cant read axel codes

[SBCregal]

jack up the rear end, mark the wheel and driveshaft. rotate one of the wheels and count how many times the driveshaft rotates for one revolution of the tire...that'll give you a basic idea of the ratio


as for the posi/open diff question.... easy, nice big burnout....count the tire marks 🙂

 

[Cutty1]

understandin gears?

cause in the winter both tires would spen.. but if i have really low gear either 2.14 or 2.29 does the motor work harder since the gears arent equal with the motor if that makes since? also where is the sticker suppose to be that tells you RPO codes if it's on the door mine is missing i believe

 

[dan2286]

Re: understandin gears?

cause in the winter both tires would spen.. but if i have really low gear either 2.14 or 2.29 does the motor work harder since the gears arent equal with the motor if that makes since? also where is the sticker suppose to be that tells you RPO codes if it's on the door mine is missing i believe

The sticker is on the trunk lid.

 

[Blake442]

Re: understandin gears?

cause in the winter both tires would spen.. but if i have really low gear either 2.14 or 2.29 does the motor work harder since the gears arent equal with the motor if that makes since? also where is the sticker suppose to be that tells you RPO codes if it's on the door mine is missing i believe

The sticker is on the trunk lid.

His car is an '80 Cutlass, and RPO labels didn't come around until '84.

 

[dan2286]

Re: understandin gears?

cause in the winter both tires would spen.. but if i have really low gear either 2.14 or 2.29 does the motor work harder since the gears arent equal with the motor if that makes since? also where is the sticker suppose to be that tells you RPO codes if it's on the door mine is missing i believe

The sticker is on the trunk lid.

His car is an '80 Cutlass, and RPO labels didn't come around until '84.

I did not know that 😳

 

[85 Cutlass Brougham]

The easiest way to know for sure is to pull the diff cover and read the numbers stamped on the ring gear. There will be a ratio of the number of teeth on the ring gear and the number of teeth on the pinion. Divide the bigger number by the smaller one in a calculator to get the ratio.

 

[omegaman211]

cany read axle codes

look on the pass. side tube front side codes are usually about 1/3 in from the brake backing plate. Also usually upside down , dont know why.

 

[Cutty1]

no posi 🙁

well jacked the rear up and the out come it's an open rear... bumbed out wanted a posi... but since it had the 260 i knew 85% that it wasnt going to be posi anyway, as far as the gear ratio i didnt mark it to find out but since it's not posi then that means i have 2.14 gear

 

[Cutty1]

posi carrier?

well jacked the rear up and the out come it's an open rear... bumbed out wanted a posi... but since it had the 260 i knew 85% that it wasnt going to be posi anyway, as far as the gear ratio i didnt mark it to find out but since it's not posi then that means i have 2.14 gear

would i be able to just get used posi carrier and put it in instead of getting new rear end when i just sunk 500$ to