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hey guys new here. build help

fuhrer440

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I just bought a 1969 Dodge Superbee
it runs a consistant flat 12.
It only has a 3.91 gear, i am thinking about upgrading to 4.30
ADVICE????Thnaks

Also i want to purchase the inboard leaf spring kit and the caltrac set up. What is the biggest tire/wheel setup can i fit then under there? what is the back spacing? thanks
 
Last edited:
I just bought a 1969 Dodge Superbee
it runs a consistant flat 12.
It only has a 3.91 gear, i am thinking about upgrading to 4.30
ADVICE????Thnaks

Also i want to purchase the inboard leaf spring kit and the caltrac set up. What is the biggest tire/wheel setup can i fit then under there? what is the back spacing? thanks

only a 3.91? well do u drive it on the street at all?
 
We need much more info on the eng build and the car. I will say my son runs 3.91's in his Dart with a 26" tire and it works great for him. He has 400 in his Dart and has run 11.40's. It is a street car like my 63 as we drive both of them to the track. Ron
 
yes it will be driven around town, it has a 727 with a .30 over 440
 
Sounds to me that you are trying to optimize for the 1/4 mile. Do the 3.91's allow the engine to rev at the max HP RPM through the traps? If so then I'd say you don't need a change.

Don't know the back space for sure but seems to me you should be able to get 10" of rubber under there with the springs moved in.
 
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