76 3/4 rear axle question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

O'l Buck · 01-23-2003, 03:11 AM

Does anybody know what GM called the corporate rear axle in the mid 70's C-20? I bought one today for my Rocket powered f@rd......Full floater, bolt in pinion housing, 3.73 gears, weighs about 400 pounds i think.........frickin' heavy. I gave $175 for it delivered to my barn drum to drum, brake lines, cables and all.

Beast388 · 01-23-2003, 10:16 AM

That would be a 14 bolt full-floater......a very strong, durable axle.

O'l Buck · 01-23-2003, 12:13 PM

Yeah, it should take everything the rocket 350 can dish out, and then some. I have a couple friends that are using them in Jeeps for rock crawling, powered with fuel injected 350's and Th-400's. Standing up on end and hopping, climbing 4' walls, etc, etc........they haven't ripped one up yet.

Mudder · 01-23-2003, 12:45 PM

And you can do a disk brake swap on the back pretty cheap.

O'l Buck · 01-23-2003, 03:04 PM

This thing is gonna be a "plow horse". I got a cammed up Olds 350 that came out of a stock car in a trade, along with the Th-350 with a shift kit. I figure that 350 oughta like the 3.73's pretty good, and it a 49 F@rd 1 ton, should look pretty cool pulling the boat to the lake. I'm using the brake pedal and master cylinder/booster from my junk 87 k-10, along with all updated wiring from various cars. Now all I need to do is bolt the axle under it and have a driveshaft made for it. The motor is in and bolted down. I'm not real sure what I want to do for steering yet, gotta do some measuring. I have a rack and pinion set up from a 91 lumina van, but I'm not sure it's gonna be stout enough to turn a stock 49 1 ton front axle with an Oldsmobile sitting on top of it. I'm hopeing to have it running and driving for summer so I can take it up to the Mason City tractor pull and hook it to the sled. This old dog's gonna be alot of fun. So who made the axle for GM anyway?.....eaton, dana, rockwell?.......I havent' taken time to look at it much because it's frickin' cold out there.

MAC67 · 01-23-2003, 09:25 PM

yeah bud youve got in my book the best of the best,,its a 14 bolt corp. kinda rare havin a set of 3:73's in it,,,for the price you paid id say you got a heck of a deal..itthose rear ends with me rank right up there with the eatons from the earlier chevys and pam andersons,,,ha ha ha

LET ER RIP TATER CHIP,,,

01-23-2003, 03:11 AM	#1
O'l Buck Recovering Truck Driver Join Date: Mar 2002 Location: Orleans, NE USA Posts: 1,883	76 3/4 rear axle question Does anybody know what GM called the corporate rear axle in the mid 70's C-20? I bought one today for my Rocket powered f@rd......Full floater, bolt in pinion housing, 3.73 gears, weighs about 400 pounds i think.........frickin' heavy. I gave $175 for it delivered to my barn drum to drum, brake lines, cables and all. __________________ 67 K-20 350, SM465, Eaton rear, 4.56 no spin option 00 Dodge 2500 4x4, 24V cummins, 5 speed Chad South Central Nebraska

01-23-2003, 10:16 AM	#2
Beast388 Suburbans RULE! Join Date: Jan 2000 Location: Clinton, IA 52732 Posts: 689	That would be a 14 bolt full-floater......a very strong, durable axle. __________________ --Ben 71 GMC Suburban 4X4 The "Beast" 388 CID Stroker, TH350, NP205, 8-lug D44, 14BFF w/ Detroit, 4.10:1 gears, 4-Wheel Disks 4" Lift, 35" MT/R's.

01-23-2003, 12:13 PM	#3
O'l Buck Recovering Truck Driver Join Date: Mar 2002 Location: Orleans, NE USA Posts: 1,883	Yeah, it should take everything the rocket 350 can dish out, and then some. I have a couple friends that are using them in Jeeps for rock crawling, powered with fuel injected 350's and Th-400's. Standing up on end and hopping, climbing 4' walls, etc, etc........they haven't ripped one up yet. __________________ 67 K-20 350, SM465, Eaton rear, 4.56 no spin option 00 Dodge 2500 4x4, 24V cummins, 5 speed Chad South Central Nebraska

01-23-2003, 03:04 PM	#5
O'l Buck Recovering Truck Driver Join Date: Mar 2002 Location: Orleans, NE USA Posts: 1,883	This thing is gonna be a "plow horse". I got a cammed up Olds 350 that came out of a stock car in a trade, along with the Th-350 with a shift kit. I figure that 350 oughta like the 3.73's pretty good, and it a 49 F@rd 1 ton, should look pretty cool pulling the boat to the lake. I'm using the brake pedal and master cylinder/booster from my junk 87 k-10, along with all updated wiring from various cars. Now all I need to do is bolt the axle under it and have a driveshaft made for it. The motor is in and bolted down. I'm not real sure what I want to do for steering yet, gotta do some measuring. I have a rack and pinion set up from a 91 lumina van, but I'm not sure it's gonna be stout enough to turn a stock 49 1 ton front axle with an Oldsmobile sitting on top of it. I'm hopeing to have it running and driving for summer so I can take it up to the Mason City tractor pull and hook it to the sled. This old dog's gonna be alot of fun. So who made the axle for GM anyway?.....eaton, dana, rockwell?.......I havent' taken time to look at it much because it's frickin' cold out there. __________________ 67 K-20 350, SM465, Eaton rear, 4.56 no spin option 00 Dodge 2500 4x4, 24V cummins, 5 speed Chad South Central Nebraska

01-23-2003, 12:45 PM	#4
Mudder Registered User Join Date: Feb 2001 Location: East Central, MO Posts: 11,336	And you can do a disk brake swap on the back pretty cheap.

01-23-2003, 09:25 PM	#6
MAC67 " SHOW ME" Join Date: Jan 2003 Location: shelbyville illinois Posts: 2,624	yeah bud youve got in my book the best of the best,,its a 14 bolt corp. kinda rare havin a set of 3:73's in it,,,for the price you paid id say you got a heck of a deal..itthose rear ends with me rank right up there with the eatons from the earlier chevys and pam andersons,,,ha ha ha LET ER RIP TATER CHIP,,,



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.