Quote:
Originally Posted by Super73
Nice times.. Couple questions for you..
Is your front end strapped/chained down? Watching your launches it looks like you get very little movement in it. I also noticed it oscilates a bit front to back right after the launch (Maybe even as far out as the 60' mark)..
What does your front and rear suspension consist of? Factory or modified? (Guessing M2 front with the front width).
Kind of 60's were you cutting?
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Front end is a Jegster front circa 1983. It has a rack & pinion with Vega spindles/shocks and travel limiters. The rear is stock trailing arms and springs, stock replacement shocks.
The "hop" as we've been calling it used to be a lot less and then became even worse. Now we're getting better. The last motor combo with mechanical fuel injection hit the tires harder and didn't allow as much hop. It would hike the left front and 60'd in the mid 1.40's. We've since switched to a gas carb and a less radical cam which brought some hop back to the launch. I talked with my Goodyear distributor where I bought the tires new and learned a few things in the process. I have a stiff sidewall slick that requires more air than I was running. Usually I ran them at 8 lbs, they said to start at 15...
Also, they recommended rotating the tires side to side every 10-15 passes, this was a new one on me. So, in these videos I've got 13 psi in the freshly rotated slicks with less starting line RPM than usual to allow the converter to flash a little harder. 60's in this video are all 1.54's and 1.55's.
Now, we're considering a change to the distributor to lock the timing all in. At the rpm I want to leave at, the mechanical advance is was low in the curve. I bet there is a few HP to be found down low in doing this.