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Old 02-28-2002, 04:50 PM
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Post driveshaft

Hey,

I jsut got into my s-10 blazer v8 conversion, and my driveshaft is gonn aend up beign like 2 inches short..... Is there any way to easily lengthen it with liek a lognmer yolke or something... I don;t want the expense of having a new one made or having muine lengthened

also, i m using a turbo 350. Shpoudl the yopke go in? or is it liek a differnte spline thing or something (sorry i dont; klnow much about this subject)

also, would it be possible to change the tailshadft ofn the th350 from a 6" to 9".... if it were 9 in., supposedly teh driveshaft would work fine, but its a 6"

thanks,
Jordan

[ February 28, 2002: Message edited by: oldcarguy85 ]

[ February 28, 2002: Message edited by: oldcarguy85 ]</p>

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Old 03-11-2002, 09:04 AM
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Economical IDEA! First you cant just change the tail housing length to a longer one, because the out put shaft on trans will be TOO SHORT! BEST SUGGESTION! If you already have the correct splined yoke or not, measure total lenght of drive shaft needed, Go to auto salvage yard. Tell them your looking for a drive shaft to fit to your project, they should have a selection of drive shafts for 350 trans' laying around,you'll probably find one in the length your looking for, possibly one from a van, if not the other option is to get the 350 yoke and just loof for a shaft that is acceptable length and get trange u-joints for the application. "NOTE" If your original drive shaft was ALLUMINUM stick with that,IF IT WAS STEEL SICK WITH THAT, AS CHANGING CAN RESULT IN NASTY VIBRATION, IF YOU MATCH A YOKE TO OTHER SHAFT "GET IT BALANCED BEFORE YOU INSTALL IT!


NOVA JEFF
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Old 03-11-2002, 09:23 AM
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Cool

My S10 has a 2 piece drive shaft. Does yours? If all you need is the front portion replaced it would be a simple mater of geting a drive shaft from the salvage yard and having it cut down to fit. It should cost $25-$50 to have this done.

Good Luck
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Old 03-12-2002, 11:52 AM
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its a 2wd blzazer, so its got a single piece driveshaft
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Old 03-12-2002, 02:44 PM
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Ok i got another question....

does anybody know of a website or anythng that has lengths of gm driveshafts.;. i need one that is 58" long.. and seeign how there are no good junkyards aroudn here i gotta give tehm the application... tehy can;t just look up a driveshaft length for me.....
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Old 03-13-2002, 04:40 AM
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If your doing a swap the price of a shaft is cheap.Around here 200-250 gets you a brand new shaft with a brand new yoke brand new u-joints built to your exact length.The thing is balanced and ready to go. I have seen the cheap way(home brew shafts that work some what ,but when you replace with a quality shaft the vehicle takes on a whole new life) Your only option is to look at shafts in the wrecking yard or go buy a shaft. I know someone will come here and tell you they have shortened longer shafts before,but for everyone that worked i have seen dozens that dont.Vibrations ,breakage(takes the floor,rear,tranny or all 3 with it)Get the tape measure out !!!
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Old 03-19-2002, 09:10 PM
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Take your old shaft to any machine shop, cut out the yoke ends and make your custom shaft out of a good straight piece of seamless mechanical tubing of the correct diameter. I done it a hundred times and as long as shaft dials out straight and the ends were trued and the yoke stubs welded in on the lathe-straight you won't have to balance anything unless you plan to run at Bonneville. Total runout on your new shaft should not be more than 0.002", I have seen factory thin wall tubing driveshafts runout 0.045". That is why they have to be balanced. Remember the yoke stubs must be in the same plane or you will have one hell of a vibration from the u-joints being out of time.
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