85 driveshaft in 71 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

mikegi · 05-19-2005, 06:26 PM

I put a 85 chevy truck driveshaft in my longbed,did'nt know how it would work but it seems to be real good.I cut the cross member straight down (I had an extra crossmember just in case)and changed the u joint in the back.anyone else do this,it working real good.the driveshaft fit nice and its for a 350 th.no vibration at any speed.

Cat Fuzz · 05-19-2005, 06:35 PM

Is it one piece?

Stano · 05-19-2005, 11:46 PM

I did the same thing on my 67 when I had the TH350 in it, worked good for me too. I think the shaft I used was out of a 75 tho.

mikegi · 05-20-2005, 05:16 AM

yes one piece

71cadc10 · 05-20-2005, 05:39 PM

haven't done this yet, but plan to use one. You cut the cross member open at the bottom correct, to get it in / out ?
I was thinking of cutting like that and then making a lower section that would bolt in to tie it back together and act as kind of a driveshaft loop.

thanks

mikegi · 05-20-2005, 07:40 PM

had to cut,driveshaft would hit.i think the crossmember could be moved forward.good idea welding a loop.

05-19-2005, 06:26 PM	#1
mikegi Registered User Join Date: Jun 2000 Location: Springvale,Maine Posts: 201	85 driveshaft in 71 I put a 85 chevy truck driveshaft in my longbed,did'nt know how it would work but it seems to be real good.I cut the cross member straight down (I had an extra crossmember just in case)and changed the u joint in the back.anyone else do this,it working real good.the driveshaft fit nice and its for a 350 th.no vibration at any speed. __________________ Springvale,Maine 71 3/4 GMC lwb

05-19-2005, 06:35 PM	#2
Cat Fuzz My son, my joy. Join Date: Sep 2003 Location: Spokane WA Posts: 463	Is it one piece? __________________ '69 Chevy 3/4 ton, 327cid, Carter AFB, Edelbrock intake, HEI, TH400. Founding member of the No Money To Spend On My Truck Club. When your at Home Depot, you WISH you had gotten an 8 foot bed!

05-19-2005, 11:46 PM	#3
Stano Registered User Join Date: Jul 2000 Location: Mo Posts: 963	I did the same thing on my 67 when I had the TH350 in it, worked good for me too. I think the shaft I used was out of a 75 tho. __________________ New daily driver 96 Chevy K3500 crew cab dually 53,000 miles 350 Vortec 4L80 Nice ride 67 Chevy C-10 LWB Built 350 TH-400 Wifes ride and family rig: 2001 Furd Expedition 5.4 Liter Kickin back in Rolla,Mo. USA "Do the thing you fear most and the death of fear is certain" Mark Twain

05-20-2005, 05:16 AM	#4
mikegi Registered User Join Date: Jun 2000 Location: Springvale,Maine Posts: 201	yes one piece __________________ Springvale,Maine 71 3/4 GMC lwb

05-20-2005, 05:39 PM	#5
71cadc10 Registered User Join Date: Apr 2004 Location: Boiling Springs, PA Posts: 435	haven't done this yet, but plan to use one. You cut the cross member open at the bottom correct, to get it in / out ? I was thinking of cutting like that and then making a lower section that would bolt in to tie it back together and act as kind of a driveshaft loop. thanks __________________ 71 C10 long bed, 2003 6.0L, 06GTO E40, T56, 12bolt 4.10 rear

05-20-2005, 07:40 PM	#6
mikegi Registered User Join Date: Jun 2000 Location: Springvale,Maine Posts: 201	had to cut,driveshaft would hit.i think the crossmember could be moved forward.good idea welding a loop. __________________ Springvale,Maine 71 3/4 GMC lwb



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