gear question

Illstate · 12-07-2007, 03:13 PM

I have a 72 Plymouth duster. It is not setup for street at all.
It's a 440 60 over. 1050 dominator
727 trans 8 3/4 rear,
I would like opinions on the best gear ratio to get it up and going like I want it to.

Thank you, Illstate

CAT-TECH · 01-28-2008, 08:40 PM

It sounds like you are gonna do alot of racing in a straight line. If you were gonna use this as a everyday driver I would say 3.23 or 2.76's but for you i would say 4.10's or 4.56's.

deadkelly · 01-29-2008, 10:37 PM

i see a lot of tuff older cars ( in Australia ) at the track launch real hard then they don't go much faster after 1/2 track , only to get run down top end . iam sure its because of to high a gear. iam pondering this very same question for the diff i am building . i am thinking 3.7 3.9 4.1 max maybe as small as 3,5 for a good miles per hour . then true trac or Detroit locker because its still a street car sort of .

12-07-2007, 03:13 PM	#1 (permalink)
Illstate Junior Member Join Date: Dec 2007 Posts: 3	gear question I have a 72 Plymouth duster. It is not setup for street at all. It's a 440 60 over. 1050 dominator 727 trans 8 3/4 rear, I would like opinions on the best gear ratio to get it up and going like I want it to. Thank you, Illstate

01-29-2008, 10:37 PM	#3 (permalink)
deadkelly Member Join Date: Oct 2007 Location: queensland Australia Posts: 48	gears? i see a lot of tuff older cars ( in Australia ) at the track launch real hard then they don't go much faster after 1/2 track , only to get run down top end . iam sure its because of to high a gear. iam pondering this very same question for the diff i am building . i am thinking 3.7 3.9 4.1 max maybe as small as 3,5 for a good miles per hour . then true trac or Detroit locker because its still a street car sort of .

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01-28-2008, 08:40 PM	#2 (permalink)
CAT-TECH Member Join Date: Jan 2008 Location: Cali Posts: 42	It sounds like you are gonna do alot of racing in a straight line. If you were gonna use this as a everyday driver I would say 3.23 or 2.76's but for you i would say 4.10's or 4.56's.