Help... BBC piston ????

Alan Roehrich · 05-23-2007, 08:39 PM

According to the blueprint guide, it has a 12cc dome with a 96.4 cc chamber, for 10.25:1 compression. Yes, 415HP is the factored HP for STOCK.

There is no piston listed in the guide. But I can look for a 12cc closed chamber dome piston in my older catalogs. You'd just about have to have some sort of original sample to get a new set made and approved.

I'd say it's a tough combination to make run. That's an oval port closed chamber engine, with only decent compression, and small intake and exhaust valves, but it's factored about the same as a high compression rectangle port 402 with BIG valves. It's a low RPM combination, all torque.

Alan Roehrich

Bring "AA" classes to NHRA Stock Eliminator!

05-23-2007, 08:39 PM	#3
Alan Roehrich Veteran Member Join Date: May 2006 Location: Murfreesboro TN Posts: 5,098 Likes: 1,546 Liked 1,776 Times in 404 Posts	According to the blueprint guide, it has a 12cc dome with a 96.4 cc chamber, for 10.25:1 compression. Yes, 415HP is the factored HP for STOCK. There is no piston listed in the guide. But I can look for a 12cc closed chamber dome piston in my older catalogs. You'd just about have to have some sort of original sample to get a new set made and approved. I'd say it's a tough combination to make run. That's an oval port closed chamber engine, with only decent compression, and small intake and exhaust valves, but it's factored about the same as a high compression rectangle port 402 with BIG valves. It's a low RPM combination, all torque. Alan Roehrich Bring "AA" classes to NHRA Stock Eliminator! __________________ Alan Roehrich 212A G/S