4R70w or AOD - TCCoA Forums
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post #1 of 2 (permalink) Old 11-22-2005, 09:19 AM Thread Starter
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4R70w or AOD


What is the maximum torque converter rpm? for the 4R70W? AOD?

Or will the old C4 be better?

I am looking for about 6500 rmp. I will be using in a Circle track Car, Behine a 351W 2bbl.

Paul [email protected]

Paul [email protected]
1990 Thunderbird Circle Track Street Stock
351W 2bbl.
C-4 Auto
3.90 open rear
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post #2 of 2 (permalink) Old 11-22-2005, 03:56 PM
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Join Date: Dec 2004
Location: Kansas CIty
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You won't get an AOD to circle track worth a crap - If it were me, I would use the C4. The 4R would be nice except that is alot of weight in parts you don't need (aka 4th gear). The AOD doesn't hold 2nd gear without mods, and even then it is iffy to have engine braking - same goes for the 4R - you will burn the band going into corners under engine braking eventually - so i would think.

------------------------- Dan Gilsdorf ---------------------------
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