Quote:
Originally posted by Unit 5302
Don't know if the 4R70W is junk or not. Stock Mustang's are still losing 1/2 sec in the 1/4 mile with the auto. GM's auto's perform nearly the same as their 6spds.
Until Ford releases an auto that performs near the stick, and it reliable to boot, it's an obvious choice.
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The T-45 is terrible and not even in the same league as the 4R70W. I know for a fact that the 4R70W isn't junk because I went 10s on mine and Lidio Lacabelli made several 9 sec. passes with his. The only reason the GM autos perform so well is because the 6 speeds have crappy ratios. 2.66 lst vs 3.06 in the auto is not even close. With Ford autos it's the opposite. 3.35:1 1st(manual) vs 2.84:1(auto). It's important that we look at all of the factors and not just pieces. I have seen the inside of the 4R70W and it is quite stout. I rebuilt mine to handle over 800 hp & 700 lb-ft. You will need to spend atleast $3,000+ to put a streetable manual that can handle near that amount. I spent less than 1/2 that amount.
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99 Silver GT Auto
DTA Built Engine w/P&P heads, TDC Turbo (T-76), Built 4R70W, PI Multi-Disc 3200 T/C, Eaton 31 Spline Carrier, Strange 31 Spline Axles, Aeromotive 1000 HP fuel system, 66lb injectors, MSD DIS4, Accel DFI Gen VII & Mac 3" cat-back.
Built by Jade Performance
Best on Nitto D/Rs
11.698 @ 120.898 @ 12 psi (built block)
Best on Slicks
10.922 @ 122.95 (stock longblock)
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