Headman Header Brackets - Alternator Location

[Brim]

Did a search but most of the results were for second gen. Here is the breakdown, I have a 64 fleet side with a 283/th350. I bought some Headman
longtube headers back in April and I want to install them.

The problem is my 283 has the alternator mounting points on the exhaust manifold (drivers side) and the OEM curved adjustment bracket.
From what I can tell when I go to install the additional Headman brackets that replace the exhaust manifold alternator mounting point it looks like it will be about an inch over more. Originally I figured a longer belt might be in order but I am wondering if I go that route it looks like I will have no more adjustment on the top bracket.

Those Headman header brackets appear to move the alternator over an inch or so. Is this correct? I haven't tore anything down but was sort of mocking the bracket location up and noticed the difference.

This got me to thinking about an alternative, I used to have a 74 Nova with a 350 and thought maybe I should look for that style of bracket and move the mounting location of the alternator to the passenger side. Am I opening a can of worms if I go that route?

Am I over thinking this or once I tear into it will the Headman brackets line everything up in the OEM exhuast mounting point locations? I just don't want to cut my exhaust and then have the truck down while I search for a fix.

Thanks in advance,
Mark

[geezer#99]

Post a pic of your brackets.
Swapping to passenger side needs different brackets, pulleys and a long water pump.

[Brim]

Originally Posted by geezer#99

Post a pic of your brackets.
Swapping to passenger side needs different brackets, pulleys and a long water pump.

I will take some tonight and add them here.

[Brim]

Here are a few pictures...the large square slot on top actually faces down. I just don't have anything to hold it up. The bolts from the headers/exhaust manifold would go through the round holes and into the head. That large square is to clear the number 1 cylinder header tube. I just flipped it so that it would stand on it's own. The other bracket is for the lower alternator mounting bolt.

[geezer#99]

Yup, it moves a bit outboard.
The top curved bracket should work.
Do you got a pic of where it attaches to the block?

[Brim]

Originally Posted by geezer#99

Yup, it moves a bit outboard.
The top curved bracket should work.
Do you got a pic of where it attaches to the block?

Kind of hard to squeeze in there to get a decent pic with everything mounted. I can try later on today. And my curved bracket is almost to the end of the slot. If I add the header brackets it definitely will move it over and there will be no more adjustment left in the bracket.

[geezer#99]

Have you looked into different mounts.
Brackets are available to mount the alternator down where a ps box would sit.

https://alangrovecomponents.com/Catalog.htm

[Brim]

Originally Posted by geezer#99

Have you looked into different mounts.
Brackets are available to mount the alternator down where a ps box would sit.

https://alangrovecomponents.com/Catalog.htm

Appreciate the suggestion, unfortunately I already have power steering so I am assuming it would be in the way. Might have to stay with factory exhaust manifolds or cut and extend my adjustment bar on top. If not, I've been wanting to add a 350 one day so I might search for a donor over the winter and install it. My truck is pretty heavy anyway and that little old 283 runs strong but some more cubes would help it to scoot down the road a little easier.

[AcampoDave]

I've found that once you extend the top bracket past a certain point the alternator passes its fulcrum and belt slacks up again.

Edit: if you do put the ramshorns back on you could port match them first with a Dremmel. I did that, even made a little thread when I did
https://67-72chevytrucks.com/vboard/...d.php?t=838223

[Brim]

Originally Posted by AcampoDave

I've found that once you extend the top bracket past a certain point the alternator passes its fulcrum and belt slacks up again.

Edit: if you do put the ramshorns back on you could port match them first with a Dremmel. I did that, even made a little thread when I did
https://67-72chevytrucks.com/vboard/...d.php?t=838223

Roger that, thanks for the tip and link!

[val1gonzales]

Are you running the original heads for the 283 engine? Or are you using a newer set with the bolt holes on the front side for brackets. If so you can do as I did with a head mounted bracket for alternator. I wanted a "factory" look with original short water pump.

[Brim]

Originally Posted by val1gonzales

Are you running the original heads for the 283 engine? Or are you using a newer set with the bolt holes on the front side for brackets. If so you can do as I did with a head mounted bracket for alternator. I wanted a "factory" look with original short water pump.

They are a pair of 69” 307 cast iron heads if my memory serves me correctly.That bracket might work as long as it doesn’t interfere with any of the power steering components. Where did you get it?
Also do you have headers?

Thanks in advance,
Mark

[val1gonzales]

Yes, I'm runing a set of headers and the it doesn't interfere witht he PS set up. I went to this setup because I had the same issue you did finding a bracket. Also depends on what power steering brackets you are using. I found alternator bracket on Ebay.

[Brim]

Ok thanks, what did you search to find the bracket? Been looking and can’t find anything shaped like that.

[val1gonzales]

Found this one on Ebay. 69-72 SBC 350 trucks or for corvettes.
search: 1972 To 1982 Corvette Vette 350 SBC alternator bracket 3951337

https://www.ebay.com/itm/27727603503...Bk9SR6TFv4GNZg

[Brim]

Originally Posted by val1gonzales

Found this one on Ebay. 69-72 SBC 350 trucks or for corvettes.

https://www.ebay.com/itm/27727603503...sical_ms=73011

Appreciate the info, link didn’t work but I will search

[val1gonzales]

serch this one out by the same name.

[Brim]

Originally Posted by val1gonzales

serch this one out by the same name.

Got it. thanks!