Pulley and cam stock 6.1 with vortech - Page 2 - Cherokee SRT8 Forum
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post #11 of 25 (permalink) Old 04-14-2012, 11:13 PM
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Not enufff
All depends , how much boost you running and Dyno you used . I went from 496 awhp on the 32t standard Vortech pulley @ 6.4 psi , to 537 awhp with the 30t pulley making 8.1 psi using an AWD Mustang Dyno . End up running 10.93@122 , if we go by Dyno numbers I'D say you should be right were I was

07 JEEP SRT8 _ SOLD
Tuned By Johan
12.13 @ 110 N/A Cam & Headers
6.90 @ 101 & 10.93 @ 122 Boosted @ 9lbs
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post #12 of 25 (permalink) Old 04-15-2012, 02:29 PM Thread Starter
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I wish I could do that.i already have marc building my car.
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post #13 of 25 (permalink) Old 04-15-2012, 03:44 PM
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I wish I could do that.i already have marc building my car.
Now that's funny, which one Mike?
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post #14 of 25 (permalink) Old 04-15-2012, 04:11 PM Thread Starter
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It was down there a couple of months ago black small tire 91 mustang gt got a chute,wing and suspension
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post #15 of 25 (permalink) Old 04-15-2012, 04:12 PM Thread Starter
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Right before Dino did his truck with twins
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post #16 of 25 (permalink) Old 04-15-2012, 04:36 PM
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Gotcha Mike, Dino is getting a forged 6.1 now in his Jeep.
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post #17 of 25 (permalink) Old 04-20-2012, 03:24 PM
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Point of reference on a bone stock 6.1 and vortech with corsa car back, I swapped to the 30T, and picked up enough knock that once retuned I ended up literally at square one,
I raced my brothers bone stock vortech and corsa and we were literally dead even time and time again. Timing had to go from 13 or so down to 10, erased all gains. Boost in cold temps was cracking 11psi at 6400rpms, 9.5lbs now that it's hot.

I strongly recommend a flow adder mod with any more boost on the vortech, like a cam or headers or both, keep the boost below 10 an you'll see a good gain.

Or do what I did...get some meth. 50/50 mix and I'm at 9.5psi an 14* of timing. Took 3/10s off my 0-60, so I'm guessing 50-75whp added net. If u go this route don't cheap out, I have a failsafe system, lots o warnings built in. I'm looking for a good solenoid to open the bypass if flow failsafe is triggered as well.

Summary: don't just swap the pulley, you'll just end up tuning back to square one.

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post #18 of 25 (permalink) Old 04-20-2012, 03:29 PM
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Odd , I swapped the 32 to 30 , only changed done as 2* of timing removed and I picked up 41 AWHP , jeep was scary fast as well . Also no Knock on my tunes .
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post #19 of 25 (permalink) Old 04-20-2012, 03:38 PM
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With a cam and headers tho, that's the diff, you had room to grow before reaching knock threshold, with stock cam and manifolds the boost is much higher, so are the cylinder temps.

Last edited by 09blksrt8; 04-20-2012 at 03:42 PM.
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post #20 of 25 (permalink) Old 04-20-2012, 03:41 PM
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Seeing it done on stock CAM as well , For an instance , Vinny was tired of running 12's-and an 11.9 tops ... He now runs the 30T on a stock JEEP with a borls only and went 11.5@115 .
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