Weld torque boxes before installing LCAs?

triggz · 10-23-2007, 08:35 AM

I acquired a set of MMR ( http://www.modularmustangracing.com ) LCAs with poly sphereical bushings, they supposedly come from the same manufacturer as Granatelli's.

I've read that the increased load from the poly bushings can cause lots of bind and stress on the torque boxes, should I have the torque boxes welded up prior to installing the LCAs? Or install them and then do it, or not bother with it at all? I'll probably go ahead and get my axle tubes done and have my subframe welds touched up while I'm at it (got a few creeks in the backseat floorboard when I walk across it).

My car's auto and won't see a high stall converter for a while yet probably, the stock stall only hits 1.9 60's on drag radials and spray.

coupe · 10-23-2007, 11:10 AM

Being an auto, it's not as important...but I would still at least weld-up the seams around the torque boxes where there are spot-welds. Maybe add a forward plate up through the front of the box. Whatever you can do will help.

QWKSNKE · 10-23-2007, 08:52 PM

Quote:

Originally Posted by coupe

Being an auto, it's not as important...but I would still at least weld-up the seams around the torque boxes where there are spot-welds. Maybe add a forward plate up through the front of the box. Whatever you can do will help.

+1. Autos are a lot softer (even with a stall) on the suspension than a 5-speed

04 Mach1 · 10-24-2007, 06:23 AM

I'm sure the car has already seen its share of donuts and will proably have more to come atleast weld the seams.

BAD INT · 10-27-2007, 08:52 PM

Yes weld away I tore up a torque box on a bone stock car before its highly worth it and for the long run. remember low heat or you will blow threw the floor.

10-23-2007, 08:35 AM	#1
triggz Senior Member Join Date: Mar 2005 Posts: 245	Weld torque boxes before installing LCAs? I acquired a set of MMR ( http://www.modularmustangracing.com ) LCAs with poly sphereical bushings, they supposedly come from the same manufacturer as Granatelli's. I've read that the increased load from the poly bushings can cause lots of bind and stress on the torque boxes, should I have the torque boxes welded up prior to installing the LCAs? Or install them and then do it, or not bother with it at all? I'll probably go ahead and get my axle tubes done and have my subframe welds touched up while I'm at it (got a few creeks in the backseat floorboard when I walk across it). My car's auto and won't see a high stall converter for a while yet probably, the stock stall only hits 1.9 60's on drag radials and spray. __________________ 2000 Black on Black on Black 4R70W N2O GT Convertible times Stock rebuild 11/12/04 ....... 100shot 10/15/06 1/4: 14.08@99.32 ............. 1/4: 12.8@108 Horsepower for Charity dyno: 357rwhp/398rwtq sae

10-23-2007, 11:10 AM	#2
coupe Super Moderator Join Date: Dec 2004 Posts: 6,313	Being an auto, it's not as important...but I would still at least weld-up the seams around the torque boxes where there are spot-welds. Maybe add a forward plate up through the front of the box. Whatever you can do will help. __________________ " If you can't explain it simply, you don't understand it well enough. " - Albert Einstein

10-24-2007, 06:23 AM	#4
04 Mach1 Bet I red light B4U Join Date: Aug 2005 Location: ANNISTON, AL Posts: 975	I'm sure the car has already seen its share of donuts and will proably have more to come atleast weld the seams. __________________ 89 gt 2.3 stroked holley head with n12n port high flow intake with great big fart can skunk 2 seat belts with kool glow water squirters and new light up shift knob basically everything from wal-mart art carr C4 10.53@127.3 w/ 1.53 60' 89 gt vert 347 eldebrock heads and intake AOD w/3000 stall unknown with 5spd went 12.7 on steet tires 04 Mach1 automatic flowmaster K+N drop in 13.9

10-27-2007, 08:52 PM	#5
BAD INT Senior Member Join Date: Oct 2007 Posts: 184	Yes weld away I tore up a torque box on a bone stock car before its highly worth it and for the long run. remember low heat or you will blow threw the floor.