4-71 blower setup id....who made this deal?

got a pic tonight of a 4-71 setup on a boring old sbc..... what is the case / who built said such beast / any info what so ever......let me know.

 

GMC 471 blower... you can get high speed bearing kits on ebay. the intake, dont know!

i am selling one in the cl***ifieds.
http://www.jalopyjournal.com/forum/showthread.php?t=440408

 

check that pic again....no mounting flange spacer was under the blower , between the intake and the housing. owner / builder bought the setup , but didn't remember who he got it from....it sorta looks like a old pete robinson/george montgomery style case , but a 6-71.

 

The blower case has been "pruned". Some old builders would remove the flange, thus making the top and the bottom of the case more-or-less symmetrical. Vern's was, when they were still doing blowers.

That one is a 4-71. Matches the one on my bench right now. Still trying to find a 4-71 SBC manifold (for less than what I have in the rest of the whole car).

 

Looks as if the flange was machined off and a plate adapter boltes to the bottom side of the blower and then sets on a quad manafold

 

I have a blower just like the one in the picture. The intake is a crager and is not a 4bbl, it has a rectangle hole then the spacer. Did cragar make this intake like that? Or was the outside mounting tabs machine off to make it more aesthetic?

 

here's a page from a 1961 cragar catalog...shown is a 3-71 on a small block. Looks like they left the flange on.

welcome to the hamb

 

Tom Beatty did his blowers that way, the blower case was bolted to the manifold from the inside and then the blower was ***embled. I know he cast his own Olds manifolds but I don't know about SBC's.

 

The intake is probably a Cragar....

 

Have not seen a Chevy.

 

i have what might be a related question, i have a dual quad intake for a sbc and a 471, what is the best way of going about finding the best location to mount my blower, front to back? i'm thinking i'll run V belts.

 

I looked for months for a nice intake for my 471 I finally found a true NOS one but it was not cheap at all

 

maybe if someone has this manifold you can tell me the distance from the distributor center to the rear blower mounting holes, that would be a starting point to turn my dual carb intake into a blower intake.

 

It would be much easier to adapt a 671 intake to fit a 471 with an adapter plate. BDS or Hampton or somebody already has them.

 

It is dead-center, side-to-side, and front-to-back. Use the center four manifold bolts as a reference, mill the top flat.

 

thanks, i have a single plane intake as well which might be a better way to go, and i have a nice chunk of 1/2" aluminum large enough to make the plate, would i need a pop off valve if i use V-belts?

 

The belts would likely slip in the event of a backfire. Just set your timing right, and don't worry about it.

 

Here is a picture of my unit.. U can see the spacer..

 

A pruned 471 on a small block does not equate to a boring old Chevy. That is a very traditional modification. Now it it was a little holley blower on a small block I would suggest that it was on a boring chevy.

 

471 to 4bbl intake adaptor plate.


Or you could use a plate on top of a 671 blower intake then set the 471 blower where you want (this plate moves a 671 blower towards the rear) but it should give you an idea.

 

After looking real close at my intake I can see where it has been ground and polished back.

 

What about adapting a tunnel ram intake and welding it up>?

 

This one is not a clone, it was mine.

 

Figured it had to be, especially with the fabbed carb adapter and spacer plate. Maybe you can do some back tracking to the car?

 

btttmf'rs....