Quote:
Originally Posted by bfrank1972
Have you guys done any testing/optimization with the Crawford power blocks? I.E. in combo with your other headers etc. Especially for the pump gas crowd these could be a nice incremental addition to the other NA mods.
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We have tuned quite a few of them, so there is good and bad on these. Based on stock intake manifolds.
The good, they help the midrange quite a bit, by increasing the torque through 6K RPM.
The bad, they hurt the top end since the runners have become too long, in turn hurting power above 6500 RPM's.
For daily driving, might be nice, but for all out power and top end they do hurt it a bit.