AMX390 Lower Compression?

[ecase727]

OK I have been reading all these posts for some time now. Lots of great information here, but haven’t found what I am looking for. I have a 1969 AMX 390 that has been in our family since 73 and it’s mine now. The car is untouched other than tires and brakes and I am going through it as a driver restoration. I am not interested in racing it, just weekend cursing and a little fun at the stop lights some time, the way I remember it as a kid.

The engine needs to be overhauled, still runs smooth but a fair amount of blue smoke, its time. I think to ensure it will run well on pump gas, will need to drop the compression a bit is what I get from this forum. I would like to keep the stock heads, will likely need new pistons any way. What would you all recommend for pistons, cam and the like.

Any suggestions would be appreciated.

[Big Bad AMX]

If you haven't already read it you might find this thread helpful.
I think it covers most of what you're looking for.


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[ecase727]

Thanks, I had read through this earlier, but have gone back over it in detail again. My first thought was to just go to a dished piston to lower the compression. But all I am really doing there is giving up performance with out trying to recover it in any other ways. I think the new heads with larger chambers will accomplish both here. I have been to AMX Enterprise’s web site, I have not called them yet but thought I read some where in this forum he was retiring? Also I see in American Performances Site they are closing up shop this month till further notice, the economy is getting us all.

I will need to start searching to see what I can find I the way of heads to rebuild out there. I am looking for a 70 or newer 360 – 401 dog leg head, then manifolds to go with it.

[ecase727]

I have been searching this section, i thought i read the casting number for the dog leg heads here but can't find it. I have located some heads from what is advertised to be a 74 360 - 401 engine. Does any of this look to be the correct numbers?

Ident: 3216090 cast.,
Ident: 3220503 cast.,
Ident: 8123303
Ident: 8124621
Ident: 8128640

Thank you for the help.