Thread: New Arntz owner
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Old 10-22-2013, 09:36 PM
Cobra13 Cobra13 is offline
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Join Date: Mar 2013
Location: Corona, Ca
Cobra Make, Engine: Arntz 427SC, 427w, 592hp, 561torque
Posts: 38
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So I have the dyno results from my head change. It's not a direct comparison because I wimped and backed off on the cam and compression a little. I need to be able to enjoy it on the street as well as track! HP came in at 592, but not until after changing up the carb. I started pulls with the same quick fuel 850 as I had before, but dyne readings were clear that more air flow was needed. I found a Holley HP Ultra 950 locally(I was on the dyno and time was ticking!), bought it and mounted for test...went from 550 to 592 out of the box! There's probably more there after some jetting but the curves looked fantastic so I let it be. Need to move on to next step!
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