Any difference in a marine 502 gen 6 and a standard gen6 502?
#2
Gold Member
Joined: Jun 2008
Posts: 62
Likes: 0
From: Mechanicsburg Pa./ Cape Coral FL
I used a new gm HP 502 gen 6 415 hp years ago (2008), next to Merc. the power was close, but it did drop in oil pressure at idle after a hard 4500 rpm run. I didnt pull the long block apart.(upgrade gaskets) I had a warr. issue the next year and GM did give me another block for free. Im sure you can get specs from builders on OSO. 7k for Gm,and 10 plus for a Mercury. I was in a pinch during the season and this was the fast way back on the water.



