th400 rear gears?

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Nov 2, 2004 | 02:39 PM

liv2race

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From: SoCal

th400 rear gears?

i have a th400 with 3.23 but i want better ets so can i go with 4.10's or is it too much gear do i need 3.73's? i am not sure i dont want to buy 2 sets of gears
it is just a drag queen so fuel economy is not a big deal
the car weight is 3600 with me in it stall is 3800
th400 gear ratio is standard
thanks guys

Nov 2, 2004 | 04:14 PM

john kilgore

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From: burbank ca

trans gears

Quote:

Originally Posted by liv2race

lf you install a 2.75 gear set in your 400 your car will think you have a 3.59 rear end, and a 3.00 gear set will be a 3.91 good luck

Nov 2, 2004 | 07:43 PM

liv2race

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From: SoCal

thanks
but i was wondering on rear end gears does anyone have experience with a th400 and rear gears? what rpm's in the quarter will you push with 4.10 or 3.73?
thanks

Nov 2, 2004 | 11:00 PM

Navy David SS

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From: Sioux Falls, SD

4.30's here. Th400 - 4200 stall now - 200 shot out of the hole. Standard TH-400 gears. Shift at 6500-6600. Use 30x9 Goodyear slicks. Cross the traps at about 6500. Best todate - 1.40 60'; 10.49; best mph 129.9.

4.10's on 28" will work

David

Nov 3, 2004 | 01:28 PM

Pro Stock John

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From: Chicago, IL

I have 3.50's, 28" slicks, and T400.

I had 4.10's before and I was buzzing a lot of rpms all the time.

I plan to cruise a lot in 2005 so I wanted some gas mileage.

Nov 3, 2004 | 11:08 PM

liv2race

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From: SoCal

thanks guys that is alot of help
hey dave can you get a 30x9 under a stock f-body or did you tube it?
also john what were your r's at the end of the quarter with 4.10's
thanks all posts have been really helpful

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