HELP !!!! '72 BBC Alternator Issue Mystery
 

OK, here is by dilemma (pulling my hair out) I am assembling my 402 to install in my '72 C-20 truck. I have the correct, GM original alternator brackets and I purchased the right alternator for my truck and when I put it all together the rear support rod that bolts to the exhaust manifold doesn't reach !

It's about 3/4" short - what am I doing wrong or missing ??? HELP !!!!!!

Re: HELP !!!! '72 BBC Alternator Issue Mystery
 

I’m pretty sure bolts to the head not the manifold.

I thought of that as well but there are no open holes above the exhaust manifold that the rod could reach. I have looked at pictures but none I’ve been able to find are clear enough to see where it bolts to !
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Re: HELP !!!! '72 BBC Alternator Issue Mystery
 

Maybe some one can post a clear picture of the whole assembly on the engine.

Re: HELP !!!! '72 BBC Alternator Issue Mystery
 

This brace bolts behind the alternator, bolt through brace then into alternator.
Ive seen it bolted to front of alternator.

Re: HELP !!!! '72 BBC Alternator Issue Mystery
 

Post 11 here has a picture.
http://67-72chevytrucks.com/vboard/s...d.php?t=760308

Think the head bolt hole is above and to the rear of the 2nd exhaust manifold bolt from the front.

Re: HELP !!!! '72 BBC Alternator Issue Mystery
 

Hi Randy, Thanks, I know it bolts to the back/behind part of the alternator. I have been able to confirm this looking at various pictures. It's the rod that bolts to the back of this bracket that is driving me crazy !

Re: HELP !!!! '72 BBC Alternator Issue Mystery
 

If that picture in the thread doesn't clear it up then i can move some stuff and lower my truck from the lift....

Have a mod move this thread to the message forum.

Re: HELP !!!! '72 BBC Alternator Issue Mystery
 

Randy, I have that picture saved but it doesn't help when it comes to where that rod connects to the engine - I really need to see where it bolts to on the engine.

Re: HELP !!!! '72 BBC Alternator Issue Mystery
 

Try this.

Re: HELP !!!! '72 BBC Alternator Issue Mystery
 

Thanks Uncle, can you send a link to the picture - it's exactly what I need but too blurry to see the detail. Thanks !!!

Re: HELP !!!! '72 BBC Alternator Issue Mystery
 

you are right it bolts right above the #3 cly. exhaust manifold port in a 3/8 hole

Re: HELP !!!! '72 BBC Alternator Issue Mystery
 

I googled 72 truck 402 through the board,then went to images. Not too far down in the images. Not too computer savvy. Maybe you can find it this way.

Re: HELP !!!! '72 BBC Alternator Issue Mystery
 

Thanks Anew - You are right !!, I'm running an earlier set of heads that doesn't have this hole/boss on the head - MYSTERY SOLVED !!. Luckily I was rummaging through one of my cans of bolts and found a small bracket that I can bolt on the exhaust manifold that should work just fine to connect the rod at the right location and height. Thanks to all who contributed - no more hair pulling.

Re: HELP !!!! '72 BBC Alternator Issue Mystery
 

Thanks, found it and Anew4961 was right - my heads are different. Thanks again for your help.

Re: HELP !!!! '72 BBC Alternator Issue Mystery
 

If your interested in selling that rod I lost mine. I think I finger tightened it and forgot to snug it up. Thanks, Tom

Re: HELP !!!! '72 BBC Alternator Issue Mystery
 

Hi Tom, no, now that I've solved the mystery I'm going to need it to put it together. I'm sure someone out here has a spare.