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Author Topic:   changing wheel bolt pattern
BnBracin
Dirt Roller

Total posts: 19
posted March 29, 2004 02:44 PM  
I was wondering if you guys could tell me how hard it would be to change the bolt pattern of a 1990 chevy corsica from 5x4-3/4 to 5x5? i just want to know how hard this would be because if i did this it would open my options for tires. anyway thatnks for anyone that has input.

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Chicks dig body damage!

19J
Dirt Freak

Total posts: 370
posted March 29, 2004 06:41 PM  
Well. There is more than one way to go about this. Option A. You can take off the rotor go to some professional and have him drill it out to be 5x5 like some do with nine inch axles. or B. you can take find a "donor" It would have to be an old caprice. Like the early 70's. Those are the non-metric i guess you could say and are 5x5. so you could just change the rotor or the spindle or the whole a arm to a arm assembly. It wouldnt be that hard i dont think.

racer17j
Dirt Forum Champ
Total posts: 5390
posted March 29, 2004 07:35 PM  
corsica is fwd and 5 on 5 is rwd and never the twain shall meet

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WesternAuto17
Dirt Forum Champ
Total posts: 569
posted March 30, 2004 08:19 AM  
The only way to do it would be to re drill the rotors, but you need to consider a few things.

First, you will really need to pay a machine shop to drill the holes. There's no way you'll be able to get them straight and true. Even if you can get the bolt pattern right, if the bolt circle is even a smijin off center, it wil shake you to death.

Second, a 5 on 5 wheel most likely will have 5/8" holes for the lugs. You might not have room on the rotors for lugs that big.

Finally, make sure its legal. A class that has a '90 Corsica in it sounds pretty stock. A lot of these kinds of classes don't allow this kind of a mod.

It seems that you will be money ahead to just buy some 4-3/4" rims and switch the tires.

BnBracin
Dirt Roller

Total posts: 19
posted March 30, 2004 01:20 PM  
But see what i was going to do was change them to a 5x5 so i could buy some steel rims that are 16" then i have a lot more selection on used tired, because no one uses 16 inchers. so that is why i would change it. And yes i it is totally legal to do it. but anyway thanks for all your opinions. I would like to hear more if anyone has ever done this before.

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Chicks dig body damage!

BnBracin
Dirt Roller

Total posts: 19
posted March 30, 2004 01:29 PM  
But see what i was going to do was change them to a 5x5 so i could buy some steel rims that are 16" then i have a lot more selection on used tired, because no one uses 16 inchers. so that is why i would change it. And yes i it is totally legal to do it. but anyway thanks for all your opinions. I would like to hear more if anyone has ever done this before.

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Chicks dig body damage!

BIGDADDYBOZ
Dirt Freak

Total posts: 466
posted March 30, 2004 04:47 PM  
I would make sure you have plenty of material because a front wheel drive flange isn't that big if you go to big on a bolt pattern it could get extremely weak.

BnBracin
Dirt Roller

Total posts: 19
posted March 30, 2004 06:17 PM  
Oh im sorry im sorry!! It is not a cevy corsica it is a chevy caprice. I got my cars mixed up. I knew that it wasnt rear wheel drive. thnks for that input and would like to hear more.

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Chicks dig body damage!

racer17j
Dirt Forum Champ
Total posts: 5390
posted March 30, 2004 06:21 PM  
I do it for alot of guys and get paid good money to do it. And as I always tell them, there are wheels made that brings the weight in so it reduces rotating weight and they cost good money, if you want me to spread it out again I can. Not worth it in my opinion but if you want to do it, any good machine shop can do it and I can see your point with more tire options but you will loose by spinning more weight than you will gain with more options on tires. 5/8" studs, wheels, redrilling, if you want to get rid of a few hundred bucks to save a few here and there it seems the way to go. But I have people do it everyday, my car is and will always be 5 on 4 3/4 though. Good luck.

boas51
Dirt Maniac

Total posts: 190
posted March 31, 2004 04:57 PM  
if it is an 80's caprice
the caprice/impala wagons are 5 on 5, same basic spindle. i am guessing the diffs will interchange also.
most 80's buick, olds, pontiacs are also 5 on 5.

flywheel
Dirt Full Roller

Total posts: 28
posted February 07, 2005 05:13 PM  
Paulson makes a rim that is 16" with a 5 x 4 3/4's. I cant remember the website. I will look around for it.

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