I'm not sure if this will get moved to "For Sale", but I have a MMS 6 rib crank pulley $100 shipped and RR 4.0" $60 shipped and ATI 4" $35 shipped and ATI 3.85 $35 shipped.
MMS pending sale
4.00 RR
4.00 ati
3.85 ati

 

any of them 8 rib?, like the 4"?

 

What condition are they in? Locating studs in place, etc?

 

No 8 rib's. condition 4.00 (ati) like new 3.85 (ati) like new 4.00 (RR) good and mms
in good condition just minor scratches no physical damage.RR pulley has ascuff where it rubbed the alt. but fine.

 

What would the MMS Crank and 4 inch S/C pulley compare to (ratio wise) on the stock Crank pulley!

I am currently running a 3.4 inch S/C pulley.

 

I was running the stock crank and 3.40 and was making 9psi - I switched to the MMS and a 4.25 to make 9psi but was hoping to make 12psi, so I went to the 4 inch and made 11psi.

I think the math is crank size / pulley size X step up X RPM's = blower rpm's

example: MMS 7.875 (estimated size) / 4.00 X 4.10 X 6500 rpm's = 52,467 blower rpm's

So if you know your factory size -- you should come close.

 

I want the MMS pulley and the 4 inch AT1. How do you want payment? Paypal?

 

The MMS pulley is pending sale -- I would have liked to sell them as a pair but he contacted me first. If it does work out I'll let you know.

 

Let me know if it doesn't go through!

 

Okay, I'll let you know what happens.

 

how much would the ati crank and 3.85 make?(psi)

 

Psi is relevant to your modifications -- all I can tell you is from my experience -- car was mostly stock, headers, and minor bolt-ons, MMS crank, 4.25 made 9psi. 4.0 made 11psi, so I assume that 3.85 would make 13psi (?) -- I never ran a 3.85.