Correct alternator bracket - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Coalkracker · 08-23-2017, 07:43 PM

What is the correct style alternator bracket for a 1970 c10 without power steering or a.c. My local parts stores don't list an own style just chrome ones of all different styles. My truck was missing it when I purchased it so I don't have anything to go by.

**'68OrangeSunshine** · 08-23-2017, 07:46 PM

V8 or L6?
If V8, BBC or SBC? Long water pump or short water pump?

Coalkracker · 08-23-2017, 08:18 PM

307 v8 with short water pump

**70cst** · 08-23-2017, 08:43 PM

Bump ... the answer is?

**'68OrangeSunshine** · 08-23-2017, 09:42 PM

Here's the 350 V8 SBC w/short water pump in my '71 GMC Jimmy. I have one of those chrome thingies, but it works. The OEM was the same but black.

Coalkracker · 08-23-2017, 09:48 PM

Thanks for the resonse... My intake manifold doesn't have a threaded hole for the bracket though. It almost appears that it should only bolt to the head for the upper bracket and possibly the block for the lower bracket.

Coalkracker · 08-23-2017, 09:53 PM

You can see the 3 holes in the driver side head

Mike C · 08-23-2017, 09:53 PM

It should look like this:

B. W. · 08-23-2017, 11:51 PM

X2 - not a great picture but here it is anyway:
(I know, this one has P/S)

**'68OrangeSunshine** · 08-24-2017, 12:58 AM

I guess there's more than one way to skin a cat. Looks like you need one like MikeC 's.

Coalkracker · 08-24-2017, 06:43 AM

I like the one that Mike c posted but it's a little pricey at 85 dollars. How does the bottom mount on yours? Does the bracket bolt into the block below the heads or is it all one piece?

Andy4639 · 08-24-2017, 08:17 AM

A lot of GM 60's model car will have these brackets if they have a V-8 in them.

**VetteVet** · 08-24-2017, 11:42 AM

Quote:

Originally Posted by Andy4639

A lot of GM 60's model car will have these brackets if they have a V-8 in them.

jesus! $85 bucks, I better go clean mine up.

Andy4639 · 08-24-2017, 04:03 PM

Quote:

Originally Posted by VetteVet

jesus! $85 bucks, I better go clean mine up.

Mike C · 08-25-2017, 08:25 AM

I've been buying parts for my Corvette to put a big block in it with power steering. The $225 that bracket costs is expensive. Truck parts is cheap! Relatively speaking at least.

**VetteVet** · 08-25-2017, 12:41 PM

Quote:

Originally Posted by Mike C

I've been buying parts for my Corvette to put a big block in it with power steering. The $225 that bracket costs is expensive. Truck parts is cheap! Relatively speaking at least.

I'm confused. The bracket you posted bolts to the front of the cylinder head and your 64 heads aren't drilled, or are they, My 74 heads are drilled, but if yours are not then you'll need a different bracket. If you're putting in a BB the bracket probably won't be the same anyhow. ???????

Mike C · 08-25-2017, 08:44 PM

The picture I posted was just the most clear I could find on the web of what he wanted. As I said above, swapping a 427 into my small block 64 and having to piece together the accessory drive. That along with building another 427 for my 69 short step and learning all of the parts needed for a truck conversion I am the guru of big block short pump pulleys and brackets now... And I have paid handsomely for that knowledge.

I'm just commenting about price referencing the 'vette bracket. There is nothing the same about the Corvette Big Block power steering / alternator bracket shared with anything else. Because of how compact the space, the PS is driven from the crank, then the second pulley groove on the PS drives the alternator. The alternator is not directly connected to the crank pulley on a big block Corvette.

Unlike other big block PS setups that drive from the 3rd groove (Camaro, Chevelle, Truck) the 'vette BB drives from the 2nd groove pulley. The 65-68 Chevelle uses the same PS/alternator setup as the 68-72 trucks. Mostly.

**VetteVet** · 08-25-2017, 08:58 PM

Ok thanks for the clarification.

Andy4639 · 08-25-2017, 08:59 PM

Quote:

Originally Posted by Andy4639

Vette,

I cleaned this set up and installed on my 64 SS Impala.

08-23-2017, 07:43 PM	#1
Coalkracker Registered User Join Date: Jul 2017 Location: Pa Posts: 134	Correct alternator bracket What is the correct style alternator bracket for a 1970 c10 without power steering or a.c. My local parts stores don't list an own style just chrome ones of all different styles. My truck was missing it when I purchased it so I don't have anything to go by.

08-23-2017, 07:46 PM	#2
'68OrangeSunshine Senior Member Join Date: Feb 2002 Location: Tucson, AZ USA Posts: 7,164	Re: Correct alternator bracket V8 or L6? If V8, BBC or SBC? Long water pump or short water pump? __________________ Every 25 years I like to rebuild that 292, whether it needs it or not.

08-23-2017, 08:18 PM	#3
Coalkracker Registered User Join Date: Jul 2017 Location: Pa Posts: 134	Re: Correct alternator bracket 307 v8 with short water pump

08-23-2017, 08:43 PM	#4
70cst Senior Member Join Date: Feb 2001 Location: New Madison, Ohio Posts: 21,365	Re: Correct alternator bracket Bump ... the answer is? __________________ A husband can be right...or...A husband can be happy. 67-72 Chevy and GMC Trucks...The Classic Truck for the Classic Folk. 1970 CST Two tone green, 402BB, 400 Automatic, Tach, Buckets, AC, AM-FM, Tilt, GM CB, GM 8 Tract, LWB, etc JOHN 17:3...The better side of "LIFE" Remember: Everyday is a good day...Some are just gooder!

08-23-2017, 09:42 PM	#5
'68OrangeSunshine Senior Member Join Date: Feb 2002 Location: Tucson, AZ USA Posts: 7,164	Re: Correct alternator bracket Here's the 350 V8 SBC w/short water pump in my '71 GMC Jimmy. I have one of those chrome thingies, but it works. The OEM was the same but black. Attached Images __________________ Every 25 years I like to rebuild that 292, whether it needs it or not.

08-23-2017, 09:48 PM	#6
Coalkracker Registered User Join Date: Jul 2017 Location: Pa Posts: 134	Re: Correct alternator bracket Thanks for the resonse... My intake manifold doesn't have a threaded hole for the bracket though. It almost appears that it should only bolt to the head for the upper bracket and possibly the block for the lower bracket.

08-23-2017, 09:53 PM	#7
Coalkracker Registered User Join Date: Jul 2017 Location: Pa Posts: 134	Re: Correct alternator bracket You can see the 3 holes in the driver side head Attached Images

08-23-2017, 09:53 PM	#8
Mike C Registered User Join Date: Dec 1999 Location: Austin, TX, USA Posts: 7,715	Re: Correct alternator bracket It should look like this: __________________ 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

08-23-2017, 11:51 PM	#9
B. W. Registered User Join Date: Nov 2014 Location: Bigfork, Montana Posts: 1,137	Re: Correct alternator bracket X2 - not a great picture but here it is anyway: (I know, this one has P/S) Attached Images

08-24-2017, 12:58 AM	#10
'68OrangeSunshine Senior Member Join Date: Feb 2002 Location: Tucson, AZ USA Posts: 7,164	Re: Correct alternator bracket I guess there's more than one way to skin a cat. Looks like you need one like MikeC 's. __________________ Every 25 years I like to rebuild that 292, whether it needs it or not.

08-24-2017, 06:43 AM	#11
Coalkracker Registered User Join Date: Jul 2017 Location: Pa Posts: 134	Re: Correct alternator bracket I like the one that Mike c posted but it's a little pricey at 85 dollars. How does the bottom mount on yours? Does the bracket bolt into the block below the heads or is it all one piece?

08-24-2017, 08:17 AM	#12
Andy4639 Old member Join Date: Jan 2002 Location: Liberty, & Garden City S.C. , U.S. Posts: 19,936	Re: Correct alternator bracket A lot of GM 60's model car will have these brackets if they have a V-8 in them. Attached Images __________________ 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.

08-25-2017, 08:25 AM	#15
Mike C Registered User Join Date: Dec 1999 Location: Austin, TX, USA Posts: 7,715	Re: Correct alternator bracket I've been buying parts for my Corvette to put a big block in it with power steering. The $225 that bracket costs is expensive. Truck parts is cheap! Relatively speaking at least. __________________ 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

08-25-2017, 08:44 PM	#17
Mike C Registered User Join Date: Dec 1999 Location: Austin, TX, USA Posts: 7,715	Re: Correct alternator bracket The picture I posted was just the most clear I could find on the web of what he wanted. As I said above, swapping a 427 into my small block 64 and having to piece together the accessory drive. That along with building another 427 for my 69 short step and learning all of the parts needed for a truck conversion I am the guru of big block short pump pulleys and brackets now... And I have paid handsomely for that knowledge. I'm just commenting about price referencing the 'vette bracket. There is nothing the same about the Corvette Big Block power steering / alternator bracket shared with anything else. Because of how compact the space, the PS is driven from the crank, then the second pulley groove on the PS drives the alternator. The alternator is not directly connected to the crank pulley on a big block Corvette. Unlike other big block PS setups that drive from the 3rd groove (Camaro, Chevelle, Truck) the 'vette BB drives from the 2nd groove pulley. The 65-68 Chevelle uses the same PS/alternator setup as the 68-72 trucks. Mostly. __________________ 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

08-25-2017, 08:58 PM	#18
VetteVet Msgt USAF Ret Join Date: Jan 2005 Location: Kalamazoo, Michigan Posts: 8,709	Re: Correct alternator bracket Ok thanks for the clarification. __________________ VetteVet metallic green 67 stepside 74 corvette convertible 1965 Harley sportster 1995 Harley wide glide Growing old is hell, but it beats the alternative.



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