Drive shaft questions any input. - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**blazercrazy70** · 01-24-2016, 06:01 PM

I have a long bed I am getting ready to do a swap on. I am running a 4l60e will the original drive shaft work without changing the input shaft. Would rather run a one piece but sounds as if that could be a problem. Take suggestions

jweb · 01-25-2016, 12:34 AM

My truck is older but the driveline from my th350 had to be shortened since the 4l60 is longer. The input shaft was the same though.

BR3W CITY · 01-25-2016, 01:50 AM

If your running a th350 now, the 4l60e output will match up, but I warn people against making the driveshaft a high priority. Your better off doing the swap the way you want it and having a shaft built to match....instead of setting the build around reusing an older part.

Is your original shaft a 2piece, or was there another reason you wanted to re-use the old shaft?

Keith Seymore · 01-25-2016, 07:44 AM

Quote:

Originally Posted by BR3W CITY

... but I warn people against making the driveshaft a high priority. Your better off doing the swap the way you want it and having a shaft built to match....instead of setting the build around reusing an older part.

Agree wholeheartedly (said better than I have been able to do it).

K

**blazercrazy70** · 01-26-2016, 01:20 PM

It is a two piece. I.would.rather.have a one piece but some.have said that is to long for a one piece and it may.hit the.crossmember

MalibuSSwagon · 01-26-2016, 01:58 PM

Not necessarily. Make the driveshaft a larger diameter if it is longer

brad_man_72 · 01-26-2016, 02:04 PM

I've built a dozen or so one piece shafts for lwb 67-72s
Not a good idea at stock height w trailing arms. Or if you are laying frame on 24"s. Put the engine and trans as far back as you can if you're worried about length.

**blazercrazy70** · 01-26-2016, 02:15 PM

It is dropped 4" in the rear.

Andy4639 · 01-26-2016, 02:58 PM

My 71 LWB has the 4l80e in it with a 1 piece drive shaft and it has a 3" up front drop and 4" out back. No problems so far in 2 years of driving it.

01-24-2016, 06:01 PM	#1
blazercrazy70 Senior Member Join Date: Sep 2006 Location: illinois Posts: 516	Drive shaft questions any input. I have a long bed I am getting ready to do a swap on. I am running a 4l60e will the original drive shaft work without changing the input shaft. Would rather run a one piece but sounds as if that could be a problem. Take suggestions

01-25-2016, 12:34 AM	#2
jweb Registered User Join Date: Apr 2010 Location: Oregon Posts: 1,183	Re: Drive shaft questions any input. My truck is older but the driveline from my th350 had to be shortened since the 4l60 is longer. The input shaft was the same though.

01-25-2016, 01:50 AM	#3
BR3W CITY meowMEOWmeowMEOW Join Date: Sep 2009 Location: MKE WI Posts: 7,128	Re: Drive shaft questions any input. If your running a th350 now, the 4l60e output will match up, but I warn people against making the driveshaft a high priority. Your better off doing the swap the way you want it and having a shaft built to match....instead of setting the build around reusing an older part. Is your original shaft a 2piece, or was there another reason you wanted to re-use the old shaft? __________________ *'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING* MY BUILD THE H8RDCPTR //\\ MY YOUTUBE CHANNEL REV J HD

01-26-2016, 01:20 PM	#5
blazercrazy70 Senior Member Join Date: Sep 2006 Location: illinois Posts: 516	Re: Drive shaft questions any input. It is a two piece. I.would.rather.have a one piece but some.have said that is to long for a one piece and it may.hit the.crossmember

01-26-2016, 01:58 PM	#6
MalibuSSwagon Registered User Join Date: Sep 2009 Location: Weare,NH Posts: 1,590	Re: Drive shaft questions any input. Not necessarily. Make the driveshaft a larger diameter if it is longer __________________ Eric 1992 Oldsmobile Custom Cruiser 1986 Chevrolet C10\|5.3L\|TKO600\|Shortbed\|Custom Deluxe 1983 Malibu Wagon\|TPI 305\|T5 5 speed\|3.73 non-posi

01-26-2016, 02:04 PM	#7
brad_man_72 the boat guy Join Date: Jul 2007 Location: springfield mo Posts: 2,339	Re: Drive shaft questions any input. I've built a dozen or so one piece shafts for lwb 67-72s Not a good idea at stock height w trailing arms. Or if you are laying frame on 24"s. Put the engine and trans as far back as you can if you're worried about length. __________________ 67, swb, fleet, tach, throttle, 5.3, 4l60e, 3.73's, fuel cell, 5 lug, p.d.b., 4-6 drop. great little truck 66, stevens drag/ski 18' silouette, 350, 2.02 doublehump heads. comp extreme marine 278 cam, vette 7 fin valve covers, old polished edelbrock intake, velvetdrive, casale v-drive, adj cavitation plate. 28, model a rpu project,

01-26-2016, 02:15 PM	#8
blazercrazy70 Senior Member Join Date: Sep 2006 Location: illinois Posts: 516	Re: Drive shaft questions any input. It is dropped 4" in the rear.

01-26-2016, 02:58 PM	#9
Andy4639 Old member Join Date: Jan 2002 Location: Liberty, & Garden City S.C. , U.S. Posts: 19,936	Re: Drive shaft questions any input. My 71 LWB has the 4l80e in it with a 1 piece drive shaft and it has a 3" up front drop and 4" out back. No problems so far in 2 years of driving it. __________________ 1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs.



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