cab mounts too tall? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

shade67 · 01-03-2010, 12:55 AM

I rebuilt my cab with new rockers and floors. I put in urethane bushings and now I'm in the process of lineing up the doors and fenders. BUT, the radiator support is too low when bolted to frame with the correct 67-68 radiator support mount set. If I mount it higher then the grille assy. is too high for the bumper to bolt on. Where did I go wrong- I used 1/2t bushing set.

beautimus · 01-03-2010, 03:19 AM

did you change the core support mounts ?
over time all the mounts compress at the same rate, so if you didn't change the rubber mounts under the core support you can expect to be off 1/2 to 3/4 of an inch. also if you used polyurethane mount cushions you can expect the problem to be even worse. another note is after you get the cab and core support lined up you may have to put shims under the bed to keep it from looking to low. good luck !!

67chevy2wd · 01-03-2010, 03:30 AM

Do you have 4x4 cab mounts or 2wd cab mounts? The 4x4 cab mounts sit taller.

Longhorn Man · 01-03-2010, 10:13 AM

actually, I think the only differance between the 1/2 ton 2 wheel drive bushings, and the part number for all other trucks, is in the rear cab bushings. I think the front ones are the same.

suville · 01-03-2010, 10:25 AM

60-68 core support mounting hardware is not the same as 69-72, you should be able to shim with large diameter washers the amount necessary to achieve the alignment. If you can do pics it might help to address your fitment issues.

01-03-2010, 12:55 AM	#1
shade67 Registered User Join Date: Jan 2004 Location: Portage, WI Posts: 89	cab mounts too tall? I rebuilt my cab with new rockers and floors. I put in urethane bushings and now I'm in the process of lineing up the doors and fenders. BUT, the radiator support is too low when bolted to frame with the correct 67-68 radiator support mount set. If I mount it higher then the grille assy. is too high for the bumper to bolt on. Where did I go wrong- I used 1/2t bushing set. __________________ Scott 66 chevy short step 327 4speed 67 chevy Short Fleet tpi 350 700r4 72 chevy K10 swb 01 GMC Sierra 01 Pontiac Bonneville

01-03-2010, 03:19 AM	#2
beautimus Registered User Join Date: Mar 2002 Location: woodstock, alabama, usa Posts: 938	Re: cab mounts too tall? did you change the core support mounts ? over time all the mounts compress at the same rate, so if you didn't change the rubber mounts under the core support you can expect to be off 1/2 to 3/4 of an inch. also if you used polyurethane mount cushions you can expect the problem to be even worse. another note is after you get the cab and core support lined up you may have to put shims under the bed to keep it from looking to low. good luck !! __________________ i survived cancer and kidney stones, but my kids are killing me.

01-03-2010, 03:30 AM	#3
67chevy2wd Registered User Join Date: Sep 2003 Location: New Salem, ND Posts: 1,558	Re: cab mounts too tall? Do you have 4x4 cab mounts or 2wd cab mounts? The 4x4 cab mounts sit taller. __________________ 07 Chevy classic LBZ Duramax (a few mods) '67 Chevy 1/2 ton 2wd (in pieces) '69 Chevy 1/2 ton 2wd (on hold) '71 GMC 3/4 ton 4x4 ‘71 GMC 1/2 ton 2wd suburban

01-03-2010, 10:13 AM	#4
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: cab mounts too tall? actually, I think the only differance between the 1/2 ton 2 wheel drive bushings, and the part number for all other trucks, is in the rear cab bushings. I think the front ones are the same.

01-03-2010, 10:25 AM	#5
suville Registered User Join Date: Jun 2003 Location: Mtn. Home, Idaho Posts: 906	Re: cab mounts too tall? 60-68 core support mounting hardware is not the same as 69-72, you should be able to shim with large diameter washers the amount necessary to achieve the alignment. If you can do pics it might help to address your fitment issues.



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