Supercharging a 235

I've seen all sorts of interesting multiple carb intakes for the old 235ci chevy straight sixes, but what about forced induction. Has anyone ever done it? any cool pictures?

 

Not supercharged but injection.

 

That's a cool setup. Any more info on it?

 

Go here- http://www.jalopyjournal.com/forum/showthread.php?t=18390
lot's of six stuff and I believe a few blown ones.

 

Thats some strange looking 235. Are you sure? What's the deal?

 

If its a 235 its sitting in there backwards with the bellhousing cut off.

 

Could it be one of those rare 235 Chevys that came with a Blue oval on them?

 

This as far as I know is the only Kurtis built with a Chevy 6 and a supercharger.

 

the mill in my 37 is a supercharged 235...B&M 152 pump, Delta Camshaft, and HEI. Runs like a raped ape!

 

Now that is a neat hot rod!

 

i think langdons sells a setup

 

Close to a 235. missed by 35 inches

 

wtf...270? with single or twin turbo? front mount mag? more info please.....

 

Wow those are cool

 

270, twin Corvair turbos (TRW) 302 head Moon cam (Potvin) The Black and white one has a Howard 12 port head, Horning front drive. Three 500cfm Holley two bbls.

 

I'm sorry but I have no clue about that injected piece. It sounded all right though.

 

That is VERY cool. But man someday your going to wish you put some paint on that engine......

 

Hey draggin37 how much boost are you running on that?

thanx Phil

 

trust me i already do! i was in too big of a hurry to drive the damn thing.

its runnin 5psi for now...

 

I don't blame you there. Looks like a blast!!

 

What kind of work did you have to do to the engine so that it could handle the supercharger?

 

http://victorylibrary.com/mopar/blower-engine5.htm

 

So, judging from the article you can retain a moderately stock setup and run forced induction?

 

Stock RPM or only 500 faster + mild boost (5 psi?) - you don't need to change anything, except perhaps take 5-10° out of the distributor's mechanical advance and add it back to the vacuum advance to retain the stock initial advance setting, but you can find the total just by retarding the whole thing.
1 range colder plugs for test, may not be needed.
Pulley size will depend on blower size and how much boost you want.
Split exhaust at least, or headers.
Stock cam is fine.
Run 160 or 180° thermostat.
Carb size: to run draw-through (ahead of the blower) you need engine size × VE (let's say 90%) × RPM (let's use 5,000) ÷ 3,456 = 306.
Now multiply by boost correction: (5 psi boost + 14.7 psi ATM) ÷ 14.7 = 1.34.
1.34 × 306 = 410 CFM. Slightly larger is OK, slightly smaller will drop power slightly.
Run high octane for test to check for knock, reduce gas octane gradually until you have a good compromise.
To give you some idea: if the stock engine in good condition produced 100 hp, it was still pulling (my guess) 1.5 psi (3" Hg) of vacuum minimum at WOT. You now have 5 psi of boost.
The difference may be worth 35-40 hp (then deduct the loss from driving the blower, and add something for the better exhaust).

 

There is a very nice supercharged Chevy in Denmark. Not sure what year,but maybe 33-34. Maybe someone has a picture of it. The color was red.

 

so are there kits for things like this or does everything have to be custom fabricated?

 

Ever hear of Inliners International? Lots of good info there on making those inline motors sing, Blown, Turbo, Injected, you name it. Someone there has done it...

 

kick a$$

 

thanks for all the awesome responses!

 

There are no kits TIKO, but the fabrication is pretty simple. The only critical part is the drive, and making sure the pulleys are aligned and parallel - but if you start with slotted holes on the manifold and provisions for shims in the brackets you save quite a bit of work.
An Eaton that doesn't sit on the engine needs some bottom support, but it's obvious.
I'm surprised someone with a generic 6 like the slant, Ford 250 etc. hasn't done a DIY and then sold a video, or template + booklet. An M62 is about $100 used (late GM) and will give 5 psi on a 235.