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Old 02-08-2015, 05:56 AM
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Dwight Dwight is offline
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Join Date: May 2001
Location: Florence, AL
Cobra Make, Engine: RCR GT 40 & 1966 Fairlane 390 5 speed
Posts: 4,511
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Smile air filter

three years ago I was working on a B&B with a stock-ist 351W. We took it to the industrial park and ran it thru the gears. It would not rev pass 4300 rpms in any gear.
We pulled over to the side of the road and looked under the hood. It had a 8" S&H filter . We removed the air cleaner/filter. Now it would pull to 6,000 with no problem.
The air filter was clean.

We bought a larger filter and problem solved.

Dwight
I put the 8" filter on my old 79 Ford truck with a 302. It could not rev to 4000 before the filter, so the filter can hurt it. LOOK good on motor.
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