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Originally Posted by Keller
You may forget that the TTA had four wheel disc brakes, and their front rotors were larger than those of the G-body fronts. The 16" wheels were required to fit their rotors. The swept area is much larger than the TRs! The rear brakes on our cars are about as good as Fred Flintstone and his feet at high speed.
This is like comparing apples and cumquats. the 1LE package on the TTA is light years better than the 1960's era braking system (sans Powermaster) in the TRs.
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Lets not get confused here PB Bob is stating that the turbo V6 does not pull enough vac for the vac brakes to work properly.
The TTA with 1LE, larger disc, 4 discs or whatever is besides the point. And yes the brake torque from the larger rotors on the TTA is way better than the G Bodys not doubting that a bit and that fact never came under question or scrutiny....thats not the point!
Your saying that since the TTA had bigger rotors and the 1LE package is the reason the VAC brake system works on the TTA and you cant compare the 2 since the turbo regals brakes are 60's tech.
I guess the N/A engines in the GTA's and other equally brake equppied N/A powered TA's that pull vac more than the no vac pulling Turbo v6 stop 100 foot shorter than the TTA.
Its not a question of which car is better equipped from the factory brake wise i'm talking the engine ability to pull vac and the vac brakes ability to work.
I.e- PB Bob says the Turbo V6 doesnt have the vac to support a vac brake system.
I saying the TTA has it and if it would not pull enough vac I dont car if you had 14" brakes its not gonna stop properly.
My GN has the swap and I have not had one downside and can hold the exact same boost as with the PM. I have to admit i was nervous on the vac brakes ability tio hold boost but was pleasently surprised that it held the same amount.
MHO FWIW