1/2 ton to either 3/4 or 1 ton swap - The 1947 - Present Chevrolet & GMC Truck Message Board Network

tedbick · 02-24-2006, 06:50 PM

i have a 1977 k 10 and would like to swap to stronger rears what exactly needs to be swapped out to do this?and what are the best rears out there that came stock

stan79chevy · 02-24-2006, 07:53 PM

the best would be a d60 front and 14bolt ff rear out of a one ton. a more cost effective swap would be an 8 lug 10 bolt front and a 14bolt ff rear out of a 3/4 ton. the 3/4 ton stuff is a direct bolt in. for the one ton stuff youll have to relocate the spring perches on the rear..the one ton frames are narrower i think..maybe wider...either way a 1 ton 14boltff has the perches 2-3 inches in or out from where they are on a 3/4 ton

stan

**Zoomad75** · 02-24-2006, 07:55 PM

3/4 ton 14bolt full floater....BOLT IN. Simply the best/beefy axle you could put in there for the rear axle. Front would be a Dana 60. Stock in K30's but you also need to get the spring plates with the axle because they are different than the 1/2 and 3/4 ton stuff. Oh and stick with the single rear wheel width stuff (front and rear) unless you want to run H1 beadlocks. The dually front axle has a different front track width (hubs out). 1 ton 14 bolts have the spring mounts in a different spot than the 1/2 and 3/4 tons so unless you want to burn new mounts on find a 3/4 ton version. Both 3/4 and 1 ton full floater 14 bolts are 10.5" ring gears and are virtually identicle (except for the spring mounts)....3/4 ton 14's are just easier to swap.

*gn4u2c* · 02-28-2006, 01:47 PM

1 TON STUFF IS THE REAL DEAL. check my parts for sale post.

shelby987 · 03-02-2006, 12:49 PM

I know the 14bolt ff axle needs the spring perches moved, but can anyone shed some light on what you have to do to put a srw d60 into the front of your truck (specifically a 70 K20?)

b454rat · 03-02-2006, 06:04 PM

Unbolt yours, and bolt the 60 in. I had an 84 3/4 that I put a 60 in, and everything bolted in. As stated above, you will need the spring plates, the pass side is differnet. If anybody wants a 60, got 1 for sale.

02-24-2006, 06:50 PM	#1
tedbick Registered User Join Date: Feb 2006 Location: long pond,pa Posts: 51	1/2 ton to either 3/4 or 1 ton swap i have a 1977 k 10 and would like to swap to stronger rears what exactly needs to be swapped out to do this?and what are the best rears out there that came stock

02-24-2006, 07:53 PM	#2
stan79chevy Registered User Join Date: Sep 2003 Location: COVINGTON GEORGIA Posts: 477	Re: 1/2 ton to either 3/4 or 1 ton swap the best would be a d60 front and 14bolt ff rear out of a one ton. a more cost effective swap would be an 8 lug 10 bolt front and a 14bolt ff rear out of a 3/4 ton. the 3/4 ton stuff is a direct bolt in. for the one ton stuff youll have to relocate the spring perches on the rear..the one ton frames are narrower i think..maybe wider...either way a 1 ton 14boltff has the perches 2-3 inches in or out from where they are on a 3/4 ton stan __________________ 79 chevy k20 350/350/205/D44/14bFF 4.56 gears rock LWB pimer black 01 S-10 ZR2 extended cab 4.3/4L60E/233 3.73 gear 31" DICK CEPEK CRUSHERS

02-24-2006, 07:55 PM	#3
Zoomad75 K5Camper Join Date: Mar 2004 Location: Pueblo, CO Posts: 1,513	Re: 1/2 ton to either 3/4 or 1 ton swap 3/4 ton 14bolt full floater....BOLT IN. Simply the best/beefy axle you could put in there for the rear axle. Front would be a Dana 60. Stock in K30's but you also need to get the spring plates with the axle because they are different than the 1/2 and 3/4 ton stuff. Oh and stick with the single rear wheel width stuff (front and rear) unless you want to run H1 beadlocks. The dually front axle has a different front track width (hubs out). 1 ton 14 bolts have the spring mounts in a different spot than the 1/2 and 3/4 tons so unless you want to burn new mounts on find a 3/4 ton version. Both 3/4 and 1 ton full floater 14 bolts are 10.5" ring gears and are virtually identicle (except for the spring mounts)....3/4 ton 14's are just easier to swap. __________________ Rob Z. 1975 K5 350/465/205/D44/12b 4" lift on 35's- RIP 1991 K5 8.1L/NV4500/241/D44/14b FWC Camper

02-28-2006, 01:47 PM	#4
gn4u2c Account Suspended Join Date: Mar 2003 Location: southern pa Posts: 698	Re: 1/2 ton to either 3/4 or 1 ton swap 1 TON STUFF IS THE REAL DEAL. check my parts for sale post.

03-02-2006, 12:49 PM	#5
shelby987 Registered User Join Date: Mar 2005 Location: Just outside Durham, NC Posts: 894	Re: 1/2 ton to either 3/4 or 1 ton swap I know the 14bolt ff axle needs the spring perches moved, but can anyone shed some light on what you have to do to put a srw d60 into the front of your truck (specifically a 70 K20?) __________________ 1969 SS 350 Camaro Sold 2008 1970 3/4T K20, stock height with 33's, 250 I6, 3 on the tree, and locked front and rear 4.10's 1980 Chevy Malibu 2 dr Sold 2007 1993 Olds. Cutlass Ciera Wagon Traded 2006 2003 Saturn L200 w/5pd. D/D My list spans 5 decades with One common thread.....GM!

03-02-2006, 06:04 PM	#6
b454rat Senior Member Join Date: May 2004 Location: Binghamton, NY Posts: 3,469	Re: 1/2 ton to either 3/4 or 1 ton swap Unbolt yours, and bolt the 60 in. I had an 84 3/4 that I put a 60 in, and everything bolted in. As stated above, you will need the spring plates, the pass side is differnet. If anybody wants a 60, got 1 for sale. __________________ 2000 GMC CCSB 454/4L80 6” lift SAS 1999 Chevy CCSB 454/NV4500 4” SAS 1999 GMC Yukon 350/4L60 6" SAS



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