Years ago Lee Atkinson changed from a Ultradyne 231/239 at .050"/ 108 LSA hyd flat tappet cam to a Ultradyne solid flat tappet cam with 247/247 at .050"/ 108 LSA and he picked up about 2-tenths and 4 mph ( best of 11.27 at 199.61 mph, I think ).
Steve, is that a "typo" on the 231/239 cam being on a 108LSA?
If it was, not suprising at all that moving up to a flat solid with nearly 250 @ .050" would pick it up considerably......Cliff
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https://cliffshighperformance.com/
73 Ventura, SOLD 455, 3740lbs, 11.30's at 120mph, 1977 Pontiac Q-jet, HO intake, HEI, 10" converter, 3.42 gears, DOT's, 7.20's at 96mph and still WAY under the roll bar rule. Best ET to date 7.18 at 97MPH (1/8th mile),
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