Hey guys I'm hoping you can help me out here.

I have an '85 302 roller motor that I'm rebuilding. I'm having a problem with the timing chain set. It needs to know whether or not it's an HO or not. Thing is, I have no clue if it is or not. I assumed it was an HO if it's a roller and came out of an '85 mustang. I also don't have the original timing gears/chain unfortunately so I can't match part numbers. Here's what I do know. It's a 1985 roller block out of a mustang, with casting number E5AE. Can any of you help me out? Thanks! I need to get this beast back on the ROAD!!!

 

if you're sure it came in a 'stang from the factory then it's an H.O.

 

Cool thanks... What happens if I put an HO chain/gear set on if it's not an HO? Just curious.

 

check to see if the chain/gear set share the same part #'s. if not i'd use the correct one.

 

nothing, they are all the same, make sure you get a double roller chain and gearset, i usually get mine from autozone.

 

Yeah I tried there first but they didn't have them... at all. Neither did Advance Auto... Doesn't make sense. How can you be called an auto store and not have a timing gear set for a frikkin 302... But I found one at Napa for 27 bucks.