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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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#17199 02/04/2002 2:49 AM | Joined: Jan 2001 Posts: 27 Member | | Member Joined: Jan 2001 Posts: 27 | I swapped out the torque tube and tranny in my 52 chevy coupe for 56 rear end and saginaw 4 speed today. The tranny was wet (at least a little bit)as was the rear, but I drained them and need to know how much to put back in each. Anybody know?
I plan to use 80/90 weight in each, any real benefit to the redline stuff or is it just a bunch of hoopla?
Chris | | |
#17200 02/04/2002 3:59 AM | Joined: Jan 2002 Posts: 72 Member | | Member Joined: Jan 2002 Posts: 72 | I, myself was wondering about quanities and viscosity for a 1947 chev, 4400 series 1&1/2 ton. And exactly is this redline stuff u spoke of? I dont know what a torque tube drive-line is, but I know that my drive-line is open, do u think that this has been changed out? It seems like I've heard many others comment about that too!
49' Chev, 3808 platform
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#17201 02/04/2002 4:52 AM | Joined: Aug 2000 Posts: 346 Shop Shark | | Shop Shark Joined: Aug 2000 Posts: 346 | Rear ends and manual transmissions usually call for lubricant to be added to the bottom of the fill hole. i.e. when it starts runnin' out, it's full!  Oops, a quick check of the shop manual says its should be 1/2" down from the filler when cold. At the bottom of the filler hole when at operating temperature. 1-1/2 and 2 ton trucks went to open driveshaft about 1941. 1-1/2 & 2 ton single speed rear end holds 12 pints of lube. 2-speed holds 14 1/2 pints. 4-speed transmission holds 6 pints. Both use S.A.E 90 "Multi-Purpose" gear lubricant.
'38 Chevy 1-1/2 ton
'49 Chevy 1/2 ton
'54 Chevy 6400 2 ton
'55.2 GMC 3/4 ton
'56 GMC 1-ton
No Room Left in Shop
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#17202 02/05/2002 3:33 AM | Joined: Jan 2002 Posts: 72 Member | | Member Joined: Jan 2002 Posts: 72 | do all rear-ends have drain plugs? :confused:
49' Chev, 3808 platform
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#17203 02/05/2002 5:39 AM | Joined: Aug 2000 Posts: 346 Shop Shark | | Shop Shark Joined: Aug 2000 Posts: 346 | Thad,
I'd guess most of them DON'T have drain plugs. I just checked all the rear ends in my shop and none of them have drain plugs (including my '38 1-1/2 ton). On rear ends with the rear cover, it's just a matter of pulling the cover off and letting it drain.
On the Corvette (same as 55-64 passenger), there isn't a rear cover so you either pull the axles and loosen the center section or NAPA sells a suction gun that you can use to remove most of the old lube. The gun also works for putting lube IN if the fill hole isn't accessible otherwise.
'38 Chevy 1-1/2 ton
'49 Chevy 1/2 ton
'54 Chevy 6400 2 ton
'55.2 GMC 3/4 ton
'56 GMC 1-ton
No Room Left in Shop
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#17204 02/05/2002 7:56 AM | Joined: Jan 2002 Posts: 72 Member | | Member Joined: Jan 2002 Posts: 72 | thanks Olblue, I thought I was just missin' it. Do u think that I can still find the replacement gasket if I remove the 10 bolt rear-end cover?
49' Chev, 3808 platform
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#17205 02/05/2002 9:48 AM | Joined: Feb 2001 Posts: 1,096 'Bolter | | 'Bolter Joined: Feb 2001 Posts: 1,096 | Thad , you could just take the bottom bolt out and leave it to drain out . It takes ages .
Then you save a gasket .
Taking the cover off , means you have a pattern on hand , (the cover) to cut your own gasket , an easy task , just take your time . | | |
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