Manual to TH-350 gear question
Manual to TH-350 gear question My car is a 6-speed, 4.56's and 28" tall slick. If I switch to auto. (Rossler TH-350), do I need to change the gears? The car traps at 6900 and 127 mph.
I run a TH350 with 28"x10.5" ET drags and 4.10 gears. Also running 126-127mph and my car will bump the 7200 RPM shift light right at the traps. This is with an 8" 5500 stall.
If you can get a 29 inch tire on the car I wouldn't change anything gear wise. If you can't do that, 4.30 would probably be the best bet.
Unless you spend a good bit of $ on a converter that's going to be very effecient, in that case you "might" make the 1/4 with the 4.56 gearing but it's going to be very close.
You're not planning on any more power later are you? If not, then the 4.30 with a 28, or 29.5 with your 4.56 would work. If there's more power in the future, or a serious weight reduction above and beyond what you have already done, then I would just put a 4.10 in it now, maybe even 3.90 depending on your future plans.
Unless you spend a good bit of $ on a converter that's going to be very effecient, in that case you "might" make the 1/4 with the 4.56 gearing but it's going to be very close.
You're not planning on any more power later are you? If not, then the 4.30 with a 28, or 29.5 with your 4.56 would work. If there's more power in the future, or a serious weight reduction above and beyond what you have already done, then I would just put a 4.10 in it now, maybe even 3.90 depending on your future plans.
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