in the tpi runners and plenum between ta and camaro as well as through the years........? weren't they all the same. someone keeps trying to tell me the aren't and i'd like someone else's opinion

 

All TPI units of similar years are the same regardless of model. 88 and earlier had 9th injector (cold start).

 

thanks, that's what i thought!

 

90 to 92 plenums have the passenger side drilled and taped for the map sensor, 89 and older do not have this done to them.

 

thank you.........now that was something i over looked.

is there anything else?

 

The fins on top of the plenums changed***I believe*** in 1989.

Prior to '89 they extended farther on the top of the plenum. In 1989 (I think thats the year) through 1992 used fins that were about half the length of the earlier versions.

jms

 

minor differences, however different enough to make sure you get the right ones for your year of engine/car..

 

are you guys absolutely sure............the ones i have sitting in front of me look to be off of a 92, yet they look identical in everyway cosmetically to my 91?