move crossmember forward? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

jlaird · 03-27-2007, 01:27 PM

Isn't the wheel not centered in the fender when these trucks are at full dump? The wheel moves back toward the cab right? Has anybody moved there crossmember forward to correct this? If so, how much?

gringoloco · 03-27-2007, 07:49 PM

Porterbuilt's DropMember is an inch, I think. You're talkin' bout a lot of work to use the stock steering linkage. Rack and pinion would make this much easier. Looks like you might get to be the first...

jlaird · 03-27-2007, 09:09 PM

I don't know about the rack. I've been Pm'ing porterbuilt about it and it seems it is more complicated (suspension geometry wise) than I had thought.

PBFAB.COM · 03-28-2007, 01:05 AM

Quote:

Originally Posted by jlaird

I don't know about the rack. I've been Pm'ing porterbuilt about it and it seems it is more complicated (suspension geometry wise) than I had thought.

It can be complicated... the hard part is making/finding the room to fabricate the mounts for the rack, and getting it in the right location. Fractions of an inch can have a large effect on the steering geometry. There's a reason nobody makes a kit for a 'simple' rack and pinion conversion on these trucks! It can be done, just a lot of planning, a lot of research, and a lot of patience. Anybody could fab some mounts for a rack and pinion and slap it on there... getting it work "right" takes a bit more.

jlaird · 03-28-2007, 07:29 AM

Quote:

Originally Posted by porterbuilt

It can be complicated... the hard part is making/finding the room to fabricate the mounts for the rack, and getting it in the right location. Fractions of an inch can have a large effect on the steering geometry. There's a reason nobody makes a kit for a 'simple' rack and pinion conversion on these trucks! It can be done, just a lot of planning, a lot of research, and a lot of patience. Anybody could fab some mounts for a rack and pinion and slap it on there... getting it work "right" takes a bit more.

See what i mean......I'm running for the hills!!!

Alvin · 03-28-2007, 03:19 PM

Slammed67 fixed his truck a different way.

Visit his site (http://www.jayspot.com).

Frizzle Fry · 03-28-2007, 04:03 PM

Quote:

Originally Posted by Alvin

Slammed67 fixed his truck a different way.

Visit his site (http://www.jayspot.com).

That's pretty sweet, but I wonder what the new tie-rod angles do to the performance?

jlaird · 03-28-2007, 05:09 PM

Quote:

Originally Posted by Alvin

Slammed67 fixed his truck a different way.

Visit his site (http://www.jayspot.com).

Oh yea, I forgot about that dude. He did some pretty cool stuff. At one point, he said he modified the upper arms,but he doesn't say what he did. Anybody know?

"These pictures show the modified upper a-arm ends. With the a-arms in this "low" of a position, the ball joint angles were way off. Now at ride height (as shown in the pictures), the ball joint studs are centered in the joint which will allow a full range of travel without binding."

BACKYARD88 · 03-28-2007, 06:10 PM

Maybe he raised part of the arm where the ball joint bolts on the side closest to the frame to level it out some? It's hard to tell but there doesn't appear to be as much of a curve on the outboard area of the arm as there is on a stock piece.

jlaird · 03-28-2007, 06:42 PM

oh yea, I see that. You may be right. It looks like he something was possible cut, welded, and then ground smooth.

I've also read a couple times of people flipping the uppers arms and moving them on opposite sides of the vehicle. Never seen pics of that though.

I think I'm just going to get ART uppers. My uppers need to be rebuilt at a cost of about $150. For another $150 bucks, I can just by the ART uppers.

BigSky71 · 03-30-2007, 02:50 AM

Quote:

Originally Posted by jlaird

I've also read a couple times of people flipping the uppers arms and moving them on opposite sides of the vehicle. Never seen pics of that though.

I have heard of that on big cars, but haven't seen it on a C-10 either...

jlaird · 03-30-2007, 08:18 AM

Quote:

Originally Posted by BigSky71

I have heard of that on big cars, but haven't seen it on a C-10 either...

yea, I've read about here, but never seen it.

Maybe it's one of those c10 urban myths!!

BACKYARD88 · 03-30-2007, 10:09 AM

Quote:

Originally Posted by jlaird

I've also read a couple times of people flipping the uppers arms and moving them on opposite sides of the vehicle. Never seen pics of that though.

I've read about this here also. I'm gonna try it on my truck, if ti doesn't work I can flip it back.

Jaredm82 · 03-30-2007, 12:17 PM

I \t works, I bolted them up like that before because I heard the same thing. You don't get full lift because the arm hits the crossmember before its all the way up. You could just cut out part of the arm to male it work but I wouldnt. Plus i think it looks really weird. Its very obvious they arent on right?...

BACKYARD88 · 03-30-2007, 01:12 PM

Quote:

Originally Posted by Jaredm82

Plus i think it looks really weird. Its very obvious they arent on right?...

That was my only concern. If there isn't a way to plate it so it looks better I will just modify the way the ball joint sits in the arm.

03-27-2007, 01:27 PM	#1
jlaird Senior Member Join Date: May 2004 Location: johnstown, NY Posts: 2,393	move crossmember forward? Isn't the wheel not centered in the fender when these trucks are at full dump? The wheel moves back toward the cab right? Has anybody moved there crossmember forward to correct this? If so, how much?

03-27-2007, 07:49 PM	#2
gringoloco A guy with a truck Join Date: Sep 2005 Location: Germany, for now Posts: 5,921	Re: move crossmember forward? Porterbuilt's DropMember is an inch, I think. You're talkin' bout a lot of work to use the stock steering linkage. Rack and pinion would make this much easier. Looks like you might get to be the first... __________________ -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

03-27-2007, 09:09 PM	#3
jlaird Senior Member Join Date: May 2004 Location: johnstown, NY Posts: 2,393	Re: move crossmember forward? I don't know about the rack. I've been Pm'ing porterbuilt about it and it seems it is more complicated (suspension geometry wise) than I had thought.

03-28-2007, 03:19 PM	#6
Alvin Never Done? Join Date: May 2000 Location: Ohio Posts: 1,435	Re: move crossmember forward? Slammed67 fixed his truck a different way. Visit his site (http://www.jayspot.com). __________________ Ethel - The Legend Continues... Ethel has been sold. Last edited by Alvin; 03-28-2007 at 03:19 PM.

03-28-2007, 06:10 PM	#9
BACKYARD88 On the fast track to nowhere.. Join Date: May 2006 Location: Splendora, Texas Posts: 5,316	Re: move crossmember forward? Maybe he raised part of the arm where the ball joint bolts on the side closest to the frame to level it out some? It's hard to tell but there doesn't appear to be as much of a curve on the outboard area of the arm as there is on a stock piece. __________________ -Mike Owen- Support the board here! 71 Chevy short fleet build thread Double D Norwood, Houston, Cecilia, Jackson, Monroe and counting

03-28-2007, 06:42 PM	#10
jlaird Senior Member Join Date: May 2004 Location: johnstown, NY Posts: 2,393	Re: move crossmember forward? oh yea, I see that. You may be right. It looks like he something was possible cut, welded, and then ground smooth. I've also read a couple times of people flipping the uppers arms and moving them on opposite sides of the vehicle. Never seen pics of that though. I think I'm just going to get ART uppers. My uppers need to be rebuilt at a cost of about $150. For another $150 bucks, I can just by the ART uppers. Last edited by jlaird; 03-28-2007 at 06:44 PM.

03-30-2007, 12:17 PM	#14
Jaredm82 Active Member Join Date: Jul 2005 Location: Ca Posts: 211	Re: move crossmember forward? I \t works, I bolted them up like that before because I heard the same thing. You don't get full lift because the arm hits the crossmember before its all the way up. You could just cut out part of the arm to male it work but I wouldnt. Plus i think it looks really weird. Its very obvious they arent on right?...



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