1972 Blazer 4x4 to 2WD Conversion - The 1947 - Present Chevrolet & GMC Truck Message Board Network

*YoungPup1977* · 05-07-2017, 10:57 PM

I am in the process of converting a 1972 Blazer 4x4 to a 2wd. My question I have is related to the rear suspension regarding the shock cross member. Does anyone sell this cross member along with the trailing arm cross member. As far as I know, the c10 pickup shock cross member made by CPP will not work on a 1972 blazer frame, also I do not think the trailing arm cross member from a c10 will fit the blazer frame either....Any direction or advice would be great. Thanks.

**c10-72 II** · 05-14-2017, 02:39 PM

Wasted Income did a 2wd conversion using Porterbuilt stuff. Project Family Truckster is his build thread. If you don't have the money to go that route try a axle flip kit by Belltech, it's a six inch drop. I was use going that on my 74 k5 but decided to stay 4wd.

*YoungPup1977* · 05-29-2017, 10:17 AM

Starting the process....4x4 to 2wd conversion on my 1972 blazer.

Removing the leaf springs and clean up the frame.

bnii · 12-10-2017, 01:08 AM

Any updates? I bought a 70 k5 4x4 and I'm about to start a 2wd conversion. I bought a 2wd front frame section and transmission cross member. I know I will need to drill new holes for the front cross member and plan on doing a flip kit for the rear end. Did you run into any snags?

**dec010974** · 12-10-2017, 01:35 AM

Keep us posted. This thread seems like it would offer a lot of useful information.

*YoungPup1977* · 01-21-2018, 12:40 AM

Update: Installing the front cross member from a 1973 chevy pickup and found trailing arms / rear diff to add to this project. Addition of a 496 Big Block and a 700R4. I am done rebuilding the transmission, block is at the machine shop.

I know every one seems to be alarmed with a 700R4 behind a big block, I build transmissions for a living so I guess its not a big deal to me plus I do not beat on my trucks to break them....drive them to enjoy not to destroy !!!!

Bought the Porterbuilt trailing arm tubular cross member. not in pic....

Going to Fab in rear spring frame supports, pics will be coming soon........

PEDROSKI · 01-23-2018, 02:01 PM

Have you seen this kit?

https://www.azproperformance.com/Dea...Notch-4wd.html

*YoungPup1977* · 02-25-2018, 11:40 PM

Quote:

Originally Posted by PEDROSKI

Have you seen this kit?

https://www.azproperformance.com/Dea...Notch-4wd.html

Yes, I have seen this kit, I like it. Going to purchase this kit. Thanks for the info.

*YoungPup1977* · 07-08-2018, 11:22 AM

The latest look of the 72 blazer 4x4 to 2WD conversion. The tires in the rear align with the tub. Test fitting everything, next will be attaching the fenders. Than take it all apart once more. Having fun !!!!

OKGMC4 · 12-11-2020, 09:46 AM

I know it’s an old thread but maybe someone can answer this...if you do a blazer with the trailing arm suspension doesn’t the crossmember sit really really close to the rear tail of the trans? Looking to convert a pickup to a blazer roadster and if I shorten my frame another 8 inches there won’t be a huge amount of room in that space. I don’t have my LS engine up against the firewall, either. Looks like I might only be ok because I have the CPP crossmember and the driveshaft hoop is taller than the stock crossmember. Maybe it’s because the old th350 trans is shorter than my 4L80E?

gringoloco · 12-15-2020, 09:22 PM

Quote:

Originally Posted by OKGMC4

I know it’s an old thread but maybe someone can answer this...if you do a blazer with the trailing arm suspension doesn’t the crossmember sit really really close to the rear tail of the trans? Looking to convert a pickup to a blazer roadster and if I shorten my frame another 8 inches there won’t be a huge amount of room in that space. I don’t have my LS engine up against the firewall, either. Looks like I might only be ok because I have the CPP crossmember and the driveshaft hoop is taller than the stock crossmember. Maybe it’s because the old th350 trans is shorter than my 4L80E?

Yes, it will be close, but no closer than a factory 2wd would be. The longer overdrive transmission definitely takes up more of that available space

gringoloco · 01-27-2018, 01:20 AM

I did a trailing arm conversion a few years back (maybe 10). If I was doing it now, I would definitely use the Deadend Garage pieces

05-07-2017, 10:57 PM	#1
YoungPup1977 Account Suspended Join Date: Jun 2015 Location: No longer here Posts: 1,000	1972 Blazer 4x4 to 2WD Conversion I am in the process of converting a 1972 Blazer 4x4 to a 2wd. My question I have is related to the rear suspension regarding the shock cross member. Does anyone sell this cross member along with the trailing arm cross member. As far as I know, the c10 pickup shock cross member made by CPP will not work on a 1972 blazer frame, also I do not think the trailing arm cross member from a c10 will fit the blazer frame either....Any direction or advice would be great. Thanks.

05-14-2017, 02:39 PM	#2
c10-72 II Active Member Join Date: Sep 2013 Location: Elk Grove Village IL Posts: 152	Re: 1972 Blazer 4x4 to 2WD Conversion Wasted Income did a 2wd conversion using Porterbuilt stuff. Project Family Truckster is his build thread. If you don't have the money to go that route try a axle flip kit by Belltech, it's a six inch drop. I was use going that on my 74 k5 but decided to stay 4wd. __________________ 1972 GMC C2500 Tow Rig project 1972 C10 Air Bag project 1967 C10 Drag Truck project 1967 GMC Patina Special project 1968 C10 I have no clue what to do with project 1969 GMC C6500 I wish I had more money project 1986 K10 I have too many damn projects

05-29-2017, 10:17 AM	#3
YoungPup1977 Account Suspended Join Date: Jun 2015 Location: No longer here Posts: 1,000	Re: 1972 Blazer 4x4 to 2WD Conversion Starting the process....4x4 to 2wd conversion on my 1972 blazer. Removing the leaf springs and clean up the frame. Attached Images

12-10-2017, 01:08 AM	#4
bnii Registered User Join Date: Aug 2014 Location: medford oregon Posts: 1	Re: 1972 Blazer 4x4 to 2WD Conversion Any updates? I bought a 70 k5 4x4 and I'm about to start a 2wd conversion. I bought a 2wd front frame section and transmission cross member. I know I will need to drill new holes for the front cross member and plan on doing a flip kit for the rear end. Did you run into any snags? Last edited by bnii; 12-10-2017 at 01:36 AM.

12-10-2017, 01:35 AM	#5
dec010974 Senior Member Join Date: Oct 2012 Location: Miami, Florida Posts: 959	Re: 1972 Blazer 4x4 to 2WD Conversion Keep us posted. This thread seems like it would offer a lot of useful information.

01-21-2018, 12:40 AM	#6
YoungPup1977 Account Suspended Join Date: Jun 2015 Location: No longer here Posts: 1,000	Re: 1972 Blazer 4x4 to 2WD Conversion Update: Installing the front cross member from a 1973 chevy pickup and found trailing arms / rear diff to add to this project. Addition of a 496 Big Block and a 700R4. I am done rebuilding the transmission, block is at the machine shop. I know every one seems to be alarmed with a 700R4 behind a big block, I build transmissions for a living so I guess its not a big deal to me plus I do not beat on my trucks to break them....drive them to enjoy not to destroy !!!! Bought the Porterbuilt trailing arm tubular cross member. not in pic.... Going to Fab in rear spring frame supports, pics will be coming soon........ Attached Images

01-23-2018, 02:01 PM	#7
PEDROSKI Registered User Join Date: Mar 2014 Location: Dallas tx Posts: 138	Re: 1972 Blazer 4x4 to 2WD Conversion Have you seen this kit? https://www.azproperformance.com/Dea...Notch-4wd.html __________________ 72 2wd k5 blazer 86 c10 "Red",76 2wdK5 "Bertha",77 2wdK5 "48",79 c10"Buster" GONE

07-08-2018, 11:22 AM	#9
YoungPup1977 Account Suspended Join Date: Jun 2015 Location: No longer here Posts: 1,000	Re: 1972 Blazer 4x4 to 2WD Conversion The latest look of the 72 blazer 4x4 to 2WD conversion. The tires in the rear align with the tub. Test fitting everything, next will be attaching the fenders. Than take it all apart once more. Having fun !!!! Attached Images

12-11-2020, 09:46 AM	#10
OKGMC4 Registered User Join Date: Oct 2009 Location: Broken Arrow, OK Posts: 1,245	Re: 1972 Blazer 4x4 to 2WD Conversion I know it’s an old thread but maybe someone can answer this...if you do a blazer with the trailing arm suspension doesn’t the crossmember sit really really close to the rear tail of the trans? Looking to convert a pickup to a blazer roadster and if I shorten my frame another 8 inches there won’t be a huge amount of room in that space. I don’t have my LS engine up against the firewall, either. Looks like I might only be ok because I have the CPP crossmember and the driveshaft hoop is taller than the stock crossmember. Maybe it’s because the old th350 trans is shorter than my 4L80E? __________________ 56 GMC BUILD THREAD: http://67-72chevytrucks.com/vboard/s...d.php?t=368649 69 long bed Chevy turned 67 gmc jimmy roadster: https://67-72chevytrucks.com/vboard/...d.php?t=851167

01-27-2018, 01:20 AM	#12
gringoloco A guy with a truck Join Date: Sep 2005 Location: Germany, for now Posts: 5,921	Re: 1972 Blazer 4x4 to 2WD Conversion I did a trailing arm conversion a few years back (maybe 10). If I was doing it now, I would definitely use the Deadend Garage pieces __________________ -Chris Instagram _elgringoloco_ '70 Short-Wide How to: Ruin a perfectly good C10 ‘70 Blazer ConversionHow To: Ruin a Perfectly Good 4wd '72 Highlander How To: Ruin a Perfectly Good K/5 (SOLD) '72 Blazer 2WD How to: Ruin a perfectly good Blazer (SOLD) '05 Yukon Daily Driven (not so stock) Yukon (SOLD) ‘07 Yukon Denali (daily) Members met list: SCOTI, darkhorse970, 67cheby, 67cheby'sGirl, klmore, porterbuilt, n2billet, Fastrucken, classicchev, Col Clank, GSFMECH, HuggerCST, Spray-Bomb, BACKYARD88, 5150, fine69, fatbass, smbrouss70, 65StreetCruiser, GAc10boy



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