Originally Posted By OhioMopar
Originally Posted By Cab_Burge
I use to drag race several different stick cars, you can change the first gear ratio to make the car leave harder without changing the rear gear scope
IE, we used a early A body NP833 23 spine tranny in my old 340 Duster street and strip stick shift car, the stock first gear ratio in them is 3.09 thumbs work devil
My current street and strip car I'm building now has the O.D. NP 833 tranny with the same first gear ratio and .64 % over drive, I'm using a 3.55 ratio Dana 60 in that car with a 464 C.I. 440 motor on pump gas, hopefully the O.D. tranny will hold up to a little abuse luck

Adding a 3.09 1st just makes the gear spread terrible. I will drive it more than race it
If you're putting a lot of power to the overdrive 833, I'm thinking you're going to be disappointed with its longevity.



Agreed. Went this route several years back. Actually bent the input shafts twice. Annnnd, I didn't go any faster. Actually went slower. Went back to an 18 spline with 2.65 low and everything is good again.


Also, I don't know if they will chime in, but there are 2 other cars that are pretty impressive. My Son's '69 Dart, street car(Lar414), with a 414 stroker has gone deep into the 11's.

A good friend of mine, OLDIRON has a '67 Barracuda that has gone low 9.90's.

Both cars are very impressive, Just sayin'..........

4 speed street legal. Best time 10.99 @ 124 mph on 93 octane pump gas @ 3926# total weight