ok. im new to this board, I dont own a 3rd gen, I got a 77 Camaro, but i do have a engine from a 87 trans am in it. Thats where im confused.. I'm told that it came from a 87 trans am and its a 350 HO yet it looks like a chevy 350, the HO part i dunno about. anyways.. i dont understand this because I cant find any reference of a 350 chev. HO being in a 87 trans am.. do any of you know if thats the case or if this engine isnt even orginal from that trans am? and another thing.. there is a hose on the intake behind the carb that has a line coming off of it thats plugged.. just wonderin what it is for? any help would be great guys!

 

Welcome Aboard!

An '87 Trans Am would have had one of three engines:

305 Chevrolet SBC, E4ME QuadraJet carbureted;
305 Chevrolet SBC, TPI fuel injected;
350 Chevrolet SBC, TPI fuel injected.

If it came stock with a carb, it's not likely a 350. In any case, it's a Chevy.

 

the only engines actually designated as HO from the factory were the l69 305's AFAIK......

 

well i ran the numbers off my carb, my research says that the carb is a marine application quadrajet from 1980.. where would the engine numbers be to find out exactly what it is?

 

back right on the top of the trns mounting flange. mine says 3970010.