Originally Posted by Dragula
I am a little confused by the HP estimates of my car depending which one I use.

If I put in my ET and weight with me in the car, I get like 628hp, I change it around and put in weight and hp to calc ET and I get like 780 at the flywheel...Who uses what, and what am I doing wrong?

Car with me in it is 3000lbs, and best 1/8th mile ET is 6.00 at 114.5mph.....Best actual 1/4 is only 9.66 with a 6.15 in the 1/8.....earlier in the season. Trying to figure out what the 6.0 is for HP


For comparison sake, the guy who bought my old car went 9.62@ 140. Car weight with him was 3220.
It made 708 on the dyno when Best Machine did it. That time was on super stock springs, so pretty crude suspension.
Figure 220 pounds less weight, about the same mph, probably an honest 660 ish horse
When i had the car( few less go fast goodies) went 135@ 3350. Back then several guys had a thread on here, they were checking ET/ MPH against Moroso calculator
That 135@3350 was 640 ish.
Again, your weight, likely somewhere right between 640 and 700ish

Last edited by B3422W5; 10/20/20 10:51 AM.
69 Dart GTS A4 Silver All steel, flat factory hood, 3360race weight
418 BPE factory replacement headed stroker, 565 lift solid cam
Best so far, 10.40 @127 1/4
1.41 best 60 foot
6.60 at 103.90 1/8