I found a 1980 302 for 400 bucks that has been totally rebuilt with 0 miles on it, but have read somewhere that in 1980 all 302's were debored to 255's for emissions. Which i would really not want if that were the case. Is this true or am i just fooling myself into not buying this engine. Its going to be converted to a carbed engine to go into my 67. Anyone got any ideas or know if they were really 255's? Thanks in advance.

 

Yep, 255 is a 'debored' 5.0
Same stroke but smaller bore.
Tiny ports, small tiny crappy vavles. In short it was a tiny, crappy engine that Ford gave up on.
I really don't even think it's worth $40 unless you have an '80 that you are restoring.
BTW, they were carbed back then , not injected......

 

woaahh alright then thanks, i guess ill just bore out my 75 302 and buy new pistons. thanks for the info tinman.

 

Could a 255 be bored to be a psuedo 302 with the addition of some 302 parts?

 

I just bought an 80 302. for 20 bucks. had it bored to 4.030 bought summit rebuild forged kit. so i dont think bore is the problem with the 255 thing. i think where they get ya is in the stroke. didnt check that. yet.

 

They did make 302s in 1980 just not in the Mustang so it could actually be a 302 possibly a truck motor or large car application.

 

Guess the engine code huh? man if i were only smart

 

In the lifter valley it has 80 and over both lifter bores it says XXX. on the back pass side bottom it is hard to read with a crappy casting but it looks like DOAE and under that it looks like DEC. any thoughts??

 

correct me if am horribly wrong, but doesnt XXX mean its a roller motor?

 

this thread fails.......

yes ford made a 255 which sucked *****...... but ford was STILL MAKING 302's IN 1980!!!!!!