Quote:
Originally Posted by dcdoug
I think the Blue Thunder intake is supposed to flow better than an original sidewinder although it is pretty true to the original design, but other than that, should be pretty close. Not sure on the size of the Holley on the single 4bbl cars either, but I'm sure someone knows that.  |
Of all the dual planes, the blue thunder in general makes the most power, more than the sidewinder and performer rpm, but not by much.
From my understanding, the original carburetors were 780cfm vac secondary, but many racers bought /upgraded to the 850 cfm. I'm running a Holley List # 3255-1 (780 cfm), 3255 was for MR engines, 3255-1 for highrisers, as original equipped on crate engines. 3259 (735 cfm) for 289 HiPo's. I'm sure there were other carbs as well