Quote:

Couple of facts about the current car from this past year.
3670 lbs 46.5% rear weight. (no weight in trunk)
Caltracs running .05 gap. Rancho shocks work best at 3-5. Have to hit the tire HARD
Front end travel is 5.5 inches and it’s very loose.
30x9 Hoosier DO5 slick on an 8” rim. Have 1/4-3/8 clearance each side before rubbing. Tire psi works best at 12.5 no tubes.
505 cubes, 640 roller .272 @ .050 with Rick Allison cross ram
Low gear set with 4.10 gears.
On a new good tire it 60 foots 1.44 /1.47 – that goes away after about 35 runs
Car runs 10.5’s



Using the Wallace calculator,,,for your car,,running 10.50's,,it predicts a 60' of 1.44-45 ( seems close to what you posted )

http://www.wallaceracing.com/calc60ft.php

The calculator is pretty spot on for my car ,,,and ET.

I run Caltrac's ,,, and keep chipping away at my ET with weight loss, shocks, convertor adjustment, carb squirters, timing, tire pressure, etc,,,and have been able to get from a 10.26 down to a 10.04,,,and the 60' improves as my ET improves,,,1.43-44,,,down to a 1.39-1.41
(451, solid cam, Edelbrock RPM heads, dominator, 456 Dana, 31 x 10.5 tire/tubes, caltracs, ranchos, etc)

good luck with the car,,,ps,,,GREAT pic in the original post,,,wheels up,,,





Doug