markdunlap
09-12-2010, 03:04 PM
This is the best problem I have ever had with a drag race car, but it is still a problem.
I do not have a NHRA license anymore and don't intend to get one again. My 1980 Chevy Malibu is back halved, big tired with a 496 BBC, 1050 Dominator carb, and Powerglide. It weighs 3150 with me in it. I can go 6.40 seconds in the 1/8 mile without a license.
When it is 90 degrees out and not great track conditions I am able to keep it above 6.40 with just backing off the timing and lowering starting line and shift RPM chips. But on a good day and good traction, it is still too fast.
Right now I have a mechanical stop for the carb and have it slowed down that way, but it hurts the 60 foot time about .10 second . I have the carb shut off to about 60 degrees open. It still runs the same MPH, 106.
I have had an inline throttle stop before but dont have one set up for this car. I didn't really like the throttle opening and closing with that set up.
I was thinking about maybe hooking up a MSD retard module and then use it down track with a timer on my Mega 450 delay box. That way I could have it turned up all the way in first gear and slow it mid track, but have it back full tilt for the finish.
I know there was a rule about down track stutter boxes years ago, but I haven't seen anything about it lately.
Anybody have any success with this or a better idea?
I do not have a NHRA license anymore and don't intend to get one again. My 1980 Chevy Malibu is back halved, big tired with a 496 BBC, 1050 Dominator carb, and Powerglide. It weighs 3150 with me in it. I can go 6.40 seconds in the 1/8 mile without a license.
When it is 90 degrees out and not great track conditions I am able to keep it above 6.40 with just backing off the timing and lowering starting line and shift RPM chips. But on a good day and good traction, it is still too fast.
Right now I have a mechanical stop for the carb and have it slowed down that way, but it hurts the 60 foot time about .10 second . I have the carb shut off to about 60 degrees open. It still runs the same MPH, 106.
I have had an inline throttle stop before but dont have one set up for this car. I didn't really like the throttle opening and closing with that set up.
I was thinking about maybe hooking up a MSD retard module and then use it down track with a timer on my Mega 450 delay box. That way I could have it turned up all the way in first gear and slow it mid track, but have it back full tilt for the finish.
I know there was a rule about down track stutter boxes years ago, but I haven't seen anything about it lately.
Anybody have any success with this or a better idea?