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The motor was assembled and dyno'd by
Bob Bailey at Hi-Torque. While most of what they build are Chevy
motors, Bob use to build and race Clevelands back in the 70's.
The heads flowed 311 @ .600. Not
bad for a set of factory iron heads. Won't see many small block street
cars with that kind of flow.
On the dyno the motor pulled 475 HP @
6,600 RPM, and 430 TQ @ 5,100 RPM. The motor was still building HP
when we stopped the pulls at 6,600 RPM. It was picking up about 6 HP
for each 100 RPM at the point we shut it down. The motor is built to
turn 8K RPM so it's anyone guess what the peak HP really is. I'm
running a very mild cam so it would probably run out around 7K RPM.
The dyno showed the motor being
seriously over-carbureted. To the point the plugs were so severely
fouled I couldn't restart the motor once I got it in the Falcon. I
have since replace the Holley 850 DP with a Barry Grant 750 Mighty Demon and
a 2" open spacer. I believe the motor now easily puts out 500+ HP. |