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Started by roadrunner440, September 01, 2010, 05:58:12 PM

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roadrunner440

September 01, 2010, 05:58:12 PM
im putting in a 440 magnum in my 74 roadrunner with a 8 3/4 rearend with a 323 posi are thes good gears or should i find taller ones???

John_Kunkel

#1
September 02, 2010, 03:29:49 PM

It's up to you, if you go to a numerically higher ratio you'll gain some performance but will be spinning faster on the freeway.

The factory seemed to think 3.23 was the optimal gear for the 440.
Pardon me but my karma just ran over your dogma.

71bee

#2
September 02, 2010, 06:55:56 PM
yup, they work great on the Freeway, but SUCK for racing. my Bee came with a 8.75" sure-grip with the 3:23 gears. i'm swapping them out for some 3:56's or 3:73's.

Cooter

#3
September 02, 2010, 07:08:53 PM
Really Depends on what you want out of the car.....You gonna try and crush all the local Chebby's a Furds in a 1/4 mile drag?


Or,you gonna try to carve some canyons?
" I have spent thousands of dollars and countless hours researching what works and what doesn't and I'm willing to share"

roadrunner440

#4
September 02, 2010, 09:12:03 PM
carve crayons???

Cooter

#5
September 02, 2010, 09:20:32 PM
CANYONS...Not Crayons..

Road Racing..Pro Touring.....Top end....Run 200 MPH@1800 RPM's....
" I have spent thousands of dollars and countless hours researching what works and what doesn't and I'm willing to share"

roadrunner440

#6
September 02, 2010, 09:32:25 PM
lol never herd that term
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