Forged 346 + YSI
A&A Vortech Kit YSI blower
A&A 8 rib pulley
A&A Fuel system
Forged 346 By Intune 9:1 compression.
Patriot Stage 2 heads
Cam specs 224/228 581/588 on a 114
1 3/4 Stainless Works headers
Well we were guessing on pulley size and went way to big. Only making 10#'s @ 6600rpm. Made 540 on a Mustang dyno not even getting into this blowers efficiency range. Smaller pulley on the way.
Thanks to Andy @A&A his kits are well made and easy to install. His fuel system was very easy to install. Also thanks to Intune Motorsports for biulding the motor and my friends for all thier help. Big thanks to JAXX on this forum for always helping with my projects. As soon as i get the smaller pulley i'll post the results.
Welcome aboard 
I assume you have an 8inch crank pulley but what pulley were you running for the 10lbs and what size is on the way?
Last edited by MotleyDrew; Mar 10, 2008 at 06:27 PM.
I know Andy was running a 2.85 at one time but I think he said it was slippin a bit on the 427 he used to have.
I know Andy was running a 2.85 at one time but I think he said it was slippin a bit on the 427 he used to have.
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You will love the numbers and the power when you are done getting the smaller pulley!
What size is on there now?
I have a 3.2" on my P1SC and am putting on a better bracket, A&A P1 Bracket, to pick up the belt slippage I am getting!
It would only do 10 PSI and it should be at 12 PSI - the new bracket will be here friday

We are shooting for 630 - 650 RWHP from the current break in number on the new forged motor of 607 RWHP!
What is your RWHP goal too?
Thanks,Matt
You will love the numbers and the power when you are done getting the smaller pulley!
What size is on there now?
I have a 3.2" on my P1SC and am putting on a better bracket, A&A P1 Bracket, to pick up the belt slippage I am getting!
It would only do 10 PSI and it should be at 12 PSI - the new bracket will be here friday

We are shooting for 630 - 650 RWHP from the current break in number on the new forged motor of 607 RWHP!
What is your RWHP goal too?
Thanks,Matt
Anytime on the help, I think you have more time in my car than on yours.....LOL I should be telling you thanks again!
600 will be no problem with the smaller pully!
JAXX
If you get up to 6500 rpm you'll turn the Ysi to over 66,000 rpm. Assuming 5% belt slip.
What's the max recommended rpm?
I heard about guys who turn the Ysi to 80,000. Apparently the thing is almost bulletproof.
They use a 3.45 step up.
"Large blower" performance in a smaller package that fits most existing Vortech bracketry
Fits engines up to 1200 horsepower
Maximum airflow: 1,600 CFM *
Maximum boost pressure: 30 PSI *
4.25:1 internal step-up ratio
Maximum impeller speed: 65,000 RPM
Adiabatic efficiency: 78% **
Available with straight or curved discharge in clockwise rotation only
Part numbers below do not include drive pulley
9.162" Wide, 10.490" Tall, 6.126" Deep (not including input shaft)
Is this the wrong blower?
If so, sorry my bad.
"Large blower" performance in a smaller package that fits most existing Vortech bracketry
Fits engines up to 1200 horsepower
Maximum airflow: 1,600 CFM *
Maximum boost pressure: 30 PSI *
4.25:1 internal step-up ratio
Maximum impeller speed: 65,000 RPM
Adiabatic efficiency: 78% **
Available with straight or curved discharge in clockwise rotation only
Part numbers below do not include drive pulley
9.162" Wide, 10.490" Tall, 6.126" Deep (not including input shaft)
Is this the wrong blower?
If so, sorry my bad.

Otherwise at 8.5" crank, and 3.0" blower, and 7000rpm max...Im spinning my V7 a tad too hard














IT WOULD BE GOOD AT THESE # BUT WOULD LOOK AT THE METHANOL..


