05 Mastiff 117 after upgrades

Energy One


Staff member
Supporting Vendor
Supporting Member
You would need to put more compression in the engine with the 640 cams. You will make more power, and torque at a higher RPM, but lose low end torque. Everything will shift to the right on your dyno sheet. A large rear tire, always hurts horsepower numbers. A small rear tire will always show more power on the dyno. Did your tuner check air pressure in your rear tire, before dyno work. Also a hot tire will show less power on the dyno. Send me a copy of your dyno sheet.
What compression did you get his motor up to?

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