Author Topic: 3/4 ton axles on a k5 blazer?  (Read 4576 times)

Offline chevyh20

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3/4 ton axles on a k5 blazer?
« on: February 24, 2009, 11:36:08 PM »
hello folks.
i have an 89 blazer that i use to plow with. the front end is a little taxed and worn out carrying a fisher speedcast plow. now it is making a kathunk  noise in the front and the rear drums are badly rusted. so i have a chance to pick up a 3/4 ton set for 200.00 . has anyone done a switch like this? will they bolt in place of the old 1/2 ton axles. thanks for the input.
Jeffrey

Offline Blazin

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Re: 3/4 ton axles on a k5 blazer?
« Reply #1 on: February 25, 2009, 12:16:04 AM »
Bolt right in, you will need to replace the rear u joint with a cross over one.
Some people are like Slinkies. Not really good for anything, but they still bring a smile to your face when you push them down a flight of stairs

Offline joesgarage71

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Re: 3/4 ton axles on a k5 blazer?
« Reply #2 on: February 25, 2009, 04:40:28 AM »
 And don't forget you'll need 8 lug rims too.
78' K-20 355/SM465/twin stick 205 6" on 36's
14 bolt FF/big bearing Dana 44 4.56 gears

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Offline chevyh20

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Re: 3/4 ton axles on a k5 blazer?
« Reply #3 on: February 25, 2009, 07:50:42 PM »
thanks for the input on this . ok i'm still considering the 3/4 ton upgrade option. Do you guys think it is worth while to go to 3/4 ton on a blazer that is used fairly hard. and any suggestion on axle type for durability and simplicity would be appreciated as i am not well schooled on this. ??? thanks again. i need to do something soon my front end is not sounding good. thanks again ,
Jeffrey

Offline Blazin

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Re: 3/4 ton axles on a k5 blazer?
« Reply #4 on: February 25, 2009, 07:57:03 PM »
Only options for 3/4 ton front axles are a Dana 44 or a 10 bolt. Rears are a full floating or a semi floating 14 bolt.
Some people are like Slinkies. Not really good for anything, but they still bring a smile to your face when you push them down a flight of stairs

Offline fitz

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Re: 3/4 ton axles on a k5 blazer?
« Reply #5 on: February 25, 2009, 10:23:57 PM »
 I say go for it.
 I had a 79 Jimmy that had the 3/4 ton axle conversion done to it before I bought it. 10 bolt front/14 bolt full floater rear with 4.11 gears and a 350/350/203(part time kit) combo. Truck had a 4" Rancho lift with 33"BFG's and a 7.5 Fisher Minute Mount plow on it. That truck was bullit proof.
 Like others said at the least you will need 8 lug rims and a conversion u joint for the rear shaft.
 You may also need an adjustable proportioning valve for the rear. Mine never had one but the rear brakes were prone to locking up under hard braking.
What kind of shape are the 3/4 ton axles in?. I spent over $600 on brake parts alone on mine when it came time for a brake job (replaced everything).
  Just make sure you budget enough money for the swap. 

Offline levisjohnson

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Re: 3/4 ton axles on a k5 blazer?
« Reply #6 on: February 26, 2009, 08:47:56 AM »
Blazin...what about a Dana 60 for the front?
Levis

88 6.2L Diesel 3+3 3/4 ton

Offline 78 Chevyrado

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Re: 3/4 ton axles on a k5 blazer?
« Reply #7 on: February 26, 2009, 10:27:21 AM »
Just cut and paste the parts onto your blazer.  it's a lot faster  :D
Kenny

1978 C-20, 350/400, 3.73, Graystone Metallic, Raceline Renegade 8 Wheels - 18x8.5, 275/70R18 BFG KO's

Offline chevyh20

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Re: 3/4 ton axles on a k5 blazer?
« Reply #8 on: February 26, 2009, 02:17:45 PM »
hey ,
thanks for inputting everyone. i ran across an ad for a 3/4 ton set on a 94 chevy 4x4 pickup. will these cut and paste also ??? i wish it was that easy :) the poster says these have 6 lug pattern. also would the leaf springs fit our vintage trucks?

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Re: 3/4 ton axles on a k5 blazer?
« Reply #9 on: February 26, 2009, 04:58:15 PM »
A 94 won't have a solid front axle, it is IFS.

Offline fitz

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Re: 3/4 ton axles on a k5 blazer?
« Reply #10 on: February 26, 2009, 05:22:25 PM »
A 94 won't have a solid front axle, it is IFS.

Do you still plan on buying those axles from the 94?. If not would you mind letting me know? I've been looking for a 14 bolt/6 lug for this 94 Blazer I picked up. It will bolt right into this one, I just don't trust the 10 bolt in it.
                                                    Thanks. Fitz

Offline chevyh20

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Re: 3/4 ton axles on a k5 blazer?
« Reply #11 on: February 26, 2009, 11:04:58 PM »
I'm not going to get them fitz , since they won't work for me. I sent you a pm. thanks for the encouragement.
Jeff

Offline Blazin

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Re: 3/4 ton axles on a k5 blazer?
« Reply #12 on: February 27, 2009, 01:47:27 AM »
He asked about 3/4 ton stuff. Dana 60 is 1 ton.
Some people are like Slinkies. Not really good for anything, but they still bring a smile to your face when you push them down a flight of stairs

Offline fitz

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Re: 3/4 ton axles on a k5 blazer?
« Reply #13 on: February 27, 2009, 07:08:34 AM »
hello folks.
it is making a kathunk  noise in the front and the rear drums are badly rusted.

Thanks for the email, I will check them out. How bad are your axles? The rear brake drums on your truck are about $70 on the Autozone website. Have you checked into the front end noise, It could be just U joints which is a cheap repair. If you have  more serious internal problems with it you may just want to replace it. 
 What do you have for gears. I have a 91 Suburban 1/2 ton  with 3.42's in it I'll be junking in the springtime. If you want the front axle you can have it for free. I'll cut it out before it goes.
                                                            Fitz.

 


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