Going up in smoke off the line

Hi all, we are running a heavy doorslammer type car (3,300lb) with a 3 stage auto and 1600BHP BB Chevy. We need to get more weight transfer to the rear on launch and want to drop the front of the top 4 bars as they are currently parallel with the lower bars. Is this the correct way to go? Cheers

 

I dont know jack about 4 link cars, but I will tell you launching a heavy blower car can be a real pain.

You need to video the launches so you can study what the car is really doing and look at the tire track patterns, going off of what the driver or crew guy thinks is goin on might work, but you are still shooting in the dark more or less.

Whats your tire size, gear ratio's, shock settings, % of wieght on rear/front, stall rpm? To get a good answer from the really smart ones on here they really need more info.

We run a 3250 lb door car on 10.5W's at around 1500hp, this spring will be our 3rd season and we still dont have a 60' for shit, we did go up in smoke a few times and we played with tire pressure and swapped converters and it went away for the most part, on a crappy track it'll still smoke the tires sometimes. Our main problem now is when we go to a good track we cant keep the damn front end down.

 

Hi guys, no we dont have any retard devices, we are running MT slicks 32x16x15 with stiff side walls) set at between 5 1/2-6lb, the shocks are single adjustable only. The set up is fairly basic but we used to have issues with pulling huge wheelstands, we changed the 4 bar set up several years ago and now have the opposite issue so I just wanted to make sure I didnt go the wrong way with the 4 bars. Cheers Graham

 

Hi Mike, no I dont know the IC but I have worked it our before. I think I will try dropping the front of the top bars and see how I go as it cant get much worse !! I used to hate wheelstands but now pray for them !! Thanks for your help Mike and take care. Cheers Graham

 

OK, great advise and thanks again for taking the time to help out. Cheers