502 Mag MPI o.s. pistons
12-04-2007 | 04:51 PM
#11
Thread Starter
Registered
Joined: Feb 2007
Posts: 161
Likes: 0
From: Sweden
Well, that option is starting to look more attractive than a rebuild. Did you go for the GM 502 HO?
Last edited by Alex; 12-04-2007 at 04:52 PM. Reason: Too small keys on the key board *lol*
12-05-2007 | 01:06 PM
#13
Jerry B
Joined: Sep 2003
Posts: 209
Likes: 0
From: Blue Springs Missouri.
Alex: My boat is a twin so I needed an exact replacement engine so I did not buy the GM 502 HO. I'm not sure it has the correct cam for marine application. I bought a 502 marine engine. I cant remember who from at the moment. It does have a roller cam where the other engine still in my boat has a flat tappet cam but I cant see any difference in the way they run.
I have seen these engines for sale new around 4500.00. So if you are going back stock it might be the best option. Sometimes the time of season may be a factor. I didnt want all the down time waiting for the rebuild. It was the middle of summer.
Jerry.
I have seen these engines for sale new around 4500.00. So if you are going back stock it might be the best option. Sometimes the time of season may be a factor. I didnt want all the down time waiting for the rebuild. It was the middle of summer.
Jerry.
12-05-2007 | 02:13 PM
#14
Thread Starter
Registered
Joined: Feb 2007
Posts: 161
Likes: 0
From: Sweden
That must be the piston they (JE) mentioned in their mail.
12-05-2007 | 02:22 PM
#15
Thread Starter
Registered
Joined: Feb 2007
Posts: 161
Likes: 0
From: Sweden
Alex: My boat is a twin so I needed an exact replacement engine so I did not buy the GM 502 HO. I'm not sure it has the correct cam for marine application. I bought a 502 marine engine. I cant remember who from at the moment. It does have a roller cam where the other engine still in my boat has a flat tappet cam but I cant see any difference in the way they run.
I have seen these engines for sale new around 4500.00. So if you are going back stock it might be the best option. Sometimes the time of season may be a factor. I didnt want all the down time waiting for the rebuild. It was the middle of summer.
Jerry.
I have seen these engines for sale new around 4500.00. So if you are going back stock it might be the best option. Sometimes the time of season may be a factor. I didnt want all the down time waiting for the rebuild. It was the middle of summer.
Jerry.
The history though goes like that the 502 was originally intended for marine use since it has not been factory fitted in any car. Later of course it has found its way down under some hoods as well.
