I seen the 1st U-tube Vid Grumpy recent prior Grumpy. Its a nice lesson in Internal Combustion Physics at work for you. Tonight I will post a few old HO RACING ARTICLES. SCANNED FROM A VINTAGE HOTROD MAGAZINE I HAVE. Need to eximane close as a group. More Sbc & BBC & LS 1 ENGINES READILY AVAILABLE . Pontiac 421& 428 &455 hard to find today. A Corvette shoud stay Chevrolet powered too.