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post #1 of (permalink) Old 03-07-2005, 06:02 PM
chevy1998
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2wd to 4wd

i wanted to know how hard it it to change my 98' 2wd to 4wd and what parts are need to make the change.
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post #2 of (permalink) Old 03-08-2005, 03:05 PM
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Re: 2wd to 4wd

You're better off buying a 4wd truck. But if you really want to go through with the work and gobs of money you got two ways to do this...well really one way. That would be a solid axle 4wd. So, you'd need an axle, and all steering parts. You'd need a front drive shaft and then a transfer case.

In this case, any case might do (although I'm partial to the NP241 since that's what I know), and output side wouldn't really matter since you're choosing the axle and aren't really tied down to a dside output. You'll most likely need to shorten the output shaft on our current transmission in order to fit the tcase in. You'll need the appropriate crossmembers fabbed, and you'll need your rear driveshaft shortened. You'll want to make sure the rear gears are the same as the front gears. You'll also want (for ease of tire rotations) to make sure lug patterns are the same on both front and rear axles. Be aware that rear axles on 2wd Chevys are narrower than the 4wd versions, so you'll need to watch the track width when choosing the front axle. Or you could change out the rear axle. Or you could use wheel spacers. As for engaging 4wd, you'll want to keep that easy, like a posilok type system so you don't have to doodle with tcase wiring.

Now you'll need to look under the truck and make sure you have room for the extra truck pieces. You'll also need to be aware that you'll need to lift your truck to make the front suspension fit like it should. You'll need a way to mount your axle, either coil spring or leaf springs. So, you'll need brackets welded to the frame to accomodate this. As well as the leaves or coils.

At any rate, if you do this, post pics [img]images/graemlins/grin.gif[/img]
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