71 455 olds 98 newbe perf questions
October 2nd, 2009, 09:02 AM
#1
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71 455 olds 98 newbe perf questions
hi guys thx for the site. my cousin has a 71 98 455 olds. 2 dr, he is looking to get gears for it or change the rear end out completely. he has 1 of the industrial rear ends, he was told u can get gears 342 from a certain year only to swap them out. can any body let me know where he can get a uaed set or what other complete rear end can he swap it out with. he has to stay with the same size lenght due to fender skirts and frame rails. 1 more question, any body have any hi perf motor parts for sale, cam lifters (rv) manifold, hei springs push rods. thx rob
October 2nd, 2009, 09:06 AM
#2
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71 Oldsmobile 98s are AWSOME! To find a rear end for that car will be a bit more difficult than finding one for a Cutlass. Any 98, Delta 88, or Custom Cruiser from 71-76 would swap in without modifications. He might want to check out a Custom Cruiser in a salvage yard, they were probably more likely to have a posi-traction rear end since they would be used for towing and hauling. Finding a good used part is the problem since the B/C bodies aren't as popular as the A body. I don't know of any aftermarket suppliers that do parts for these cars.
October 3rd, 2009, 04:44 AM
#4
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There are lot of gear sets that work in that rear end. If the only thing your going to do is race it I would go lower than 3.42 more like 3.73, but if your going drive it daily. I would rather have 3.08 or even 3.23 with a spool or a locker.
October 3rd, 2009, 07:21 AM
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We have a member who goes by Monzaz. He knows just about everything you would want to know about differentials, including the type O. Give him a shout if you need any more info or help.
October 4th, 2009, 04:16 PM
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His username is:
monzaz
Like Oldsguy said, he knows everything there is to know about differentials.
FWIW, I don't think you will be able to easily find gears for your 98. I don't believe you can swap gears from an A body into a B or C body. I think the differential is different.
BTW, If you put 3.73s into your 98 it will be a dog on the highway (and that is just sacrelige for a 98). If you want to race exclusively then you should look into buying an A body. B and C bodies are cool, they just aren't built to race. They are built for crusing.
monzaz
Like Oldsguy said, he knows everything there is to know about differentials.
FWIW, I don't think you will be able to easily find gears for your 98. I don't believe you can swap gears from an A body into a B or C body. I think the differential is different.
BTW, If you put 3.73s into your 98 it will be a dog on the highway (and that is just sacrelige for a 98). If you want to race exclusively then you should look into buying an A body. B and C bodies are cool, they just aren't built to race. They are built for crusing.
Last edited by Olds64; October 4th, 2009 at 04:22 PM.
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