Driveshaft and Half shaft restoration?

[William G.]

Who is doing drive shaft and half shaft restoration to NCRS standards? Thanks, Bill Gould

[Dave S.]

Re: Driveshaft and Half shaft restoration?

Who is doing drive shaft and half shaft restoration to NCRS standards? Thanks, Bill Gould

i believe Mike Zamora is doing them. They look great from what I have seen. If you are on any sort of budget you might need to consider another option.

[Ron G.]

Re: Driveshaft and Half shaft restoration?

Bill, contingent upon what engine is in your Corvette, ( all from 1965 through 1972) if it is fuelie, 365, big blocks, LT-1 they had their hot shafts shot peened to relieve the stress of their welds because of the torque of the high-performance engines. They were shot peened with a number (31) shot. I know of a company in east Hartford, CT that does a great job.

[Michael B.]

Re: Driveshaft and Half shaft restoration?

Ron,

Were the half shafts in base engine, automatic transmission cars shot peened also? Our JG states that base engine cars used U-bolts to fasten the half shafts to the differential yoke but I know for a fact that base engine/automatic 1971 and 1972 cars used the blocks just like the BB's and LT-1's.
The half shafts in my base engine/auto car look identical to my LT-1.

I suspect these were shot peened but I'm curious if you know for certain?

Thanks,

Mike

[Ron G.]

[Joe L.]

Re: Driveshaft and Half shaft restoration?

i believe Mike Zamora is doing them. They look great from what I have seen. If you are on any sort of budget you might need to consider another option.

Dave------

I don't think anyone could restore the exact original finish of any Corvette driveshaft or non shot-peened half shafts.

[Joe L.]

Re: Driveshaft and Half shaft restoration?

Ron,

Were the half shafts in base engine, automatic transmission cars shot peened also? Our JG states that base engine cars used U-bolts to fasten the half shafts to the differential yoke but I know for a fact that base engine/automatic 1971 and 1972 cars used the blocks just like the BB's and LT-1's.
The half shafts in my base engine/auto car look identical to my LT-1.

I suspect these were shot peened but I'm curious if you know for certain?

Thanks,

Mike

Mike-----

1968-74 base engine cars used non shot-peened half shafts, manual or automatic transmission.

1969 L-46 and 1970-72 LT-1 MAY have used shot-peened half shafts; I can't confirm but I suspect that at least LT-1 did use shot-peened shafts.

1973-74 L-82 used shot-peened shafts.

Is it possible that any particular Corvette scheduled to receive non shot peened shafts actually received the shot-peened avriety? Of course.

Stub axle type (cap or u-bolt) is related to the installed differential carrier assembly and unrelated to the type of half shaft used.

[Terry M.]

Re: Driveshaft and Half shaft restoration?

1969 to 1972 M40 were supposed to get shot peened (with cap) half shafts. I think 1968 falls in there also, but I am not so sure of that. Of course, as Joe points out, they would have the HD differential.

[Joe L.]

Re: Driveshaft and Half shaft restoration?

1969 to 1972 M40 were supposed to get shot peened (with cap) half shafts. I think 1968 falls in there also, but I am not so sure of that. Of course, as Joe points out, they would have the HD differential.

Terry------


I'm not so sure. If you look at AIM sheet M40-A2 for 1968-72 you will note no reference to "differential and axle shafts". This implies that they are the same as production. (You will note such a reference for 1970-72 LT-1, though).

For 1973-74 the axle shafts installed differed only as a result of installed engine. L-48, regardless of transmission, received the non-shot-peened axle shafts; L-82 and LS-4, regardless of transmission, received the shot-peened axle shafts. I don't see why it would have been essentially any different for 1968-72.

Of course, with respect to any particular car, could shot-peened shafts have been originally installed instead of the standard variety? Of course. Such an upgrade probably wouldn't have even required engineering approval.

[Ron G.]

Re: Driveshaft and Half shaft restoration?

Joe,

Believe it or not, I actually have a little over 5' of what I believe is NOS drive/half shaft tubing. As you are probably aware, 71's had a larger diameter tube for the drive shaft than the 70's. The half shafts I believed used the same diameter as 1970.

[Joe L.]

Re: Driveshaft and Half shaft restoration?

Joe,

Believe it or not, I actually have a little over 5' of what I believe is NOS drive/half shaft tubing. As you are probably aware, 71's had a larger diameter tube for the drive shaft than the 70's. The half shafts I believed used the same diameter as 1970.

Ron-----


1963-70 driveshafts, except 1968-70 with M-40, were, nominally, 2" OD.

1968-70 driveshafts with M-40 and all 1971-79 were, nominally, 2-1/4" OD


1963-74 half shafts were, nominally, 2-1/2" OD

1975-79 half shafts were, nominally, 3" OD

[Michael B.]

Re: Driveshaft and Half shaft restoration?

I think I'll shot peen one half shaft and leave the other plain. Just kidding.

[Patrick H.]

Re: Driveshaft and Half shaft restoration?

I think I'll shot peen one half shaft and leave the other plain. Just kidding.

Depending on current condition, it's possible to distinguish between the two finishes.

[Terry M.]

Re: Driveshaft and Half shaft restoration?

Terry------


I'm not so sure. If you look at AIM sheet M40-A2 for 1968-72 you will note no reference to "differential and axle shafts". This implies that they are the same as production. (You will note such a reference for 1970-72 LT-1, though).

For 1973-74 the axle shafts installed differed only as a result of installed engine. L-48, regardless of transmission, received the non-shot-peened axle shafts; L-82 and LS-4, regardless of transmission, received the shot-peened axle shafts. I don't see why it would have been essentially any different for 1968-72.

Of course, with respect to any particular car, could shot-peened shafts have been originally installed instead of the standard variety? Of course. Such an upgrade probably wouldn't have even required engineering approval.

My observations are from looking at a whole bunch of Corvettes, but I haven't seen all of them; and I am pretty sure I won't live long enough to see them all, but I'll try.

[Joe L.]

Re: Driveshaft and Half shaft restoration?

My observations are from looking at a whole bunch of Corvettes, but I haven't seen all of them; and I am pretty sure I won't live long enough to see them all, but I'll try.

Terry-----


By the way, only the shot-peened half shaft was available in SERVICE from March, 1966 thru 1974. After that time, only the 1975+ half shaft was available for all 1963-74 SERVICE.