Oh yea, high bite tracks make for some great times but will break **** quick.
Was out in Surprise AZ at a 1/4 mile strip in the Grand Prix and was looking to see what the new Whipple setup on it would do. First I was going to go out on street tires then, if I ran a 12.5, would change out to slick. I pulled a 1.993 60' on Sumitomo street tires...on a FWD Grand Prix 2.0X was a fast 60' so a 1.9 was unheard of.
10 cars went home on flatbeds with broken drive train components that night including my friend's Grand Prix. He was almost stock with a wicked tune and a shift kit in the trans. The shift kit had been put in before the tune so when I put it in, I put in the hardest setting it came with. When I was later able to tune him, I told him I could up the line shift pressures but that he HAD to change the shift kit from firm to medium. When he broke, he said the car launched great but as soon as it hit the 1-2 shift...BANG...and nothing. No movement. Engine would just free rev. Turns out he busted his torque converter.
I asked him, "You DID change that shift kit, right?"
Sheepishly he responded, "No..."
Like the Grand Prix's transmissions, our differential cases are notoriously weak but it sounds like you broke the differential itself, not the case...
Peg Leg Pete burnouts and wheel hop will kill a lot of drivetrain components too. You may have damaged the diff on the burnout and then the stress of launching finished it. Too bad Quiafe didn't have any more of those wonky miss-cut differentials for sale for $300...I'd say drop one of them in.
Last edited by Robotech; 09-24-2019 at 01:46 PM.