[miltystu]

Originally Posted by lloyd tucker

I need help folks. I'm new at dirt track racing. I race on a local 3/8 mile high banked dirt oval. I'm racing a 78 Nova, 305 2bbl 3 spd auto completely stock. We're allowed to change rear gears (no positive) but no motor modifications. They drench the track with water before this particuar race so it is the worst imaginable scenario but extremely fun.

Is there any way of telling what gears came in this type car without pulling down the rear? There is no tag on the rear. What gear should I put into this rear end & what kind of vehicle should it come from?

I've been told I should run a smaller tire on the inside of the car. The outside tire is a 205/70/14. What size tire should I put on the inside to produce the best results?

What kind of tire pressure should I run on the tires to produce the best results? It appears other drivers tires are fully inflated. (no slack)
I'd appreciate any help anyone can offer. I know there is someone out there that can help me. Thanks in advance for your help.
LLoyd

If I'm not mistaken the axle ratio should be on one of the axle tubes. Can you use after market ring and pinion.