Technical Blower pulleys size

Looking for what size of 8mm pulleys to run

6v92 blower trying to get around 5 to 8 pounds of boost

 

What application? Most street stuff runs between 10% under driver to 10% over driven relative to crank speed. So you may have to pick a starting point and go from there. Are you sure that's a 6V92 blower?

 

Jr.

You're hooked to the internet...use it...
One bit of good info I found in about 10 seconds, tooth count, overdrive...and..."approximate" pressure. All right there on one page.
In another few seconds, I'd bet there are more if you don't like Dyers info.
But, alas, it's a task that you should be doing..!

http://dyersblowers.com/pulley_boost_charts.html

Mike

 

At a guess I'd say your 15-20 under Driven given pulley size

 

The blower in the photo must not be yours, it’s a 4-71. Also, what engine are you building? I think that’s a 250 Chevy is that right?

 

My is a 292 Chevy bored out to a 301

My blower is a 6v92 blower

I just don't know what my blower puts out so I would like to be around 5 to 8 pounds of boost

 

Charts may ***ist with pulley sizing to determine over or under drive and boost? Think they're 1/2" pitch

 

Who set up the blower? I would think they could tell you what pulleys to use to get what you want.

 

I redid the blower so I don't want to get way to much or no enough

One guy told me 50 and 55

 

Your 6V92 has the same case ID and rotors as a 6V71 and displaces 338 c.i. per revolution. Your engine uses 301 c.i. in two revolutions.
Using Dyer's reference charts, you'll want to be 15% underdriven to stay around 8 pounds max boost on your 300 inch motor. Using a 50 on the bottom and a 55 top will only be 9% under. You'll need a 60 top to get closer to 15% under with a 50 tooth bottom, or another combo altogether.
Post some pics of your set up. Blown sixes are still rare.

 

I will when I get it all together I post pictures when I get it together

 

I thought bower guys were like quick change guys... at least 10-15 sets. Hell it’s only money but 9-10 pulleys and play around a lot.