Thread: HD diff and axle

Complete HD diff with ring gear, 3.29, HD Housing and good drive axle. $150 plus shipping

3.73? The only HD diffs I've ever heard of were 3.29 ratio.

Correct your post to 3.29 just in case people looking for a diff don't scroll down. GLWS

I thought GTPs were 2.93 and GTs are 3.29. No?

1.121 gear ratio at the chain on the driverside combined with a 3.29 diff = 2.93 overall ratio (Any 3.8L SC)
1.000 gear ratio at the chain combined with 3.29 diff = 3.29 overall ratio (GT NA's)
1.000 gear ratio at the chain combined with 3.05 diff = 3.05 overall ratio (Regal NA's, some other buicks as well)
92-95ish you could also get a Bonneville/LeSabre with a 2.86 ratio.

04-08 N/A GP's were all 3.05, for some reason they changed it with the last generation... But the 04-05 Comp G's had 3.29 final ratios.

Originally Posted by BillBoost37

1.121 gear ratio at the chain on the driverside combined with a 3.29 diff = 2.93 overall ratio (Any 3.8L SC)
1.000 gear ratio at the chain combined with 3.29 diff = 3.29 overall ratio (GT NA's)
1.000 gear ratio at the chain combined with 3.05 diff = 3.05 overall ratio (Regal NA's, some other buicks as well)
92-95ish you could also get a Bonneville/LeSabre with a 2.86 ratio.

Ah. Thanks, Bill.