Trailing Arm Crossmember Fit on a Blazer?? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

WarMonger · 09-17-2015, 02:59 PM

Ok, I have a 1972 Blazer that is 4WD. I'm converting to 2wd and putt'n her on the ground. I was wondering if I convert over to trailing arms, will the trailing arm Crossmember fit between the frame rails like in a C10 or will I have to do some serious mods?

mike16 · 09-17-2015, 05:44 PM

I'm not familiar with the Blazer market but arn't 4x4 blazers kinda valuable? Down here in AZ they are.

If you want to make it a two wheel drive theres a lever down on the floor betwen the passenger and the driver........

or just take the front drive shaft out

cdowns · 09-17-2015, 05:47 PM

yes the trailing arm crossmember will fit right in

Twisted78SS · 09-17-2015, 05:50 PM

Works out fine, did it to one of mine a few years ago with the help of Livrat,
http://67-72chevytrucks.com/vboard/s...d.php?t=327847
check pages 5-6.

While this was an aftermarket cross member, it is the same whether for a truck or blazer

WarMonger · 09-17-2015, 06:00 PM

Quote:

Originally Posted by Twisted78SS

Works out fine, did it to one of mine a few years ago with the help of Livrat,
http://67-72chevytrucks.com/vboard/s...d.php?t=327847
check pages 5-6.

While this was an aftermarket cross member, it is the same whether for a truck or blazer

Looks great. That link also helps out with my next question about the alignment of the crossmember. Did you use stock Trailing arms or aftermarket ones?

cdowns · 09-17-2015, 07:27 PM

2wd blazers used stock c10 type trailing arms for the suspension

elkniks · 09-17-2015, 09:01 PM

I just finished mine using stock but welded trailing arms and a CPP drop cross member with the trailing arm mounts upside down from stock. With no notch and a 3/8" bumpstop mounted to the frame the trailing arms come extremely close to hitting the frame a full compression. Installed ECC 6" rear springs and so far so good, I have only hit the bump stops twice and there is no contact between frame and trailing arms. Have fun drilling all them holes!

Also I followed Grincoloco's lead an moved the x-member that spans the front mounts for the rear leaf spring brackets but I had to fabricate brackets that tie that X-member to the lower half of the frame and plates with gussets for the coils to rest on.

WarMonger · 09-18-2015, 10:03 AM

I checked out Gringoloco's build. Lots of good info on that thread

09-17-2015, 02:59 PM	#1
WarMonger Registered User Join Date: Jan 2015 Location: Ventura, CA Posts: 818	Trailing Arm Crossmember Fit on a Blazer?? Ok, I have a 1972 Blazer that is 4WD. I'm converting to 2wd and putt'n her on the ground. I was wondering if I convert over to trailing arms, will the trailing arm Crossmember fit between the frame rails like in a C10 or will I have to do some serious mods? __________________ ..................... ____ .........________//__{\_____ ,,,,,,,/__(O)___//___/__(O)_/ 1970 C20 -_--_--_- ______ _--_--_- /___\|__\____ -_--_-_ \|_(0)\|__\|_(0)] 1972 K5

09-17-2015, 05:44 PM	#2
mike16 Registered User Join Date: Dec 2009 Location: bisbee, arizona Posts: 1,529	Re: Trailing Arm Crossmember Fit on a Blazer?? I'm not familiar with the Blazer market but arn't 4x4 blazers kinda valuable? Down here in AZ they are. If you want to make it a two wheel drive theres a lever down on the floor betwen the passenger and the driver........ or just take the front drive shaft out

09-17-2015, 05:47 PM	#3
cdowns Senior Member Join Date: Jan 2003 Location: daytonabeach Posts: 22,956	Re: Trailing Arm Crossmember Fit on a Blazer?? yes the trailing arm crossmember will fit right in __________________ 71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY

09-17-2015, 05:50 PM	#4
Twisted78SS Wide n'Low Join Date: Jan 2007 Location: La Center, WA Posts: 1,511	Re: Trailing Arm Crossmember Fit on a Blazer?? Works out fine, did it to one of mine a few years ago with the help of Livrat, http://67-72chevytrucks.com/vboard/s...d.php?t=327847 check pages 5-6. While this was an aftermarket cross member, it is the same whether for a truck or blazer __________________ Trippin Hazard.. 67 swb, Gold Member.. 68 Suburban Air Force Retired

09-17-2015, 07:27 PM	#6
cdowns Senior Member Join Date: Jan 2003 Location: daytonabeach Posts: 22,956	Re: Trailing Arm Crossmember Fit on a Blazer?? 2wd blazers used stock c10 type trailing arms for the suspension __________________ 71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY

09-17-2015, 09:01 PM	#7
elkniks Registered User Join Date: Mar 2015 Location: Seaside,CA Posts: 142	Re: Trailing Arm Crossmember Fit on a Blazer?? I just finished mine using stock but welded trailing arms and a CPP drop cross member with the trailing arm mounts upside down from stock. With no notch and a 3/8" bumpstop mounted to the frame the trailing arms come extremely close to hitting the frame a full compression. Installed ECC 6" rear springs and so far so good, I have only hit the bump stops twice and there is no contact between frame and trailing arms. Have fun drilling all them holes! Also I followed Grincoloco's lead an moved the x-member that spans the front mounts for the rear leaf spring brackets but I had to fabricate brackets that tie that X-member to the lower half of the frame and plates with gussets for the coils to rest on. Last edited by elkniks; 09-17-2015 at 09:07 PM.

09-18-2015, 10:03 AM	#8
WarMonger Registered User Join Date: Jan 2015 Location: Ventura, CA Posts: 818	Re: Trailing Arm Crossmember Fit on a Blazer?? I checked out Gringoloco's build. Lots of good info on that thread __________________ ..................... ____ .........________//__{\_____ ,,,,,,,/__(O)___//___/__(O)_/ 1970 C20 -_--_--_- ______ _--_--_- /___\|__\____ -_--_-_ \|_(0)\|__\|_(0)] 1972 K5

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