4L60E aluminum driveshaft fitment - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Tim240Z · 03-04-2005, 07:58 PM

Sorry if this has been answered a bazillion times, guys....I wish the search feature was working.....
I have sitting in the bed of my 71 Cheyenne a 99 5.7L and 4L60E from a 'burb.
I also have the nice aluminum driveshaft from that same vehicle. Since the 4L is ~2" longer than my TH350, I will have to have my driveshaft shortened anyways. Is there a way to use the one piece aluminum shaft? I appears as though there would need to be some serious surgery to the center mount X-member for this to work.....anyone done this? Would I also have to lower the tranny mounting point to get a better driveshaft angle?
Thanks,
Tim

**smitty62** · 03-04-2005, 09:08 PM

I may be missing something but being made of aluminum doesn't enter in to it. Most of us run one piece steel driveshafts on SWB trucks--the two piece is nothing but trouble. BTW--But I'll give you $5 for that driveshaft!

Tim240Z · 03-04-2005, 10:41 PM

This is a LWB 3/4 ton Cheyenne 20 fleetside. As I look at the driveshaft from under the truck, the one piece looks as though it would hit the X-member where the center bearing is mounted. Is there a work around to that problem? Fabbing a new X-member isn't a problem, but maybe there is an easier way?

Tim240Z · 03-05-2005, 03:31 PM

Somebody must have done this......

Pretty please.....or am I on my own with this one?

**smitty62** · 03-05-2005, 04:02 PM

Sorry, I've never tried putting a one-piece in a long bed--but this will bump you up........
But if I was determined to use it, I'd modify the existing crossmember--or you could just stick it in and drive very slowly over uneven ground until you built some confidence it wasn't going to hit????

Tim240Z · 03-05-2005, 05:18 PM

Well....on closer inspection, the aluminum shaft has some dings...from the forklift at the yard I suspect.....I will just have the original shortened......
Tim

03-04-2005, 07:58 PM	#1
Tim240Z Senior Member Join Date: Jan 2005 Location: LAX area, So Cal Posts: 499	4L60E aluminum driveshaft fitment Sorry if this has been answered a bazillion times, guys....I wish the search feature was working..... I have sitting in the bed of my 71 Cheyenne a 99 5.7L and 4L60E from a 'burb. I also have the nice aluminum driveshaft from that same vehicle. Since the 4L is ~2" longer than my TH350, I will have to have my driveshaft shortened anyways. Is there a way to use the one piece aluminum shaft? I appears as though there would need to be some serious surgery to the center mount X-member for this to work.....anyone done this? Would I also have to lower the tranny mounting point to get a better driveshaft angle? Thanks, Tim __________________ 1972 Suburban C20 454/TH700R4, eaton-corporate 4.10 (looking for 3.7) Sold: 71 Cheyenne 20 Installed a 99 5.7L L31/4L60E from Suburban 1500 (2005)

03-04-2005, 09:08 PM	#2
smitty62 Registered User Join Date: May 2002 Location: North Carolina Posts: 1,234	I may be missing something but being made of aluminum doesn't enter in to it. Most of us run one piece steel driveshafts on SWB trucks--the two piece is nothing but trouble. BTW--But I'll give you $5 for that driveshaft! __________________ Stepsides look like real trucks! Smitty

03-04-2005, 10:41 PM	#3
Tim240Z Senior Member Join Date: Jan 2005 Location: LAX area, So Cal Posts: 499	This is a LWB 3/4 ton Cheyenne 20 fleetside. As I look at the driveshaft from under the truck, the one piece looks as though it would hit the X-member where the center bearing is mounted. Is there a work around to that problem? Fabbing a new X-member isn't a problem, but maybe there is an easier way? __________________ 1972 Suburban C20 454/TH700R4, eaton-corporate 4.10 (looking for 3.7) Sold: 71 Cheyenne 20 Installed a 99 5.7L L31/4L60E from Suburban 1500 (2005)

03-05-2005, 03:31 PM	#4
Tim240Z Senior Member Join Date: Jan 2005 Location: LAX area, So Cal Posts: 499	Somebody must have done this...... Pretty please.....or am I on my own with this one? __________________ 1972 Suburban C20 454/TH700R4, eaton-corporate 4.10 (looking for 3.7) Sold: 71 Cheyenne 20 Installed a 99 5.7L L31/4L60E from Suburban 1500 (2005)

03-05-2005, 04:02 PM	#5
smitty62 Registered User Join Date: May 2002 Location: North Carolina Posts: 1,234	Sorry, I've never tried putting a one-piece in a long bed--but this will bump you up........ But if I was determined to use it, I'd modify the existing crossmember--or you could just stick it in and drive very slowly over uneven ground until you built some confidence it wasn't going to hit???? __________________ Stepsides look like real trucks! Smitty

03-05-2005, 05:18 PM	#6
Tim240Z Senior Member Join Date: Jan 2005 Location: LAX area, So Cal Posts: 499	Well....on closer inspection, the aluminum shaft has some dings...from the forklift at the yard I suspect.....I will just have the original shortened...... Tim __________________ 1972 Suburban C20 454/TH700R4, eaton-corporate 4.10 (looking for 3.7) Sold: 71 Cheyenne 20 Installed a 99 5.7L L31/4L60E from Suburban 1500 (2005)



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