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1966 Fairlane With 502

1168 Views 32 Replies 11 Participants Last post by  19Fo79rdF250$
Installed a ATK 502 525 HP engine in the Fairlane. Had some over heating problems at 1st......fixed that with 2 elec fans and water pump fan.......... Now seems not to be producing 525 HP. Should be a screamer but not living up to ATKs HP claim ?


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Carb should be at least a 850 Holley for street,950 for higher HP/TQ, that's probably costing you 25HP right there. More user friendly on the street with smaller carbs, but HP/TQ suffers especially with heads/cam/intake and cubic inches. Like trying to suck air thru a small straw.
Lean engine will also generate lots of heat.
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