Front end suspension questions. - The 1947 - Present Chevrolet & GMC Truck Message Board Network

krue · 04-17-2005, 07:05 PM

I have a 72 parts truck and I want to swap the disc brakes to my 70. The entire crossmember is the easiest way, but my bottom control arms aren't the same. The pass. side has been replaced and appears to be ~1/2" wider at the inside (where it mounts to the crossmember). That's the only difference I can see, but obviously I don't know what I am looking for. Can I use this crossmember or should I just use the spindles and tie rods?

krue · 04-17-2005, 07:07 PM

The passenger side isn't mounted the same as the driver side either.

5150 · 04-17-2005, 08:09 PM

hey krue I don't know if this will help but check out my thread I asked some questions that TxFirefighter answered maybe it will pertain to your job.

http://67-72chevytrucks.com/vboard/s....php3?t=143451

Hope it helps or maybe I didn't understand what you are asking.

krue · 04-17-2005, 09:29 PM

That helps a lot. Next question is how hard is it to use the tie rods off of the 72 and use the center link off my 70?

5150 · 04-17-2005, 10:00 PM

That whole thread krue still confuses me. I was trying to do it right by putting all new stuff on there, but I might just throw on the drop spindles and go, if I can.

krue · 04-18-2005, 11:17 AM

Nobody else wanna chime in?

Billy G · 04-18-2005, 12:53 PM

I just did the disc conversion on my 70 GMC...using a 76 doner setup. Dont know if this will help...but I kept the 70 A-Arms...just cause I was lazy and didnt wanna crawl up under the truck....used the 76 spindles with 76 ball joints...upper and lower. Then I put the complete linkage....centerlink, idler arm, and tie rod ends....just as I took it off the doner front end...and it dropped right in...including hooking up to the manual pitman arm....without ANY changes. Granted...I haven't driven or had the front end aligned yet, but dont anticipate any problems.
I will be changing the A-arms in the near future....one for convienence on the disc brake hose hookup...and second, the left side upper A-arm might be slightly bent...reason I say this is the ball joint does NOT sit flush...right side does. Just a 'gut feeling' that it might be too much stress on the 5/16 bolts...as it sits.....IMO....AND...they got the cabinet blaster fixed @ work...so now I can paint them too. *thank GOD for GRAVEYARDS*...lol. I'll also replace the idler arm, and tie rod ends...as well as convert to power steering...as more funds become available...but for now...I feel they'll work just fine.
Like I said...the front end went together SO EASILY...I was looking to see just WHAT I missed.
Hope this help....and not confuses....

Billy G

04-17-2005, 07:05 PM	#1
krue Designated A-hole! Join Date: Mar 2003 Location: South Mississippi Posts: 36,450	Front end suspension questions. I have a 72 parts truck and I want to swap the disc brakes to my 70. The entire crossmember is the easiest way, but my bottom control arms aren't the same. The pass. side has been replaced and appears to be ~1/2" wider at the inside (where it mounts to the crossmember). That's the only difference I can see, but obviously I don't know what I am looking for. Can I use this crossmember or should I just use the spindles and tie rods? Attached Images __________________ "If it ain't broke, fix it 'til it is!" Being stupid ain't illegal. We're Still Debt Free Except for the House!!! www.daveramsey.com 70 GMC SWB Stepside project "Green Booger" soon to be 6.0l/4l80e 93 S-10 "Poppaw's Truck"

04-17-2005, 07:07 PM	#2
krue Designated A-hole! Join Date: Mar 2003 Location: South Mississippi Posts: 36,450	The passenger side isn't mounted the same as the driver side either. __________________ "If it ain't broke, fix it 'til it is!" Being stupid ain't illegal. We're Still Debt Free Except for the House!!! www.daveramsey.com 70 GMC SWB Stepside project "Green Booger" soon to be 6.0l/4l80e 93 S-10 "Poppaw's Truck"

04-17-2005, 08:09 PM	#3
5150 C10 Club Tennessee Join Date: Mar 2003 Location: White House, TN 37188 Posts: 8,281	hey krue I don't know if this will help but check out my thread I asked some questions that TxFirefighter answered maybe it will pertain to your job. http://67-72chevytrucks.com/vboard/s....php3?t=143451 Hope it helps or maybe I didn't understand what you are asking. __________________ Bryan www.gmtruckshow.com Project "Andes"-Halen's First Truck Project: Patina Burb for he is God’s servant for your good. But if you do wrong, be afraid, for he does not bear the sword in vain. For he is the servant of God, an avenger who carries out God’s wrath on the wrongdoer. Romans 13:4

04-17-2005, 09:29 PM	#4
krue Designated A-hole! Join Date: Mar 2003 Location: South Mississippi Posts: 36,450	That helps a lot. Next question is how hard is it to use the tie rods off of the 72 and use the center link off my 70? __________________ "If it ain't broke, fix it 'til it is!" Being stupid ain't illegal. We're Still Debt Free Except for the House!!! www.daveramsey.com 70 GMC SWB Stepside project "Green Booger" soon to be 6.0l/4l80e 93 S-10 "Poppaw's Truck"

04-17-2005, 10:00 PM	#5
5150 C10 Club Tennessee Join Date: Mar 2003 Location: White House, TN 37188 Posts: 8,281	That whole thread krue still confuses me. I was trying to do it right by putting all new stuff on there, but I might just throw on the drop spindles and go, if I can. __________________ Bryan www.gmtruckshow.com Project "Andes"-Halen's First Truck Project: Patina Burb for he is God’s servant for your good. But if you do wrong, be afraid, for he does not bear the sword in vain. For he is the servant of God, an avenger who carries out God’s wrath on the wrongdoer. Romans 13:4

04-18-2005, 11:17 AM	#6
krue Designated A-hole! Join Date: Mar 2003 Location: South Mississippi Posts: 36,450	Nobody else wanna chime in? __________________ "If it ain't broke, fix it 'til it is!" Being stupid ain't illegal. We're Still Debt Free Except for the House!!! www.daveramsey.com 70 GMC SWB Stepside project "Green Booger" soon to be 6.0l/4l80e 93 S-10 "Poppaw's Truck"

04-18-2005, 12:53 PM	#7
Billy G Registered User Join Date: May 2003 Location: Dayton, Tx (in Old River) Posts: 286	I just did the disc conversion on my 70 GMC...using a 76 doner setup. Dont know if this will help...but I kept the 70 A-Arms...just cause I was lazy and didnt wanna crawl up under the truck....used the 76 spindles with 76 ball joints...upper and lower. Then I put the complete linkage....centerlink, idler arm, and tie rod ends....just as I took it off the doner front end...and it dropped right in...including hooking up to the manual pitman arm....without ANY changes. Granted...I haven't driven or had the front end aligned yet, but dont anticipate any problems. I will be changing the A-arms in the near future....one for convienence on the disc brake hose hookup...and second, the left side upper A-arm might be slightly bent...reason I say this is the ball joint does NOT sit flush...right side does. Just a 'gut feeling' that it might be too much stress on the 5/16 bolts...as it sits.....IMO....AND...they got the cabinet blaster fixed @ work...so now I can paint them too. thank GOD for GRAVEYARDS...lol. I'll also replace the idler arm, and tie rod ends...as well as convert to power steering...as more funds become available...but for now...I feel they'll work just fine. Like I said...the front end went together SO EASILY...I was looking to see just WHAT I missed. Hope this help....and not confuses.... Billy G __________________ My FAMOUS LAST WORDS...."Ima Gonna!!" - 1970 GMC 1500 swb/step 250 I-6 3 spd - "The GEM" - 1976 Chev Scotsdale swb/step 350/350 - "The JEWEL" - 1982 Chev C-10 swb/step 250 I-6 3 spd - - 2001 Chev Silverado LT - Last edited by Billy G; 04-18-2005 at 12:56 PM.



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