question, G body 7.5 rear life

[Dragsinger]

In a G body stocker weighing about 3200 with a 305 stocker package, running low 12's high 11's

Will the 7.5 gear give any service life?

[Bob Gullett]

50ft or 50 seconds which ever comes first! Spend the money once and put in a 12 bolt. Several manufactures offer a complete bolt in.

[Brian Fink]

If you are making decent horsepower and the suspension is up to the job,the 7.5 won't hold up. I thought a Grand National 8.5 would do the trick ;that piece failed after a few seasons .The answer is to do it right the first time with a 12 bolt and pro gears.

[Jeff Stout]

Yes to all above. Had a Firebird. It ran 13.60 and boom oatmeal in the rear end housing

[CMcAllister]

Axles and internal parts are all about the same money, save for the extra cost of pro gears. Put the best unit in it that you can from the beginning.

[Ralph A Powell]

Oldsmobile had a bolt in 12 for the G-boy racers. There are a few around if you know where to look.

[Mark Yacavone]

Originally Posted by Ralph A Powell

Oldsmobile had a bolt in 12 for the G-boy racers. There are a few around if you know where to look.

I give up ... Where do you look?

[Jeff Stout]

Originally Posted by Ralph A Powell

Oldsmobile had a bolt in 12 for the G-boy racers. There are a few around if you know where to look.

News to me. Any more details?

[SSDiv6]

Originally Posted by Ralph A Powell

Oldsmobile had a bolt in 12 for the G-boy racers. There are a few around if you know where to look.

None of the factory issued Oldsmobile Stock Eliminator cars had 12-Bolts in the cars. They all had 8.5 rear ends. Later on, a few switched to aftermarket 12-Bolt rear ends.

[SSDiv6]

Originally Posted by Dragsinger

In a G body stocker weighing about 3200 with a 305 stocker package, running low 12's high 11's

Will the 7.5 gear give any service life?

Find a 8.5 from a Grand National or 1984 to 1987 Olds 442 or an aftermarket 12-Bolt.