Technical $40 supercharger

Just grabbed this.
Junk? Who knows.

 

Nice little 3/71,,,,,,it’s dirty ,,,,but will probably clean up alright .

Tommy

 

3 or 4?
I’ve only messed with 6:71s

 

That’s a 3/71 .

Tommy

 

Thanks. Just looked it up.
The guy I got it from said he has a sbc intake for it. Just has to dig it up.
Don’t know if Ive seen a 3:71 on a sbc.

 

3:71 cool little baby blower! Lucky bugger!

 

If nothing else it makes a nice office decoration! My 6-71 is sitting on a shelf in my office at work.

 

It can be done,,,,it will be way undersized though .
It is rated for an engine that’s 213 CI .,,,,,,
4/71 are for an engine of 284 CI,,,,and 6/71 for an engine of 426 CI .

Tommy

 

hmm, sounds like you need to supercharge a banger, maybe?

 

They made a 1-71 too.

 

Kinda what I thought.
It was advertised as a 4:71, but for $50 it didn’t matter. He didn’t have change for a 20, so he said $40 was cool

 

I’ve got a Chevy 2 4cyl, stude flat 6, and some 235s

 

That thing would just fit on an Austin A-series engine. 1275 cc of romping stomping 50s British technology... No that I think about it, a 1-71 would be sufficient. 1275 is about 78 cubic inches. Just a slight overdrive needed. Oh well...

 

Hey, Anthony;
That little(even a "big" 6) Stude is *sooo* deserving!
"Make it so!" .
To borrow a phrase... : "Patiently waiting... " . [Geez, I miss his posts. ;( ].

Marcus...

 

make a 1 of 1 supercharged built chevy ii 4 cylinder?

 

Seen one with an Eaton m-90 on it

 

Ow that’s just plain CUTE

 

I would drive that !!! I have a 4-71 collecting dust that I thought would befitting a Chevy 250 six but a little snotty 283 with a huffed would be fun. Good on you.

 

I would have done the same, pick it up and worry about it's use later.

 

Barney Navarro ran one in his Roadster with a de-stroked Flathead, 180 inches as I remember.

 

Correct, but that 3-71 DD the blower was originally fitted to was a two stroke, it inhaled that displacement every revolution of the crank. The flipside was that the blower provided basic scavenging and no more. I'd pick a point in the middle and say with a proper rebuild and rotor seals it ought to support 4-5 lbs on a 300ci sized motor.

 

I have a complete Cragar "V" belt drive and manifold for a 3-71 blower. I also have 2, 3-71 blowers. Someday if I feel ambitious, I will install the set-up on my 265" SBC engine in my roadster. I know the 3-71 was designed for 213 cubic inch engines, but, so what. The cool factor of seeing a 3-71 Cragar "V" belt set-up is what is important to me. I'm not trying to be a race car, I'm just adding period correct equipment to my roadster that was built in the late 1950's.

 

Any pictures of the drive set-up ? I'm curious about the length of the snout as well as the pulley set-up.

 

Hopefully he finds the intake for you.

 

Ya gets what Ya pay for

 

Yep.
I’m curious about a 283 I have

 

Well worst case, maybe have a polishing class or two. Put it on display at the school.
40 bucks? Even at 50 I’d have bought it without a current or future need for it.
Hopefully the intake manifold is in the same price range.

 

Hell, forty smackers isn't even gas money. Cool piece! Love to see it on a chopper.

 

"When I grow up I wanna be a thixth theventy one, justh like my bruther."