What year axles are interchangable? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

2wdBlazer · 09-12-2003, 03:55 PM

1. I am in need of a front disk 8 lug front end. (rear is already 3/4 ton) What years can I get this off of?

2. What are the highest (numercally) gears available in stock form? I priced around some shops and I was quoted $2K to change the front and rear to 4:56 from 3:73!! Holy crap!! I would like to find the right gears in the axle i buy and only have to change the rear gears if possible. (Dream on right).

Thanks.

leadfoot067 · 09-12-2003, 11:56 PM

you can use any 73-88 truck or 73 to 91 suburban front end...if you wanna dana 44 then they ran from 73 to 77ish or so...then gm switched to 10 bolts...either will bolt in just fine...

**JIMs70GMC** · 09-14-2003, 12:01 AM

The only difference will be the brake line banjo fitting changed from standard to metric in the late 70s. Should be able to find 4.10s, harder to find 4.56s.

09-12-2003, 03:55 PM	#1
2wdBlazer The Blazer King Join Date: Sep 2000 Location: Valrico, Fl (Tampa) Posts: 1,212	What year axles are interchangable? 1. I am in need of a front disk 8 lug front end. (rear is already 3/4 ton) What years can I get this off of? 2. What are the highest (numercally) gears available in stock form? I priced around some shops and I was quoted $2K to change the front and rear to 4:56 from 3:73!! Holy crap!! I would like to find the right gears in the axle i buy and only have to change the rear gears if possible. (Dream on right). Thanks. __________________ 72 2wd Blazer. Its the superbichinest, megacoolinest, superflowinest.

09-12-2003, 11:56 PM	#2
leadfoot067 horsepower junkie Join Date: Aug 2003 Location: graham, washington Posts: 326	you can use any 73-88 truck or 73 to 91 suburban front end...if you wanna dana 44 then they ran from 73 to 77ish or so...then gm switched to 10 bolts...either will bolt in just fine... __________________ 67 short wide box,350/700r4/3.73posi 71 olds cutlass "S" mom bought new..12.30s@113MPH

09-14-2003, 12:01 AM	#3
JIMs70GMC user # 2756 Join Date: Jun 2001 Location: Chesapeake, Virginia Posts: 4,612	The only difference will be the brake line banjo fitting changed from standard to metric in the late 70s. Should be able to find 4.10s, harder to find 4.56s. __________________ 1970 K25, 8' stepside bed 350/465/205 44 up front, 60 in the rear 4.10s rolling on 33" Dunlop MTs 1986 K5, 350/465/208 Dana 60/14 bolt from a cucv 36" Super Swampers TSL/SX 1983 K20 w/ CUCV axles, 350/700R4/208 sitting on 37" Goodyears 1986 M1031 6.2 diesel, TH400/NP205 locker in the rear and a LS in the front, all stock for now..... 1986 K30, 350/400/205 dana 60 and 14 bolt. I kept the drivetrain. Body/bad and chassis are gone. 1981 K30, 350/465/205 dana 60 and dually 14 bolt. Has a G80, and a flat bed. Going to replace the flat bed. 1985 K20, 350/400/208 10 bolt and SF 14 bolt. I wonder where I can find some 1 tons. Hmmmmm



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