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Ol' Ron · 12-12-2017, 10:30 AM

I made a mistake on the 81A head. I think it was the 81s head which is sometimes called the 'Denver head" I learn allot after building many engines and sometimes I get mixed up on just what I did. But I will stand by the piston to head clearance as being a very good mod. As it improves drivability as well as economy, for very little cash.

12-12-2017, 10:30 AM	#51
Ol' Ron Senior Member Join Date: May 2010 Location: Chester Vt Posts: 8,985	Re: Building for Torque Porting Question I made a mistake on the 81A head. I think it was the 81s head which is sometimes called the 'Denver head" I learn allot after building many engines and sometimes I get mixed up on just what I did. But I will stand by the piston to head clearance as being a very good mod. As it improves drivability as well as economy, for very little cash.