CLASS RACER FORUM - View Single Post - What class does this supercharged / stick Thunderbird fall in?

Fred Holdorf · 11-17-2010, 01:23 PM

Jeff, My 1964 NHRA Classification Guide says: '57 T-bird Convertible @ 10.47 pwFt. That's 3141 pounds. (natural "E" class car). The T-85 trans was strong enough in the old days, and there are C-4 to "Y" Block bellhousings. Spec was 6# boost @ 4600 RPM's and 1# more for each 1000 RPM's. Would the powers that be, allow a superceded blower?

Interesting, Fred

11-17-2010, 01:23 PM	#1
Fred Holdorf Junior Member Join Date: Oct 2003 Location: Minden, Nv Posts: 44 Likes: 0 Liked 0 Times in 0 Posts	Re: What class does this supercharged / stick Thunderbird fall in? Jeff, My 1964 NHRA Classification Guide says: '57 T-bird Convertible @ 10.47 pwFt. That's 3141 pounds. (natural "E" class car). The T-85 trans was strong enough in the old days, and there are C-4 to "Y" Block bellhousings. Spec was 6# boost @ 4600 RPM's and 1# more for each 1000 RPM's. Would the powers that be, allow a superceded blower? Interesting, Fred Last edited by Fred Holdorf; 11-17-2010 at 01:24 PM. Reason: spelling