The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - c notch already in, want to move trailing arm crossmember back

SCOTI · 08-29-2010, 12:26 PM

With the bolt-in style c-notches for the 6x-72 'curved' frames, there is some wiggle room (per Ken's description

).

There's 2 ways to alter the C/L of the axle in the wheel-well opening: 1) move the rear back; 2) move the body forward. You can shift the bed as far forward as possible for some of the amount needed.

If I recall, my 68 had the axle tubes toward the front of the c-notch @ full drop (no springs/bags). So moving the rear back .500 ~ 1.00" should possibly be do-able (not all trucks are the same). I don't think you'll get more than an inch w/the bolt-in style c-notches.

But, add the bed shift forward w/a .500-.750" rear end repositioning & you might hit the sweet spot you're seeking.

What truck arm c.member are you using? What drop components?

08-29-2010, 12:26 PM	#8
SCOTI Registered User Join Date: Apr 2001 Location: DALLAS,TX Posts: 22,136	Re: c notch already in, want to move trailing arm crossmember back With the bolt-in style c-notches for the 6x-72 'curved' frames, there is some wiggle room (per Ken's description ). There's 2 ways to alter the C/L of the axle in the wheel-well opening: 1) move the rear back; 2) move the body forward. You can shift the bed as far forward as possible for some of the amount needed. If I recall, my 68 had the axle tubes toward the front of the c-notch @ full drop (no springs/bags). So moving the rear back .500 ~ 1.00" should *possibly* be do-able (not all trucks are the same). I don't think you'll get more than an inch w/the bolt-in style c-notches. But, add the bed shift forward w/a .500-.750" rear end repositioning & you might hit the sweet spot you're seeking. What truck arm c.member are you using? What drop components? __________________ 67SWB-B.B.RetroRod 64SWB-Recycle 89CCDually-Driver/Tow Truck 99CCSWB Driver All Fleetsides @rattlecankustoms in IG Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive. It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar..... *Cubic inches is like Indiana Jones with a cheap pistol.*