73-87chevytrucks.com
73-87 Chevy _ GMC Trucks => 4 Wheel Drives => Topic started by: ali-mufc on August 01, 2017, 02:52:08 pm
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hi every one , I'm new here
I'm from Iran and i going to convert a 2wd chevy custom to a 4wd and i need your help :)
In Iran 98 percent of customs are C20 2wd 6 cylinder 1977-1980.
The 4wd ones are very very expensive .maybe 3 times more than a 2wd and i cant afford it.
Fortunately there are too many blazers 4wd 8 cylinder 1977-1980
Changing the Chassis frame is illegal here, also changing the body and engine is illegal .we only can change axle and gearbox .
Can i use the front axle of blazer and its transfer case to make it?
Is it fit? Is it work ? any other changes is necessary to do?
thank you so much :)
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Yes it will work. More things you will need is 4wd gearbox. Unless you want to do crossover steering you use a 2wd gearbox. Spring hangers, driveshafts, pitman arm, draglink. That will be a good start.
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make sure you have the same gear ratios in both the front & rear axles
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It is a tremendous amount of work. Few people in the USA attempt this conversion. The devil is in the details, and there are a lot of details to consider.
Such as the transmission hump. The Squarebody trucks (73-87) factory 4x4's all have a taller hump to accommodate the transfer case. You will most likely need to fabricate a new one or get a tall hump from a donor truck.
With that said, given enough time and effort, anything is possible.
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Yes it will work. More things you will need is 4wd gearbox. Unless you want to do crossover steering you use a 2wd gearbox. Spring hangers, driveshafts, pitman arm, draglink. That will be a good start.
thanks.drag link , pitman arm , drive shaft , spring hangers and 4wd gearbox is no problem.if its all, it not too difficult
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make sure you have the same gear ratios in both the front & rear axles
yes of course ,thanks
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It is a tremendous amount of work. Few people in the USA attempt this conversion. The devil is in the details, and there are a lot of details to consider.
Such as the transmission hump. The Squarebody trucks (73-87) factory 4x4's all have a taller hump to accommodate the transfer case. You will most likely need to fabricate a new one or get a tall hump from a donor truck.
With that said, given enough time and effort, anything is possible.
I think few people attempt it because in USA you can change the frame or body easily and its not illegal
I can cut the base of cab to reach enough space for transmission hump.thanks
but all i want to know is , what is the exact difference between front axle of 4wd custom and a blazer ?
If i could find a 4wd custom front axle , is it easier to match?
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The 1/2 ton axles will interchange between trucks, Suburbans and Blazers. you will also need a new rear driveshaft. Just keep the donor vehicle there for parts while you do the conversion.
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forgot to mention, the lug pattern will be different between a C20 8 lug and K5 6 lug so you'll want to swap both axles.
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The 1/2 ton axles will interchange between trucks, Suburbans and Blazers. you will also need a new rear driveshaft. Just keep the donor vehicle there for parts while you do the conversion.
thanks
1/2 ton axles are the 6 lug ones? right?
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Yes
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Keep us posted as to your progress! Regarding the number of lugs, the front hubs are interchangeable easily allowing one to change from 6 and 8 lug, pics posted to: http://www.bacliffrv.com/Truck Should you need any pics or measurements from my K10 with K20 (3/4 ton) running rear just drop me a line. All the best.
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Keep us posted as to your progress! Regarding the number of lugs, the front hubs are interchangeable easily allowing one to change from 6 and 8 lug, pics posted to: http://www.bacliffrv.com/Truck Should you need any pics or measurements from my K10 with K20 (3/4 ton) running rear just drop me a line. All the best.
thanks