4wd blazer to 2wd? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Chevy Punk · 06-01-2002, 07:15 PM

Has anyone made a 4 wheel drive blazer a two wheel drive? Mabye with 2wd controll anms and other stuff. What about the transfer case?

Benrs86 · 06-01-2002, 07:22 PM

i think if you move your engine mounts back, you might need a differnet transmission crosmember, then im not sure how you do the front, maybe unbolt the 4wd stuff, leafs and everything and take the 6 big bolts off the crossmember of a 2wd and bolt it in. you just take out the transfer case. you will need somebody like fast to reply to this. good luck, Ben

Leinie · 06-01-2002, 07:58 PM

Depends on your tranny, if you have an auto- you gotta get a 2wd tranny. If it's a manual- I don't know.
I think the 2wd had coil rears and sit a few inches lower than the leaf 4x4's. If you have an NP205 T- case you can sell it to defray some other costs. Good Luck!

lofly'a · 06-01-2002, 08:24 PM

i did it about 6 years ago, but i used a 74-81 z28 front subframe. hacked the frame off at the firewall and grafted the subframe on.
i chose this conversion because it gave me a shorter turning radius and got the slammed look with no other modifications.
the only tough part was getting the radiator support mounted. i actually didn't cut the subframe, i sliced part of it along the sides and slide it along the outside of the frame and used the crossmember that came with the subframe then welded.
it was a big job, but it rides great, and turns on a dime. oh yea, i used the z28 rearend and springs too.
i had to move the spring perches, and add a leaf to get the right ride height. that way i have the same bolt pattern all around.
the rearend is narrower so i had to use deep dish reverse wheels to compensate. i lucked up and found a z28 rearend with disc brakes so it also stops real good.
i wouldn't suggest this conversion to the faint of heart, it was a lot of work, but i have/had no use for a 4x4, and i bought the blazer real cheap (100) so i had little to lose.
however you decide, good luck...........

Chevy Punk · 06-01-2002, 08:31 PM

Thanks for the info. I don't think i would want to cut the frame ip too much but that's just my preference.

Leinie · 06-01-2002, 08:32 PM

Forgot about the 6 lug to 5 lug rearend conversion. lofly'a- sounds like a cool ride!

*racedvl* · 06-01-2002, 10:45 PM

I have often thought of this. (Even though I don't have a Blazer). I would think you could get your self a coil sprung 2x4 truck chassis and swich the arms over with that rearend, and bolt the front cross member in.

ebfabman · 06-02-2002, 01:25 AM

lofly'a, you got ant pics of that blazer, I'd like to see it...........

70 Jimmy · 06-02-2002, 12:38 PM

I'm in the middle of this conversion myself. The only difference is that I notched my crossmember to get another 1.5" of drop without affecting ride quallity. The crossmember from a 2wd will bolt up to a couple of holes but you'll have to drill out a couple and add a couple of more. It's fairly obvious, once you get the crossmember in place, as to which one's match. As far as engine mounts, it's up to you where you want them. I'm going to try and move my 454 foward to give my HEI and valve covers a little more room. You'll have to get a driveshaft to match your tranny to diff. distance. If your running an auto, you'll have to have your tailcone coverted to 2wd or get a tranny from a 2wd truck/car/whatever (that's what I did). I haven't hooked up my brake lines yet so I don't know if I can make my solid lines work. I did get new 2wd flex hoses ($25 a peice!). An entire article could be written on the subject. If you have any questions, ask and I'll try to answer.

blazer boy · 06-02-2002, 03:34 PM

i have just finished up on converting my 69 blazer to a 2wd . also put a 454 in it as well as lowered it quite a bit in the process . email me at jasonrowl@hotmail for more details

06-01-2002, 07:15 PM	#1
Chevy Punk Registered User Join Date: Apr 2002 Location: Blaine WA Posts: 455	4wd blazer to 2wd? Has anyone made a 4 wheel drive blazer a two wheel drive? Mabye with 2wd controll anms and other stuff. What about the transfer case?

06-01-2002, 07:22 PM	#2
Benrs86 Registered User Join Date: Feb 2000 Location: Brandon, SD, USA Posts: 1,292	i think if you move your engine mounts back, you might need a differnet transmission crosmember, then im not sure how you do the front, maybe unbolt the 4wd stuff, leafs and everything and take the 6 big bolts off the crossmember of a 2wd and bolt it in. you just take out the transfer case. you will need somebody like fast to reply to this. good luck, Ben __________________ Brandon, SD 69 GMC 1/2 ton 2wd wide long bed with wood 3 on the tree 350 engine 4 bolt main rv cam AIM = Alphray04

06-01-2002, 08:24 PM	#4
lofly'a Registered User Join Date: May 2000 Location: Alexandria, LA 71301 Posts: 1,451	i did it about 6 years ago, but i used a 74-81 z28 front subframe. hacked the frame off at the firewall and grafted the subframe on. i chose this conversion because it gave me a shorter turning radius and got the slammed look with no other modifications. the only tough part was getting the radiator support mounted. i actually didn't cut the subframe, i sliced part of it along the sides and slide it along the outside of the frame and used the crossmember that came with the subframe then welded. it was a big job, but it rides great, and turns on a dime. oh yea, i used the z28 rearend and springs too. i had to move the spring perches, and add a leaf to get the right ride height. that way i have the same bolt pattern all around. the rearend is narrower so i had to use deep dish reverse wheels to compensate. i lucked up and found a z28 rearend with disc brakes so it also stops real good. i wouldn't suggest this conversion to the faint of heart, it was a lot of work, but i have/had no use for a 4x4, and i bought the blazer real cheap (100) so i had little to lose. however you decide, good luck........... __________________ -02 avalanche (daily driver) -66 gto ragtop 389/400 (garage queen, hand-me-down from dad) -72 Tribute Trans Am (6.0LS/T56 6-speed) in progress -2003 YUKON (Wife's) -71 gmc swb fleet (current project, gonna shave everything, bags, stuff w/ 20's, gen III powertrain) -48 3100 SWB - 12/31/23 LONG TERM Project

06-01-2002, 08:32 PM	#6
Leinie Registered User Join Date: Feb 2001 Location: USA Posts: 2,613	Forgot about the 6 lug to 5 lug rearend conversion. lofly'a- sounds like a cool ride! Last edited by Leinie; 06-01-2002 at 08:34 PM.

06-02-2002, 12:38 PM	#9
70 Jimmy aka Crusher, Crushergmc Join Date: Mar 2000 Location: Oregon Posts: 1,834	I'm in the middle of this conversion myself. The only difference is that I notched my crossmember to get another 1.5" of drop without affecting ride quallity. The crossmember from a 2wd will bolt up to a couple of holes but you'll have to drill out a couple and add a couple of more. It's fairly obvious, once you get the crossmember in place, as to which one's match. As far as engine mounts, it's up to you where you want them. I'm going to try and move my 454 foward to give my HEI and valve covers a little more room. You'll have to get a driveshaft to match your tranny to diff. distance. If your running an auto, you'll have to have your tailcone coverted to 2wd or get a tranny from a 2wd truck/car/whatever (that's what I did). I haven't hooked up my brake lines yet so I don't know if I can make my solid lines work. I did get new 2wd flex hoses ($25 a peice!). An entire article could be written on the subject. If you have any questions, ask and I'll try to answer. __________________ "KEEP IT DOWN!" 70 Jimmy 454 2wd 56 GMC Big Window "It's funny till someone gets hurt, then it's freakin' hilarious"

06-01-2002, 07:58 PM	#3
Leinie Registered User Join Date: Feb 2001 Location: USA Posts: 2,613	Depends on your tranny, if you have an auto- you gotta get a 2wd tranny. If it's a manual- I don't know. I think the 2wd had coil rears and sit a few inches lower than the leaf 4x4's. If you have an NP205 T- case you can sell it to defray some other costs. Good Luck!

06-01-2002, 08:31 PM	#5
Chevy Punk Registered User Join Date: Apr 2002 Location: Blaine WA Posts: 455	Thanks for the info. I don't think i would want to cut the frame ip too much but that's just my preference.

06-01-2002, 10:45 PM	#7
racedvl Account Suspended Join Date: Jan 2000 Location: Woodstock, IL Posts: 7,020	I have often thought of this. (Even though I don't have a Blazer). I would think you could get your self a coil sprung 2x4 truck chassis and swich the arms over with that rearend, and bolt the front cross member in.

06-02-2002, 01:25 AM	#8
ebfabman Registered User Join Date: Nov 2001 Location: Concord, NC Posts: 2,488	lofly'a, you got ant pics of that blazer, I'd like to see it...........

06-02-2002, 03:34 PM	#10
blazer boy Registered User Join Date: Feb 2001 Location: derby ks usa Posts: 115	i have just finished up on converting my 69 blazer to a 2wd . also put a 454 in it as well as lowered it quite a bit in the process . email me at jasonrowl@hotmail for more details



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