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| Durango_Boy | C4 Half Shafts - Questions | ||
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Elite Guru
 
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In regards to the C4 half shafts:
How many versions of the aluminum half shafts were there through the different model variations? Does anyone have a set they can measure for me? Length from joint center to joint center, diameter, and weight? Did the ZR1 have a heavier duty half shaft than the other models or did they all share the same half shaft. Does the half shaft use 1330 or 1350 joints? Thanks guys. |
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Posted on: 2013/12/14 18:36
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| joeld | Re: C4 Half Shafts - Questions | ||
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Can't help with length or weight, but the half shaft uses the 1350 series u-joint.
Joel |
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Posted on: 2013/12/14 22:01
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1989 Coupe,L98 automatic |
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| Durango_Boy | Re: C4 Half Shafts - Questions | ||
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Quote:
That's actually good, since my '77 half shafts use the same joint. |
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Posted on: 2013/12/14 22:04
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| Matatk | Re: C4 Half Shafts - Questions | ||
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84-96 all fit the same.
According to the parts fiche, there were actually two part numbers. I don't know why. 84-88 auto transmissions had a different part number that was later discontinued. 84-88 Auto Trans - 14046912 Everything else - 1223032 There are a few companies that have supposedly stronger shafts (aftermarket, cryo treated, etc) but Will drag raced all last season on stock shafts with no real problems. |
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Posted on: 2013/12/15 2:31
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2002 EBM convertible, Magnusson supercharger, cam, headers, etc. 1989 Corvette...RIP |
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| Durango_Boy | Re: C4 Half Shafts - Questions | ||
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Elite Guru
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I don't need anything super strong, but I figured if the same shaft was used on base cars and ZR1s then it wouldn't matter which year or model I got...they would all be the same. Mainly I just want the lighter aluminum shaft, and while I will have to shorten them, I like that, near as I can tell, they use the same 1350 joint as my C3 half shafts.
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Posted on: 2013/12/15 3:13
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| bogus | Re: C4 Half Shafts - Questions | ||
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yup. 1350 joint... I don't have a length spec, tho... I can get it, I need to crawl under there next weekend and do brakes and such.
These are quite light, actually. If you need some, get a set from vette2vette.com, his used prices will be very attractive. |
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Posted on: 2013/12/15 5:40
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The single biggest problem with communication is the illusion that it has taken place. - George Bernard Shaw Education is the best tool to overcome irrational fear. - me |
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| Durango_Boy | Re: C4 Half Shafts - Questions | ||
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Elite Guru
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Quote:
Thanks. The measurements are far less important now. I've actually dug up a few folks who've done what I want to do. Shortening a set of C4 shafts for my C3. The weight differences seem to be worth the couple hundred it'll cost to have them shortened. I know they use the same joint so really I just have to take my stock shaft in with the C4 shafts, and he can measure from one to the other. I have no doubts the shaft will hold up fine to my non aggressive driving style. The project actually started out as a research job I was doing to see what it would take to put the aluminum D44 from the late C3 into my '77 to replace the iron unit. So far it's a mountain of fabrication that may not be worth the 30lbs. |
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Posted on: 2013/12/15 14:24
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| rklessdriver | Re: C4 Half Shafts - Questions | ||
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Senior Guru
 
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As stated all halfshafts from 1984-96 are for all purposes the same.
In fact I currently run an orginal 84 on the drivers side and a 95 on the right side of my race car. They are 18" long. 1350 U-Joints. Plenty strong for anything anyone wants to with IRS. I constantly see the know it alls on CF quip about how the factory alum half shafts are the weak link but thats nonsense. I crush the needles out of the U-Joints before anything. The only time I have ever had to replace halfshafts is after a U-Joint failed. Will |
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Posted on: 2013/12/15 17:44
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1984 Corvette. 434 SBC with a Powerglide. Best pass - 8.48@160MPH 1.23 60ft on MT 275/60R15 Radials. 1972 Corvette. LS5 454 BBC with M20 4 speed. Best Pass - Doing good to just pass a gas station. |
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| bogus | Re: C4 Half Shafts - Questions | ||
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Grand Imperial Pooh-Bah
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You have another option... the later 79 or 80 C3 came with a lighter rear end... All aluminum with the first composite leaf. Don't you have that Shark Bite thing in the rear? |
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Posted on: 2013/12/15 20:11
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The single biggest problem with communication is the illusion that it has taken place. - George Bernard Shaw Education is the best tool to overcome irrational fear. - me |
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| BrianCunningham | Re: C4 Half Shafts - Questions | ||
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Senior Guru
 
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I know early ZR1's had STEEL halfshafts.
They were a lot stonger. Denny's can make you ones that are even stronger. The stubaxles are the next to break I have some 32 spline stubaxles made up, stock is 26 |
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Posted on: 2013/12/15 22:47
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Polo Green 95 LT1 6-spd http://mysite.verizon.net/vzevcp74/ 383 LT1/Vortech Supercharger/AFR heads/Rod end suspension/Penske-Hardbar dual rate coilovers/Wilwood 6pot brakes NCCC Governor: http://BayStateCorvetteClub.com |
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| Durango_Boy | Re: C4 Half Shafts - Questions | ||
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Elite Guru
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Quote:
This whole quest started because I began researching putting a late C3 aluminum diff in my '77, to replace the iron unit. The 40lb difference is quite attractive. Still figuring out if the diff will work without major mods, but even still, I would have to use late C3 half shafts and axle flanges to make the rear end work...which ironically uses 1330 yokes. I wouldn't have wanted to use an adapter joint, so I looked into late C3 half shafts, and then I naturally thought...if I don't end up putting in the aluminum diff, I will at least get a set of C4 half shafts, have them sized to match my car, and shave off a few lbs that way at least. I do in fact have shark Bite, and LOVE it. |
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Posted on: 2013/12/15 23:06
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| vetteoz | Re: C4 Half Shafts - Questions | ||
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Senior Guru
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I agree. My lowly 12 sec auto on DR's took out the needles but some had had HS failures  |
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Posted on: 2013/12/16 10:53
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