What is the s.c./crank drive ratio of a 95 bird?

Wow! I though I was overdriving my m90 as compared to the m90s on the thunderbirds. Maybe thats why I'm only getting 11 psi.....hmmmmm. What size is the crank pulley on a thunderbird? (and how does the jackshaft factor in)?? My crank is 6.5 and s.c. pulley is 2.75"


Thanks,
Tom

Here's some pics of my setup...
 
Nice work, diy fabrications like that are nice to see.
One thing... sc belt does not wrap the sc pulley very much... I could imagine that driving sc more than that could make belt slip quite easily.
 
The crank pulley diameter on all SC's is 6.842 inches. We also use a jackshaft pulley that can alter drive ratio, as well.
 
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Thanks guys...Hey I read GTPs spin their superchargers at a ratio of 1.842 (8 psi) yet they make 10 more horse then the super coup, what going on there?
 
they are of the inverted variety aaaaaa much better flowing design with central inlet they also use blower to assist a well tuned engine verses our engines that are detune to run a blower we run lower compression and milder cam .

but look at their torque we surpass their torque we need torque for our heavier cars.
 
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