Automatic Get me more MPH????
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Joined: Oct 2006
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From: Kennesaw, Georgia
Automatic Get me more MPH???? I have a 6 speed now and if I switch to a TH400 will the auto get me more mph?? Some i have talked to say yes and some say no? I am confused. Anybody from experience know!
I would say no for several reasons particularly with the 400 , 1- lower final ratio one to one in third gear. Add to that a high stall and no lockup and you have considerable waste in converter slip. At your HP and Torque level if want to go auto and still retain efficiency I would consider the 4L80E as a good alternative.
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I am doing the same but going with a 4L80E instead of the TH400. I have heard of losing MPH but getting big gains in ET's. A friend just put a nice stall on his 4L60E from stock and went from a 12.78 to a 12.13. So the stall does a lot i think.
I went from 120.4 mph to 125.8 mph going from M6 to TH400. I also changed the cam though from a 230/234(M6) to the TRex (TH400). I don't see any M6's out there at my track out MPH'ing me though with a similar setup and weight...
Dan
Dan
