 10% increase in displacement without problems. I have MAF & will have to have a chip burned