12si Alternator Bracket Question - Team Camaro Tech
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post #1 of 12 (permalink) Old May 16th, 11, 05:35 PM Thread Starter
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Al
 
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12si Alternator Bracket Question

Hi guys -

I'm considering installing a 12si alt on my 69 SB long waterpump setup. Does anyone have a source for the correct rear support spacer/bracket that is outlined in this article? http://www.hotrod.com/techarticles/m.../photo_21.html The GM part # mentioned has been discontinued, and I'd rather not modify my existing bracket. Thanks in advance!


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post #2 of 12 (permalink) Old May 16th, 11, 06:52 PM
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Re: 12si Alternator Bracket Question

You could not bolt up the extension and just use the bracket as an extension from the head. This is the action I took on my previously owned '88 MCSS and had no problems.

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post #3 of 12 (permalink) Old May 16th, 11, 07:07 PM
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Re: 12si Alternator Bracket Question

Al, you can use the March knockoff that Skip White sells and it's what I have. It comes with a lower mount and uses a heim joint for belt adjustment. Might be a little flashy for you though but you could rub some dirt on it.

http://cgi.ebay.com/ebaymotors/SBC-C...Q5fAccessories




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post #4 of 12 (permalink) Old May 16th, 11, 09:30 PM Thread Starter
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Re: 12si Alternator Bracket Question

Thanks guys.

That looks nice Steiner - but I'm afraid it doesn't fit in with my grunge theme.

I was reading the tech ref series above, and they made it sound like that rear support was pretty important for long bearing life.

I found one guy who's selling the GM bracket - in England. Sheesh.

I went to a local GM only salvage yard today thinking for sure they'd have one, and no dice there. You'd think they'd be on J-hooks at 7-Eleven - I'm sure they made about a billion of them.

I'll keep lookin'!


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post #5 of 12 (permalink) Old May 16th, 11, 09:48 PM
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Re: 12si Alternator Bracket Question

You ready to make out with me? Look at what might be under my house. I think I gave it away already but if so I know who to and can see if he still has it.



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post #6 of 12 (permalink) Old May 16th, 11, 10:32 PM Thread Starter
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Re: 12si Alternator Bracket Question

How 'bout we just wrestle instead?

That does look like the bracket I covet, and I assume the same bracket fits a 10si and a 12si.

Thanks and keep me posted!


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post #7 of 12 (permalink) Old May 16th, 11, 10:45 PM
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Re: 12si Alternator Bracket Question

Yeah, 10 and 12 bolt up the same. I'm not at home now but will check in the morning and if it's not there I'll give the guy a call.

There's a spot behind my house where I throw scrap metal to weather until I get a decent load to take to the scrap yard. If I wind up being able to get the bracket, I'll rake around there and see if I can find a bolt that's up to your standards to go with it.

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TKO 600-Moser 3.42-Detroit Truetrac
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post #8 of 12 (permalink) Old May 16th, 11, 11:03 PM
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Re: 12si Alternator Bracket Question

You can also keep an eye on eBay, I have bought a couple of sets for $20 or so. I think I may have one of those but it seems like every build I need something a little different so I have started a bracket collection.

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post #9 of 12 (permalink) Old May 17th, 11, 06:48 AM
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Re: 12si Alternator Bracket Question

Larry may have to hook you up, Al. I called they guy I gave my alt to and he said he thinks it wound up at a swap meet. However he did say that just like Larry he had a bracket collection. I sent him the same picture as above (he knew what I was talking about) and he said he'd look through what he had this afternoon and give me one if he had it. On another note, I found the starter bracket we were talking about if you need one.

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Dart 400-AFR 195-224/224 HR-Powerjection III TB with F.A.S.T. Sportsman XFI
TKO 600-Moser 3.42-Detroit Truetrac
500hp/538lbft

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post #10 of 12 (permalink) Old May 17th, 11, 07:21 AM
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Re: 12si Alternator Bracket Question

Here is one on EBAY.

http://cgi.ebay.com/ebaymotors/GM-Ch...Q5fAccessories

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post #11 of 12 (permalink) Old May 17th, 11, 12:54 PM Thread Starter
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Re: 12si Alternator Bracket Question

Hey guys - thanks for the info!

Steiner - I modified my original starter brace by welding a tab onto it and drilling a hole - it's installed and will work just fine - thanks for the offer!

Larry - thanks for the e-bay tip! (see below)

Mike - I had looked at that one - it looks like he has his "years" off by a bit, since the LWP didn't start until 1969. That is the correct bracket, though.

So a little more searching through e-bay brought this one up. http://cgi.ebay.com/ebaymotors/CHROM...Q5fAccessories I think I'll buy it, sandblast the chrome off and paint it black.

Thanks again for everone's help.

AS


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post #12 of 12 (permalink) Old May 18th, 11, 05:46 AM
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Re: 12si Alternator Bracket Question

Al, I'm meeting my friend to grab one of those brackets today if you didn't buy the chrome one already. Just pm me your address if you decide you want it.

SS

'69 Camaro
Dart 400-AFR 195-224/224 HR-Powerjection III TB with F.A.S.T. Sportsman XFI
TKO 600-Moser 3.42-Detroit Truetrac
500hp/538lbft

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