12 bolt vs Dana 60

Bench Racer · 07-28-2020, 09:25 PM

Quote:

Originally Posted by SSDiv6

...or a 7.17 ratio...

My Brother ran a Dana with 6:83 and a 2:75 low gear in IHRA Production with a 283c.i. 1958 wagon . The car was a tank at #3839 and low gear was a short ride lol, he shifted at 10,500 rpm. Never broke a gear in the Dana.

ImBack · 07-28-2020, 10:56 PM

My cousin has a '71 Chevelle it's a bracket car, weighs 2920 with a 555 CI,runs 550s in the eighth mile with a 12 bolt. He was only getting about a hundred runs out of a ring and pinion but switched to a 488 I believe has a larger pinion? It has a t a girdle on it and good axles and spool but it's nothing special.

07-28-2020, 10:56 PM	#2
ImBack Junior Member Join Date: Jan 2020 Posts: 27 Likes: 0 Liked 5 Times in 4 Posts	Re: 12 bolt vs Dana 60 My cousin has a '71 Chevelle it's a bracket car, weighs 2920 with a 555 CI,runs 550s in the eighth mile with a 12 bolt. He was only getting about a hundred runs out of a ring and pinion but switched to a 488 I believe has a larger pinion? It has a t a girdle on it and good axles and spool but it's nothing special.