Paxton 3.48 Dyno 718whp

Took my car to the dyno last night, Only mods are Paxton Kit with 3.48 pulley, VMP BAP and Cat back...Car has Stock headers and cats! MS109 fuel

Still seeing some belt slip, I believe im at the limitations of the stock tensioner here...
[ame]

14 psi?

nice!!!!! I really need to order my Paxton kit!

Are you 6 rib still? If so, you are not at the limits.

Still 6 rib

Strong numbers for such a simple set up. Love it!

I made 771whp on the stock tensioner at 14psi

Slamdcoop0428 said:

I made 771whp on the stock tensioner at 14psi

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If I had headers and no cats I think id see similar results!

How much psi are you guys at with the 3.48 pulley?

very nice, we do have the ars tensioners now, that and playing with some belt / idler sizes will help, we can usually get to a 3.33 with no slip

Good numbers, exhaust will surely open it up some. I'm wondering what my car would have done on 14psi at this point.

Jay159866 said:

How much psi are you guys at with the 3.48 pulley?

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I tagged 15psi right near my 7500 redline.

higdominator said:

I tagged 15psi right near my 7500 redline.

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For the 3.48, what's the length on the belt? 4th hole from the left? :cheers:

K06101HD...101", use 3rd hole from left.. it made 550whp in 4th hole, 720 in 3rd from left lol..

Jay159866 said:

For the 3.48, what's the length on the belt? 4th hole from the left? :cheers:

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I had a 102.5” on 2nd hole from left. Now on 3.33 with Vortech belt on far left hole.