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Print in friendly format Send this term to a friend  Mouse Motor
GM production small block engines were known as Mouse motors.

Early SBC

4.3L 265ci - 1955 thru 1956
4.6L 283ci - 1957 thru 1962
4.9L 302ci - ...
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Re: New Cylinder heads arrived !

Subject: Re: New Cylinder heads arrived !
by AKS_Racing on 2009/1/23 14:51:33

Quote:

rklessdriver wrote:
The AFR 227 was always a 60/40 valve spacing low port 23 degree head.

The 210 uses standard valve spacing.

The AFR 215RR was the raised runner 23 degree head (like the GM/Pontiac 867). ...


Will,
Thanks for the info. I knew there was an AFR head that was available that was bigger than what I ran that required considerable mods to make it work with the MRII. I had looked at bigger heads, but decided for my goals (with large boost) that the AFR's I had selected would work fine.

Thanks again for clarifying.


Beach,
Any thoughts on using shaft rockers? To me, this is the key to longevity in a large SR cam application. I know that you are going HR, but I feel certain that the cam will be decent and the shaft rockers may give you that added insurance (plus accurate valve movements due to increased valvetrain stability).

Again, nice heads!

Aaron
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