Alternator bracket ?? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Scott>72-GMC · 01-31-2013, 04:17 AM

I'm wondering what the correct alternator bracket is I jimmied this one on cause the one it came with didn't allow any adjustment but this one slams it against the valve covers. It's a 72 3/4 ton gmc not original engine I'm not sure what year it is Do you have pictures of your set ups ?? Thanks
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Scott>72-GMC · 01-31-2013, 04:20 AM

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JimKshortstep4x4 · 01-31-2013, 06:28 AM

Here is a picture of a stock 72 setup.

Jim

sanford&daughter · 01-31-2013, 09:17 AM

Cant see your lower bracket but the upper is not an original it looks like a universal mr gasket

hayhauler71 · 01-31-2013, 10:35 AM

no ac

Scott>72-GMC · 01-31-2013, 11:49 AM

I believe the bottom is correct but the top that it came with did not seem right at all. The one that's there I put on just to get it home.
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Scott>72-GMC · 01-31-2013, 11:49 AM

Is there a diffrence with/ without ac mine has ac
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Andy4639 · 01-31-2013, 12:24 PM

I don't know if it's correct year are not but it works fine and I have AC. I have spacers to make it line up correctly also. Been like this for 15 years with no belts ever being thrown off.

Scott>72-GMC · 01-31-2013, 12:29 PM

I'm not really going for year correct. From what I'm seeing. I'm thinking they had to short of a belt on cause it pulled the alternator clear back against the valve covers with no adjustment
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RHGuyettejr · 01-31-2013, 10:42 PM

If you are using that bracket, go to autozone, or advanced auto and have them reference the belt #, there are 2 options, go with the one that is like 1/2" longer. I can't remember what the length was (I want to say 50 something inches?) I just did this too. My po had one that was way too long on it. I got the longer belt and there is just enough slack to get it on with the alternator against the valve covers, then adjust it out.

Sorry that's the best pic I have right now.

Scott>72-GMC · 01-31-2013, 10:48 PM

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If you can see the bolt hole at the front of the manifold that is where the po had the bracket mounted which from ur guys pictures is wrong for this year guessing it was an 80s engine
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01-31-2013, 04:17 AM	#1
Scott>72-GMC Registered User Join Date: Jan 2013 Location: New providence ia Posts: 1,018	Alternator bracket ?? I'm wondering what the correct alternator bracket is I jimmied this one on cause the one it came with didn't allow any adjustment but this one slams it against the valve covers. It's a 72 3/4 ton gmc not original engine I'm not sure what year it is Do you have pictures of your set ups ?? Thanks Posted via Mobile Device Attached Images

01-31-2013, 04:20 AM	#2
Scott>72-GMC Registered User Join Date: Jan 2013 Location: New providence ia Posts: 1,018	Re: Alternator bracket ?? Posted via Mobile Device Posted via Mobile Device Posted via Mobile Device Attached Images

01-31-2013, 06:28 AM	#3
JimKshortstep4x4 Senior Member Join Date: Jul 2001 Location: Muskegon,MI,USA Posts: 6,026	Re: Alternator bracket ?? Here is a picture of a stock 72 setup. Jim Attached Images __________________ 1971 Shortbox step side 4x4, 350 sbc, 3:07 rear end 1965 Impala SS 400 sbc, Muncie rock crusher 1966 Impala SS 396 bbc, TH 400 1969 El Camino, 350 sbc, TH 350 1971 Snowplow built on a Blazer frame 1972 GMC Short bed, stepside, TH 400, 427 BBC

01-31-2013, 09:17 AM	#4
sanford&daughter Registered User Join Date: Dec 2012 Location: Upstate , New York Posts: 647	Re: Alternator bracket ?? Cant see your lower bracket but the upper is not an original it looks like a universal mr gasket

01-31-2013, 10:35 AM	#5
hayhauler71 Registered User Join Date: Aug 2009 Location: St. Paul MN. Posts: 1,996	Re: Alternator bracket ?? no ac Attached Images __________________ Fuzzy

01-31-2013, 11:49 AM	#6
Scott>72-GMC Registered User Join Date: Jan 2013 Location: New providence ia Posts: 1,018	Re: Alternator bracket ?? I believe the bottom is correct but the top that it came with did not seem right at all. The one that's there I put on just to get it home. Posted via Mobile Device

01-31-2013, 11:49 AM	#7
Scott>72-GMC Registered User Join Date: Jan 2013 Location: New providence ia Posts: 1,018	Re: Alternator bracket ?? Is there a diffrence with/ without ac mine has ac Posted via Mobile Device

01-31-2013, 12:24 PM	#8
Andy4639 Old member Join Date: Jan 2002 Location: Liberty, & Garden City S.C. , U.S. Posts: 19,945	Re: Alternator bracket ?? I don't know if it's correct year are not but it works fine and I have AC. I have spacers to make it line up correctly also. Been like this for 15 years with no belts ever being thrown off. __________________ 1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs.

01-31-2013, 12:29 PM	#9
Scott>72-GMC Registered User Join Date: Jan 2013 Location: New providence ia Posts: 1,018	Re: Alternator bracket ?? I'm not really going for year correct. From what I'm seeing. I'm thinking they had to short of a belt on cause it pulled the alternator clear back against the valve covers with no adjustment Posted via Mobile Device

01-31-2013, 10:42 PM	#10
RHGuyettejr Registered User Join Date: Jun 2012 Location: Keene, NH Posts: 235	Re: Alternator bracket ?? If you are using that bracket, go to autozone, or advanced auto and have them reference the belt #, there are 2 options, go with the one that is like 1/2" longer. I can't remember what the length was (I want to say 50 something inches?) I just did this too. My po had one that was way too long on it. I got the longer belt and there is just enough slack to get it on with the alternator against the valve covers, then adjust it out. Sorry that's the best pic I have right now.

01-31-2013, 10:48 PM	#11
Scott>72-GMC Registered User Join Date: Jan 2013 Location: New providence ia Posts: 1,018	Re: Alternator bracket ?? Posted via Mobile Device If you can see the bolt hole at the front of the manifold that is where the po had the bracket mounted which from ur guys pictures is wrong for this year guessing it was an 80s engine Posted via Mobile Device Attached Images __________________ 72 GMC super custom.



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