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Rocket 1
08-31-2012, 07:02 PM
Just purchased this 04 grt looking for someone that can tell me what springs i should start with to scale car it currently has lf550 rf 375 lr 225 rr 225 any help on this setup would be greatly appreciated just want car to drive good on slick,also anyone know rideheights.

RACR_73s
09-01-2012, 09:41 AM
click on the GRT late model standard set-up sheet

http://www.teamgrt.com/setup2.html

The only thing that is not correct for driver weight in the car, is the left side %...it should be 54.5 and rear % should be 55.0 according to Joe Garrison(I personally got those #'s from him on the phone). He also said about 110-120# LR but I have been in the 130's and last week I tried 145# LR. Also last week I moved the RR upper bar down one hole to help the car turn getting in. The car turned in MUCH better, the front did not wash out and the car rotated very nice and did not seem to affect middle and exit much...which is what I was hoping for. I did however leave the RRU bar where it was for the feature and it was to free for me, so I will put it back in stock location next time for the feature.

I am not a set-up expert and run a limited late model class but this is working for me. I am working on it and asking many ?'s still but this site might help you. ~Good Luck~

Rocket 1
09-01-2012, 01:39 PM
What is correct length of grt driveshaft with bert ballspline tranny?

RACR_73s
09-01-2012, 07:44 PM
I will check tomorrow...had an aluminum one installed before the start of the season with the ballspline...then I read a post about it and took the trans and driveshaft out. Don't use the ballspline unless you have a carbon fiber driveshaft...think about what would happen if the shaft breaks...yikes!

SS Motorsports
09-01-2012, 11:00 PM
correct driveshaft length is 39 1/2 I beleive

grt74
09-02-2012, 03:24 PM
drive shaft should be 38.5 for bert ballspline