1975 700r4 conversion question
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1975 700r4 conversion question
Hi
I currently working on a 700r4 conversion on my standard TH400 1975 Corvette. I'm almost done but missing the driveshaft. Unfortunately my local workshop are on vacation and not able to help me with shortening driveshaft until september. I might order shaft from denny driveshaft, but because they only use UPS express it would make the shipping $258 here to Sweden.
But I need to ask here if somebody know if it's possible to use the driveshaft from a 1982 700r4 standard Corvette?
If not, what will be main problem with using this shaft?
Many thanks for all advice I can get
Valle
I currently working on a 700r4 conversion on my standard TH400 1975 Corvette. I'm almost done but missing the driveshaft. Unfortunately my local workshop are on vacation and not able to help me with shortening driveshaft until september. I might order shaft from denny driveshaft, but because they only use UPS express it would make the shipping $258 here to Sweden.
But I need to ask here if somebody know if it's possible to use the driveshaft from a 1982 700r4 standard Corvette?
If not, what will be main problem with using this shaft?
Many thanks for all advice I can get
Valle
Burning Brakes
Joined: May 2007
Posts: 1,022
Likes: 33
From: Lokeren, Belgium
Hey,
I also did some reading while looking into a 82 driveshaft but I don't think they are interchangeable due to the different pumpkin design? Someone with more knowledge will jump in on this one.
But for what it's worth I bit the shipping cost bullet and bought a Denny's driveshaft and halfshafts. They are quality pieces without having to worry about out of balance due to shortening/welding. (at least in Belgium there's not really a shop which can do a decent job like this)
Nick
I also did some reading while looking into a 82 driveshaft but I don't think they are interchangeable due to the different pumpkin design? Someone with more knowledge will jump in on this one.
But for what it's worth I bit the shipping cost bullet and bought a Denny's driveshaft and halfshafts. They are quality pieces without having to worry about out of balance due to shortening/welding. (at least in Belgium there's not really a shop which can do a decent job like this)
Nick
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Ok, I guess your right. But the $258 in shipping is almost as much as the driveshaft itself and denny wont send it by USPS or any other than UPS even if I beg them to.. 
Anyways this is probably the best way to go....
I might send it via a forwarding company here to Sweden, like shopusa.com or jetcarrier... That will make the shipping a bit cheaper.
Thanks
Valle
Anyways this is probably the best way to go....
I might send it via a forwarding company here to Sweden, like shopusa.com or jetcarrier... That will make the shipping a bit cheaper.
Thanks
Valle
Safety Car
Joined: Mar 2007
Posts: 3,652
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From: Bridgewater nj
Any driveshaft shop should be able to shorten the shaft. 82 had the bigger universal joints that came on the 4 speed manual transmission vettes. I'm not sure if that included the drive shaft?
Last edited by hugie82; Jul 6, 2012 at 08:58 AM.
Team Owner
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From: Crossville TN
Since most vehicles in Europe/Scandanavia are front-wheel drive cars, there probably aren't any auto driveshaft shops. But, what about some farm tractor implement repair shops? They use driveshafts and have to repair them, I would think. They are the same kind of thing, if you can provide the yokes and U-joints.
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Yes, there are a few workshops in sweden who makes driveshafts. But they dont usually work on 2.5 inch tubes and i have to provide them with parts, yokes an ujoints.
There is one company here that might help me, but they are on vacation for 5 weeks.
/Valle
There is one company here that might help me, but they are on vacation for 5 weeks.
/Valle
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Thanks for all your recommendations. I have now decided to go with the dennys driveshaft solution.
I just wonder how exact the measurements need to be for the order. Do they the take any slack i consideration during manufacturing.
I've measured the overall length #B6 between trans case to pinion yoke. But I can't decide exact what to write in the order form. Maybe I'm a bit nervous about the shaft coming out wrong. Wouldn't wanna order one more due to inexact measurement.
The exact precise measurement I get tonight is 29.13 inches.
Two weeks ago when I measured it was 29.17 inches.
But to they substract some during production so it wont be to tight fit?
Or should I write 29 inches in the order to not make to tight/precise measurement.
As I said earlier..maybe I'm just worried for nothing. But I wouldn't want this to come out wrong. I'm thankful for all the help I can get.
/Valle
I just wonder how exact the measurements need to be for the order. Do they the take any slack i consideration during manufacturing.
I've measured the overall length #B6 between trans case to pinion yoke. But I can't decide exact what to write in the order form. Maybe I'm a bit nervous about the shaft coming out wrong. Wouldn't wanna order one more due to inexact measurement.
The exact precise measurement I get tonight is 29.13 inches.
Two weeks ago when I measured it was 29.17 inches.
But to they substract some during production so it wont be to tight fit?
Or should I write 29 inches in the order to not make to tight/precise measurement.
As I said earlier..maybe I'm just worried for nothing. But I wouldn't want this to come out wrong. I'm thankful for all the help I can get.
/Valle
Burning Brakes
Joined: May 2007
Posts: 1,022
Likes: 33
From: Lokeren, Belgium
Valle, I had 29.33" (745mm) but I'm sure your distance can be different. it's better to get in contact with them to be absolutely sure. I dug up one of the mails I had from Denny's, i hope it helps. Also be sure about the type of U'joint!
Nick
The dimension that we stated is in the middle between your shortest and longest two dimensions.* Most importantly...did you turn the pinion yoke horizontal when you measured?* If not the please do so and remeasure.* This is very important!*
*
From that overall we will build the shaft with the proper amount of slip travel, one inch, so that you can get the shaft installed easily.* Please understand that the overall length that you supply is what we base the actual center to center on.* In no way will we build a shaft that will not fit if your dimension is correct.** You are worried about something that is not necessary to worry about.* This is how we build custom shafts for modified vehicles.*
Nick
The dimension that we stated is in the middle between your shortest and longest two dimensions.* Most importantly...did you turn the pinion yoke horizontal when you measured?* If not the please do so and remeasure.* This is very important!*
*
From that overall we will build the shaft with the proper amount of slip travel, one inch, so that you can get the shaft installed easily.* Please understand that the overall length that you supply is what we base the actual center to center on.* In no way will we build a shaft that will not fit if your dimension is correct.** You are worried about something that is not necessary to worry about.* This is how we build custom shafts for modified vehicles.*
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Hi
Thanks for your reply. Made me a bit more confident.
But do they actually mean that the B6 overall length should be inbetween the shortest and longest measured length?
Because when i measure on top the value is 739mm and the lower measurement is 745mm. That would actually mean that they want a value inbetween , like 742mm ?
/Valle
Thanks for your reply. Made me a bit more confident.
But do they actually mean that the B6 overall length should be inbetween the shortest and longest measured length?
Because when i measure on top the value is 739mm and the lower measurement is 745mm. That would actually mean that they want a value inbetween , like 742mm ?
/Valle
Burning Brakes
Joined: May 2007
Posts: 1,022
Likes: 33
From: Lokeren, Belgium
Because the output shaft and the pinion are not in line with these cars they told me to measure the shortest and longest and indeed they took the average, and as you read, they deduct the required slip.
Nick
Nick
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Ok. Thanks!
I've sent a question to dennys about #B6.
But I really need to make the order tomorrow while I'm going on vacation myself. But if I dont get the answer I think i might send them two values on #B6 in the order and then they can do the calculation themself. Like:
#B6 shortest (top) = 739mm
#B6 longest (lower) = 745mm
But thanks for all your info!
/Valle
I've sent a question to dennys about #B6.
But I really need to make the order tomorrow while I'm going on vacation myself. But if I dont get the answer I think i might send them two values on #B6 in the order and then they can do the calculation themself. Like:
#B6 shortest (top) = 739mm
#B6 longest (lower) = 745mm
But thanks for all your info!
/Valle