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Drive shaft length needed

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xitabl442
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Drive shaft length needed

Postby xitabl442 on Tue Jul 12, 2011 8:13 pm

Hi guys,
My 700R4 went on strike this weekend on the way home from Goodguys in Columbus. It is now a two speed, since third and fourth are nowhere to be found. Fortunately my original 200R4 freshly rebuilt by Extreme is waiting to be reinstalled. My question is, what is the original length of my driveshaft before I cut it for the 700 transplant? I want to know so I can get one made before the trans goes in. I need to know if you are giving overall length or center-to-center of the u-joint. Another question, should I go with aluminum or steel. I have one of each, but both are too short.
Thanks in advance,
David
Live your life like an exclamation, not an explanation.

1986 Olds 442, 350 TPI from an '89 Vette. Original 200R4 back in, Aftermarket harness/computer chip, mid-length headers, custom 2.5 exhaust w/ x-pipe and side exit. Eibach springs all around, SC&C Stage 2+ front suspension, boxed rear suspension arms. Custom painted Coys C-67 wheels 17x8 fr, 17x9 rr.
59k miles, second owner.
Disassembled for paint.

Bweavy
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Re: Drive shaft length needed

Postby Bweavy on Tue Jul 12, 2011 9:22 pm

Lonnie built your trans? Good guy. I have a few I'll get you a measurement in the morning.

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Blake442
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Re: Drive shaft length needed

Postby Blake442 on Tue Jul 12, 2011 9:28 pm

Don't forget that the 442 and GN driveshafts are 1" shorter than other G-bodies because of the 8.5" rear.
'85 Oldsmobile 442--Olds 455-TH400
'83 Oldsmobile Cutlass Cruiser--Chevy 350-TH350
Past G's--'81 Regal, '84 El Camino, '79 Cutlass Supreme, '87 Cutlass Salon,
'81 Monte Carlo, '81 El Camino, '79 Malibu Wagon, '81 Century Estate Wagon

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xitabl442
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Re: Drive shaft length needed

Postby xitabl442 on Tue Jul 12, 2011 10:49 pm

Blake442 wrote:Don't forget that the 442 and GN driveshafts are 1" shorter than other G-bodies because of the 8.5" rear.

Did the GN and GNX have aluminum driveshafts? I am leaning toward the aluminum if the cost isn't too much.
Live your life like an exclamation, not an explanation.

1986 Olds 442, 350 TPI from an '89 Vette. Original 200R4 back in, Aftermarket harness/computer chip, mid-length headers, custom 2.5 exhaust w/ x-pipe and side exit. Eibach springs all around, SC&C Stage 2+ front suspension, boxed rear suspension arms. Custom painted Coys C-67 wheels 17x8 fr, 17x9 rr.
59k miles, second owner.
Disassembled for paint.

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JBreu
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Re: Drive shaft length needed

Postby JBreu on Tue Jul 12, 2011 11:01 pm

If you have the stock 7.5 rear then you would need 52 1/2" from center of U Joint to center of U Joint, and if you have the 8.5 then it's 51 1/2"!!! Here check this link out as well: http://www.montecarloss.com/community/u ... Post762415
1984 Monte Carlo with sbc 388 stroker ( dynoed 514hp) 700-r4 , 12 Bolt w/4:10
Old Chevy's Don't Die, They just get faster!
Best ET to date : 12.20 @110 Mph All Motor
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xitabl442
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Re: Drive shaft length needed

Postby xitabl442 on Wed Jul 13, 2011 5:43 am

JBreu wrote:If you have the stock 7.5 rear then you would need 52 1/2" from center of U Joint to center of U Joint, and if you have the 8.5 then it's 51 1/2"!!! Here check this link out as well: http://www.montecarloss.com/community/u ... Post762415

Thanks JBreu, looks like my drive shaft has been too short all along. I think I had it cut to 49" c-c. I'll have to get a price on the aluminum vs. steel and make my decision.
Thanks again
Live your life like an exclamation, not an explanation.

1986 Olds 442, 350 TPI from an '89 Vette. Original 200R4 back in, Aftermarket harness/computer chip, mid-length headers, custom 2.5 exhaust w/ x-pipe and side exit. Eibach springs all around, SC&C Stage 2+ front suspension, boxed rear suspension arms. Custom painted Coys C-67 wheels 17x8 fr, 17x9 rr.
59k miles, second owner.
Disassembled for paint.

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xitabl442
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Joined: Sat Jul 29, 2006 2:43 pm
Location: Saint Henry, Ohio

Re: Drive shaft length needed

Postby xitabl442 on Fri Jul 15, 2011 11:30 am

I just ordered an aluminum driveshaft at 51 1/2 c-c. I am wondering now though, is the length correct for the sbc i my car. I forgot about that. Did the 307 set in a different location?
Live your life like an exclamation, not an explanation.

1986 Olds 442, 350 TPI from an '89 Vette. Original 200R4 back in, Aftermarket harness/computer chip, mid-length headers, custom 2.5 exhaust w/ x-pipe and side exit. Eibach springs all around, SC&C Stage 2+ front suspension, boxed rear suspension arms. Custom painted Coys C-67 wheels 17x8 fr, 17x9 rr.
59k miles, second owner.
Disassembled for paint.

84cutlass383
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Re: Drive shaft length needed

Postby 84cutlass383 on Fri Jul 15, 2011 11:47 am

xitabl442 wrote:I just ordered an aluminum driveshaft at 51 1/2 c-c. I am wondering now though, is the length correct for the sbc i my car. I forgot about that. Did the 307 set in a different location?

how much for the aluminum driveshaft?

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xitabl442
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Re: Drive shaft length needed

Postby xitabl442 on Fri Jul 15, 2011 3:29 pm

84cutlass383 wrote:
xitabl442 wrote:I just ordered an aluminum driveshaft at 51 1/2 c-c. I am wondering now though, is the length correct for the sbc i my car. I forgot about that. Did the 307 set in a different location?

how much for the aluminum driveshaft?


$306.00. I put it on hold, they have it cut but not welded.
Live your life like an exclamation, not an explanation.

1986 Olds 442, 350 TPI from an '89 Vette. Original 200R4 back in, Aftermarket harness/computer chip, mid-length headers, custom 2.5 exhaust w/ x-pipe and side exit. Eibach springs all around, SC&C Stage 2+ front suspension, boxed rear suspension arms. Custom painted Coys C-67 wheels 17x8 fr, 17x9 rr.
59k miles, second owner.
Disassembled for paint.

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Blake442
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Re: Drive shaft length needed

Postby Blake442 on Fri Jul 15, 2011 7:03 pm

xitabl442 wrote:I just ordered an aluminum driveshaft at 51 1/2 c-c. I am wondering now though, is the length correct for the sbc i my car. I forgot about that. Did the 307 set in a different location?



SBC or SBO doesn't matter. The flange of the bellhousing will be in the same place.
As long as the trans is in the stock location, 51.5" is the length you need.
'85 Oldsmobile 442--Olds 455-TH400
'83 Oldsmobile Cutlass Cruiser--Chevy 350-TH350
Past G's--'81 Regal, '84 El Camino, '79 Cutlass Supreme, '87 Cutlass Salon,
'81 Monte Carlo, '81 El Camino, '79 Malibu Wagon, '81 Century Estate Wagon

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