Traction Control Needed...
You might try a traction aid...
AJ/FormS,
All good info there. I looked up all those items. Let me see how it shakes out at the track first. If I hit 13.99 as it stands, then I probably won't be interested. I have a feeling if I hit 13.99, I'm going to get interested in a squirt of NOS (future). Just for sh1ts-n-giggles and maybe a 12.99 second ET. But again, I don't know. I kind of like the car in it's original form.
I will add this. I found a bunch of drag slips from the previous owner. No way he ever hit 13.99. And to be honest, with all the slips I have, and the slips / data I have from June last year, I doubt it ever saw 14.99. 15.4 is the best this car ever ran. But it was always RICH, with very poor exhaust. And the timing was way advanced.
With all the data, I have put it all in xls. And using the most common h.p. from ET and h.p. from trap speed formulas I can find, there is always a fairly substantial difference in h.p. from ET and h.p. from trap speed.
H.P. from trap speed is always higher. Which, I believe means that traction has always been an issue (open diff). Now that issue has been improved with the Truetrac. We'll see how it works out.
Based on the math, to hit 13.99 seconds, I need an additional 62.4 hp (ET based). I need only an additional 20 hp (trap speed based). What these 2 numbers mean to me is ... it needs way more traction improvement than it does actual power.
I think I have 20 more engine horsepower based on the tuning I've done. But, I suspect that even with the TrueTrac, I may not have an additional 62 hp ET wise. Don't get me wrong, I know these numbers are estimates, and that trap speed best represents actual horsepower. I'm just thinking out loud here ... trying to convey what these estimates indicate.
Based on these estimates, I think it's going to be very close, and likely not enough traction to break the 13 second barrier. But it is a fun project.
Last of my long-winded post. When I was at the strip in June last year, there was a tubbed-out 55 (or so) Chevy there. Looked good, sounded bad ***, big ole drag slicks, gauges, yada yada yada, and he ran a 14.2. It would be fun to out run him (or some similar vehicle) with a very original looking Scamp on 215/60 R14s! As it was, I beat him on reaction time, but then watched him drive away. The Scamp wasn't feeling so good back then.
7milesout
