shawnp

It sounds to me like your buddy is trying to drive thru the burnout. What I mean is that the tires are trying up quickly and he is trying to be John Force. What he is feeling is not shake but the tires are trying to grab traction.

hammertime

whats the car 60ft and run et wise ? thats very slow delay

johnracer

Shawnp, his first couple of burnouts were pretty long, but even after making them VERY short, he was complaining about the shake. I think youre correct though. It's the tires biting coming off the throttle after the burnout. Hopefully padding the seat will help.

David, it 60's in the 1.15-1.16 range, 5.0's @ I think 138 at the 660 and 7.90's @ 169 at the 1320. Agreed, it's very slow delay. I run 1.117-1.126 in my Vette now that it's sorted out and figure this car should take that and more.....

johnracer

I'm hoping if we can get him focused instead of tensed up and trying to crush the button, his lights will improve. If weather permits, we'll find out tomorrow.....

hammertime

Them 60fts are slow also. He should have around 1140 delay with a probrake. I am 1100 right now with a non pro brake. Converter ?

johnracer

Man, I thought those 60's were pretty good! How quick should they be in a high 7 sec dragster? He's running 5psi in the slicks now and we could certainly go lower. Convertor is a JW and stalls at 6000 behind the 565. It was set up for the same engine in his 72 Chevelle running 9.0's at 148 @ 2800 lbs.....

hammertime

1.12 atleast but when I ran 8.0;s with my bb it'd go 1.10
6000 is a touch tight also, which would normally 60ft faster. Is it a 8 or 9" converter? Setup for a heavy door car vs a light dragster though. I assume JW said it would work good ?

I think you may of just stumbled on to slow on the reactions. I have several different converters for my car, one that will go 1.02 60ft, or as slow as 1.12 both run 7.50ish or faster. Delay is about 35 different between the 2 of them.

johnracer

It's an 8" converter. Didn't check with JW, he just wanted to save some $$ and we figured it would "work" as it is. It does, but could certainly be better set up for the dragster. I didn't realize that the converter could have that much effect on rt's. Of course if it 60'd quicker, in theory the rt's should be quicker too....I'll relay the info.
Thanks,
Johnny

johnracer

No runs today, got blown out. 30-50mph winds at the track and they called it........

shawnp

John

You racing in Denver? I would think with a single carb on that motor that 1.12-1.13 would be right for up there with a low 7.90 ET. The correct converter for the application is going to help a bunch here as far as the ET and reaction time but also remember the delay box adjust as everyone reacts differently. Had a buddy that was lucky to see delay at 1050 on a good day but he was very consistent on the tree.

As for the burnout shake, I would bet he is just feeling the tire grab when lifting. Padding will help with some of that but it will still be there. No way around that.