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07-02-2006, 07:12 AM
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#1 |
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Registered User
Join Date: Jan 2005
Location: tasmania.australia
Posts: 170
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grinding calipers
is it normal to have to grind the front calipers on a 79' k20 when fitting 15'' rims?
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07-02-2006, 08:49 AM
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#2 |
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Special Order
  
Join Date: Nov 2004
Location: Mt Airy, MD
Posts: 85,862
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Re: grinding calipers
Yes.I did it years ago.Doesn`t need much off and it won`t hurt a thing.
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"BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~ |
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07-02-2006, 10:05 AM
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#3 | |
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Registered User
Join Date: Oct 2003
Location: Central Vermont
Posts: 8,538
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Re: grinding calipers
Quote:
 just pay attention to the heat generated by the grinder.Wouldn't want to melt a seal or anything... 
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07-04-2006, 12:54 AM
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#4 |
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Registered User
Join Date: Jun 2003
Location: spokane wa
Posts: 2,189
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Re: grinding calipers
Try fitting 15" aluminum on one ton running gear.. My Old blazer had a dana 60 in the front.. I grinded for what seemed like days.. Eventually mud and dirt machined the rest off.. Of the rim...
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07-04-2006, 02:52 AM
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#5 |
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Registered User
Join Date: Jan 2005
Location: tasmania.australia
Posts: 170
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Re: grinding calipers
im starting to think it might be easier to go to a larger diameter rim(16"-16.5")
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07-04-2006, 07:44 AM
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#6 |
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Special Order
Join Date: Nov 2004
Location: Mt Airy, MD
Posts: 85,862
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Re: grinding calipers
No...it`s no big deal,really.Drinktomany is talking about a 1-ton front axle that is bigger yet.And,it did work,I guess.I`m telling you,I did it and drove the truck for years like that.The truck was a`71 K/20,the wheels were 10x15 steel wagon wheels,and the tires were 37/14.50x15s.It takes alot to stop a tire like that,and it was no problem.It took longer to bolt the tires on than grind the calipers.Basically,it`s just the ridge from the casting that needs ground.
__________________
"BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~ |
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07-04-2006, 07:49 AM
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#7 | |
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Registered User
Join Date: Oct 2003
Location: Central Vermont
Posts: 8,538
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Re: grinding calipers
Quote:
 K-20, I've been running 16.5's on my 1 ton gear and finding the right tire hasn't really been an issue to date. Definitely want bead locks with em though. Got any pics of your truck? |
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07-05-2006, 05:00 AM
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#8 | |
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Registered User
Join Date: Jan 2005
Location: tasmania.australia
Posts: 170
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Re: grinding calipers
Quote:
Last edited by k-20; 07-05-2006 at 05:38 AM. |
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07-05-2006, 05:49 PM
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#9 |
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Registered User
Join Date: Mar 2005
Location: Just outside Durham, NC
Posts: 894
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Re: grinding calipers
My truck actually has 2wd calipers (not sure if they were smaller or not). But he PO was running 15" rims, and the clearance grinds are almost nothing, it looks like two grinds on either side of the casting parting line....maybe 1/8" deep at most.
Grinding to fit banjo fittings on.....not as common, but I have had to do that too!
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1969 SS 350 Camaro Sold 2008 1970 3/4T K20, stock height with 33's, 250 I6, 3 on the tree, and locked front and rear 4.10's  1980 Chevy Malibu 2 dr Sold 2007 1993 Olds. Cutlass Ciera Wagon Traded 2006 2003 Saturn L200 w/5pd. D/D My list spans 5 decades with One common thread.....GM! |
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07-06-2006, 06:39 AM
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#10 |
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Special Order
Join Date: Nov 2004
Location: Mt Airy, MD
Posts: 85,862
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Re: grinding calipers
On the`71 K/20 I ground calipers to clear 15" rims on,I had to replace a caliper once because the bleeder froze.I found one in the junkyard.In the cross-over book it listed the calipers as the same part as found on a late-60s full-size Pontiac.Remember,`71 was first year on trucks.Well,I pulled one off a`69 Catalina and it was the same part.I put it on,did the grind,and ran her for years.Just a little tidbit on calipers.
 Hey k-20,I want to bring my trucks & parts to Australia and start a new life. 
__________________
"BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~ |
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07-06-2006, 06:48 AM
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#11 |
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Registered User
Join Date: Jan 2005
Location: tasmania.australia
Posts: 170
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Re: grinding calipers
come over special-k,got plenty of room in the back yard!
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07-06-2006, 10:20 PM
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#12 |
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Special Order
Join Date: Nov 2004
Location: Mt Airy, MD
Posts: 85,862
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Re: grinding calipers
I promise not to try to sound Australian,that`s got to be annoying to hear us try.
 I`ll just do my best John Wayne.
__________________
"BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~ |
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