What does it take to convert a 305 TBI into a 305 TPI?

Besides replacing the intake mainfold?

 

go to the tech articles section, there is a complete listing of all the parts you need and what you have to do, or run a search

 

Your best bet would be to go to a yard or look around online and find a complete setup, preferably one of the newer SD systems, although the older mafs work better unmolested. Youll need teh entire intake plenum (lower, upper, tb, and runners), ECM, wire harness, cables, airbox, high pressure fuel pump, and lots of misc. stuff like gaskets and such. Make sure you get as much as possible off the doner car or youll be nickeled and dimed to death. One word of caution: youll want to switch your cam to either one for an LB9 or similar TPI specific cam. TPIs make torque only in the mid range and have thier peak around 3600 RPM and need a matching cam that places the engines peak torque in the same reagion. Not a bad idea to get a good set of heads with realativly small runners to boot. If you stick it on your stock L03, the gains will be minimal and the tpi will be somewhat mismatched as teh L03 has a puny low-revving cam.

 

Do a search. Trust me when I say your not the first person to ask that question. I bet if you check out the TPI board as well there should be something on that...

Bruce (90RS305)

 

This should get you started

TBI to TPI conversion