383 and 440, 383 + .030 pop up pistons 0 deck height, 67 stock heads, a ton of compression, 509 cam, torker intake 750 DP. Ran 7.0 1/8th. 440 dead stock (74) low compression, 452 heads with a little bowl cleanup, same cam out of the 383, torker intake 750 DP best was 7.59. Same adjustable rockers on both, same stock (spacer) electronic dist and MSD 6, same coil. 3800 vert and 4.88 gears 14-32 slicks on both cars. Now 383 was in a Dart and 440 in a 64 all steel Savoy. Maybe 200 lbs different
My conclusion, you can’t beat compression.
And the differences in ET and MPH was
Oops, ET was .6 in the 1/8 mile
How about 60 ft. times?
My BB 1969 Dart GTS weighed 3100 Lbs. without me in it, my lightest 1963 Plymouth Belvedere weighed was 3420 Lb, no heater, radio and with light weight Crager Super trick wheels and race tires on both cars
Best ever on the Plymouth was 11.23 at 119.+ MPH, the Dart best was 11.17 at 122. +MPH
100 lbs. added on most cars equals .10 ET in the 1/4 mile
BTW , were both cars tuned to for best performance at the same track and similar weather conditions?
