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02-23-2020, 08:52 PM | #1 |
Registered User
Join Date: Jul 2017
Location: Dripping Springs
Posts: 40
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Alternative alternator bracket?
I have to stock 2 piece alternator bracket, and it's a total pain in the ass. The long top provides almost no support and the alternator ends up vibrating violently. I've been driving with it for a year now so it's not an emergency, but it pisses me off. Another thing, the bracket is not long enough to completely clear my valve covers, so the alternator rests on the side of the cover. When it vibrates it makes a loud metallic clanking noise that... is less than ideal.
I'm just wondering if anyone has had this problem and what they did to solve it? On another note, I added an aluminum bracket (piece of 1/8" sheet, bent and twisted) to the back of the alternator extending to the #1 cylinder exhaust bolt. It helps a tiny bit but not enough to make the alternator stop vibrating and rattling against my cover. Will include pics later. |
02-23-2020, 09:06 PM | #2 |
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Join Date: Dec 1999
Location: Austin, TX, USA
Posts: 7,723
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Re: Alternative alternator bracket?
Interesting. I have 350,000 miles on my Jimmy OEM alternator setup and it is rock solid. It's the same setup used on C3 Corvettes from 69-82 and had no issue with the SHP motors that would pull nearly 7000 rpm with the 70 LT-1.
I would start trouble shooting to figure out what is wrong with your setup and correct that before re-inventing the wheel. Whether the bracket is broken, misaligned or something else going on.
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44 Willys MB 52 M38A1 64 Corvette Coupe 68 Camaro 'vert LT1 & TH700 69 Z/28 355 12.6's @110 69 Chevy Short Step 4 1/2"/7" drop 72 Jimmy 4WD 4spd 4" & 35's 02 GMC 2500HD 4x4 Duramax |
02-23-2020, 09:23 PM | #3 | ||
"I ain't nobody, dork."
Join Date: Sep 2007
Location: Whidbey Island, Washington
Posts: 8,947
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Re: Alternative alternator bracket?
I have the stock alternator brackets on my 1972 with a stock alternator. It works just fine with no wonky vibrations. You need a bit longer fan belt if the alternator won't swing out far enough to clear the valve covers.
Gary
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'cuz chicks dig scars... My 1972 GMC 1500 Super Custom (Creeping Death) "long term" build thread. The Rebuild of Creeping Death after the wreck Quote:
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02-23-2020, 09:32 PM | #4 |
Old member
Join Date: Jan 2002
Location: Liberty, & Garden City S.C. , U.S.
Posts: 19,945
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Re: Alternative alternator bracket?
Is this a small water pump setup are long water pump? The tall valve covers will not let the factory brackets fit right. You will need to make adjustments for them.
Pictures would help.
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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. |
02-23-2020, 10:10 PM | #5 |
Senior Member
Join Date: Aug 2003
Location: Conyers,Ga.
Posts: 7,287
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Re: Alternative alternator bracket?
There are 2 different length upper brackets also which might help with valve cover problem.
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02-23-2020, 10:31 PM | #6 |
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Join Date: Dec 2013
Location: Gods country East,Tn
Posts: 8,545
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Re: Alternative alternator bracket?
Here are the 2 different upper brackets .
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1967 Factory short bed - Old school '71 - 350 / 4bolt / 487 heads / Edelbrock C3BX Muncie M-22 4 speed / Hurst Comp plus Factory 12 bolt posi 3.73 / 255-70-15 Smoothed firewall / Factory cowl induction Power disc brakes / power steering / 3.5-5" drop |
02-24-2020, 09:44 AM | #7 |
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Join Date: Mar 2000
Location: Saskatoon,SK,Canada
Posts: 2,476
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Re: Alternative alternator bracket?
I'll ditto the no problems With mine. On n my old 72 with stock brackets it always been rock solid and I run a modern 105 on it with significantly higher loading than stock. A couple hundred thou on the old girl. Perhaps send us a pic of your set up.
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Saskatoon, Saskatchewan Canada |
02-24-2020, 11:39 AM | #8 |
Old member
Join Date: Jan 2002
Location: Liberty, & Garden City S.C. , U.S.
Posts: 19,945
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Re: Alternative alternator bracket?
Is this your type of setup?
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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. |
01-13-2021, 09:31 AM | #9 |
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Join Date: Feb 2018
Location: Snellville GA
Posts: 104
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Re: Alternative alternator bracket?
My apologies for resurrecting and old thread but this is the best result from my searching. I am looking for the bracket shown in my picture that looks to match up with the ones in thread. Can anyone tell me where i can find one to purchase? I dont need the lower cast bracket that bolts to the head, just the upper adjuster bracket. I've searched the interweb and the closest match seems to be from a C2 Corvette, which makes it more expensive.
Thanks for your help. |
01-13-2021, 11:13 AM | #10 | |
Old member
Join Date: Jan 2002
Location: Liberty, & Garden City S.C. , U.S.
Posts: 19,945
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Re: Alternative alternator bracket?
Quote:
https://www.google.com/search?q=c+10...w=1366&bih=625 https://www.cjponyparts.com/alternat...1966/p/ALTB49/ https://www.classicparts.com/1963-66...gaAmSuEALw_wcB https://www.speedwaymotors.com/Chrom...UaAkWNEALw_wcB
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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. |
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01-13-2021, 12:43 PM | #11 |
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Join Date: Feb 2010
Location: rochelle il.
Posts: 355
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Re: Alternative alternator bracket?
Put this in the parts section as a wtb. I bought the same one off there worked good and reasonable.
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01-13-2021, 04:36 PM | #12 |
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Join Date: Jun 2005
Location: Winona Lake, IN
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Re: Alternative alternator bracket?
Gotta be a subscribing member to post on the parts boards.
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70 C/10 SWB 402/TH400/3.73 "The Needy Beast" 200,000 Mile Club Disc Brake Club Owner installed options: Front Sway Bar Power Steering Power Brakes Cigar Lighter Courtesy Lights Deluxe Side Markers Wiper Delay Sliding Rear Window Power Windows Power Locks Sniper EFI 2015 Silverado 1500 LS 4.3/6L80/3.23 lowered 2" front & rear |
01-14-2021, 08:29 AM | #13 | |
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Join Date: Feb 2018
Location: Snellville GA
Posts: 104
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Re: Alternative alternator bracket?
Quote:
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alternator, bracket, general, rattling, vibrating |
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