066 piston

[Lumptastic]

So I’m just trying to figure out if the flat top 066 and newer 066/ms660 use the same pistons. Couldn’t find anything on it in other threads. I’ll still be using the oem non decomp cylinder. Also I can’t remember where I heard this but I believe at one point someone saying that you can’t use the pop up pistons on flat tops. Is that correct?

 

[L34]

Believe pistons the same.
Pop up-don't know.
OEM 066 should have heaps of comp anyway.
All of mine do.

 

[trains]

IPL shows same part no for 066 to 660

1122 030 2005

there is a difference in cylds for au and usa and arctic, but that was the only difference, there, there are 2 different base gaskets 0.5mm au one and 1.0mm us one.

 

[Mad Professor]

IPL shows same part no for 066 to 660

1122 030 2005

there is a difference in cylds for au and usa and arctic, but that was the only difference, there, there are 2 different base gaskets 0.5mm au one and 1.0mm us one.

USA one might have to do, with EPA regs here? I wonder if the ports are different?

 

[trains]

USA one might have to do, with EPA regs here? I wonder if the ports are different?

yep, pretty sure they are, I recall a thread a while back that covered the different timing of them.