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#1 |
Active Member
Join Date: Jun 2005
Location: Idaho
Posts: 263
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difference between a 78 front axle and a 72?
I have a friend of a friend who has a 1978 4x4 who got T-boned and totaled. He just had his front disc brakes totally re-built, tie rods etc. question I have is will this whole front end fit under a 72? what are the differences?
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#2 |
Post Whore
![]() Join Date: Feb 2000
Location: Rose Hill, KS, USA
Posts: 12,684
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Re: difference between a 78 front axle and a 72?
Yep, bolts right in. On my 70 K5 I put a 78 3/4 ton's front axle in and the only thing I had to modify was my front brake lines. I had swapped in the 78's power brake booster and needed adapters to mate it to the 70's front hard line and then I found I was going to need adapters to mate the hard line to the 78's rubber brake lines. I ended up just replacing the hard line so I wouldn't have all those adapter fittings.
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1970 Blazer with a 400 sbc and 4" lift 1980 Pontiac Trans Am, 455 Oldsmobile 2012 Kawasaki Concours 14 |
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#3 |
Active Member
Join Date: Jun 2005
Location: Idaho
Posts: 263
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Re: difference between a 78 front axle and a 72?
found out the gear ratio is different than mine, will the rear end fit as well?
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#4 |
Registered User
Join Date: Dec 1999
Location: Austin, TX, USA
Posts: 7,717
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Re: difference between a 78 front axle and a 72?
The rear will fit, but you will have to move the spring mounting pads and shock tabs. I built a jig and put an '86 Suburban 8 lug axle in mine. I kept my Dana 44 and just put the Suburban brakes on it. Mostly because the 10 bolt was a dual shock setup and I didn't want to go there.
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44 Willys MB 52 M38A1 64 Corvette Coupe 68 Camaro 'vert LT1 & TH700 69 Z/28 355 12.6's @110 69 Chevy Short Step 4 1/2"/7" drop 72 Jimmy 4WD 4spd 4" & 35's 02 GMC 2500HD 4x4 Duramax |
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