72 M/C on a 67 power booster and other ? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

screamin_c10 · 11-28-2009, 07:04 PM

Trying to get all my ducks in a row for my body swap. I'll be putting Bessie's 67 C20 body on a 72 GMC C1500 (C10) frame.

Can I use the power brake booster from the C20 and bolt the 72 disk/drum MC and PV to it without any issues?

Should I use 67/68 core support mounts or should I use 69-72 mounts to match the frame?

Should I use 3/4 ton cab mounts or should I use the 1/2 ton mounts to match the frame?

Any thoughts on this would be greatly appreciated.

**john** · 11-28-2009, 07:44 PM

You will want to match the core support and body mounts to the frame used.

mclairmo · 11-28-2009, 08:04 PM

I believe you can use the C20 booster but just make sure that the rod coming from the booster that goes into the M/C is not too short. It needs to just barely bottom out in the end of the master cylinder bore piston. I believe you must use the C20 cab mounts because the C20 mounts are farther up on the cab and you will need the thicker C20 cab mounts to create the proper distance. Use the 69-72 core support mounts.

11-28-2009, 07:04 PM	#1
screamin_c10 I dun gradjiated collij!!! Join Date: Jan 2006 Location: St. Helens Oregon Posts: 1,751	72 M/C on a 67 power booster and other ? Trying to get all my ducks in a row for my body swap. I'll be putting Bessie's 67 C20 body on a 72 GMC C1500 (C10) frame. Can I use the power brake booster from the C20 and bolt the 72 disk/drum MC and PV to it without any issues? Should I use 67/68 core support mounts or should I use 69-72 mounts to match the frame? Should I use 3/4 ton cab mounts or should I use the 1/2 ton mounts to match the frame? Any thoughts on this would be greatly appreciated. __________________ Built NOT Bought. Viper Red 1971 LWB C10 355 Vortec W/700R4 4/5 drop AKA Screamin' You are missed! 2006 F150 XLT 5.4L Triton Rollin' on 22s the "F1" 67 C20 PS/AC/327/TH400 we call 'er "Bessie" 67 Malibu PS/ZR1-LS1 Brakes/350 Vortec/700R4 2/2 drop on 18" 338s - Tracy's "Boo" Boosted '67 Cougar EFI 5.0 HO roller motor/T5/8.8 Tracloc/ 4 wheel disks - "Project Panther" 79 Honda Z50 - stretched, cafe'd and hotrodded 125CC Lifan/5spd FEAR THE MONKEY! Last edited by screamin_c10; 11-28-2009 at 07:05 PM.

11-28-2009, 07:44 PM	#2
john member #16 Join Date: Dec 1999 Location: Yuba City Ca. Posts: 3,618	Re: 72 M/C on a 67 power booster and other ? You will want to match the core support and body mounts to the frame used. __________________ john http://67-72chevytrucks.com/vboard/showgroups.php board vendors http://www.flickr.com/photos/1745471...7602865984234/

11-28-2009, 08:04 PM	#3
mclairmo Registered User Join Date: Jan 2006 Location: Take Off Posts: 1,908	Re: 72 M/C on a 67 power booster and other ? I believe you can use the C20 booster but just make sure that the rod coming from the booster that goes into the M/C is not too short. It needs to just barely bottom out in the end of the master cylinder bore piston. I believe you must use the C20 cab mounts because the C20 mounts are farther up on the cab and you will need the thicker C20 cab mounts to create the proper distance. Use the 69-72 core support mounts.



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