Choosing a Manifold:SBF

[SSDiv6]

Originally Posted by FireSail

SSDiv6:
I ordered flat top pistons to begin with, but they were always backordered. I switched to the 1970 BOSS 302 which NHRA says has a 5.090 rod and ordered domed pistons. After receiving the pistons I realized that NHRA made a mistake and my build would be illegal. Short rods must run flat top pistons. Rather than try to rub the blueprint page in some techs face, I have opted to finish the engine with the pistons I have and bracket race this year, then switch to flat tops over the Winter and run GT using the 302/230 combo designated for the 68 Cougar. It lists the 600 cfm Holley carb offered on the GT350 that never made it into the blueprint lists. This puts me back where I started at probably GT/M or LA. Lot of nice competition in those classes.

Ed Wright:
As for bracket racers thinking they are more legal than they are, well, I’m not legal and I know it so I’m going bracket racing. I’ll class race when I can.

Personally, I think we should encourage bracket racers to see what changes they need to make to slip over into SS or GT. Some of these cars are a carb and hood scoop away from class racing.

Dale

You will not find a Stock or Super Stock eliminator piston on the shelf unless it is a Speed Pro type piston. So the dome pistons you ordered and ready to use, are they for a Boss 302 or an AFR combustion chamber? The AFR cylinder head is a 20 degree head while the Boss 302 is a canted valve, Cleveland series head. They are two different valve layouts.