FE Power Forums
FE Power Forums => FE Technical Forum => Topic started by: rcodecj on May 30, 2011, 12:10:12 PM
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My pulleys are approximately 1.09 ratio.
The March High Flow pulleys are .92
The March Performance pulleys are .81
I have ran underdrive pulleys on my 460 and small blocks before with no problems.
I have .96 ratio on my 460 with no cooling problems, and my alternator charges fine at idle with two massive electric fans.
I have essentially the same fans on my 390 with the same alternator so I don't think charging would be a problem.
They are kind of pricey for what I feel the performance gain will be.
On my 69 mustang, 390, the bottom radiator hose is close to the p/s belt, so a smaller crank pulley would help there.
It's not rubbing or anything, but it's a close fit on any FE mustang.
For those who are running them, your thoughts please.
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I run the performance March pulleys. No overheating problems, and now the belts stay on at 7500 RPM ;D
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Hawkrod has no trouble rattling off the correct part numbers to make sense of the massive confusion surrounding the front dress of an FE but, even if I were to be prepared to go through the task of re-finishing a set of pulleys after finding them, I'd be right back to stock. So I went with March.
Kim March has been very helpful to me on several occasions before they moved the company from Westland MI to Florida. And since I used an ATI damper on the engine in question, I needed pulleys to match. (ATI FE dampers are a bbc piece with an FE hub substituted. So I had to match a bbc crank pulley with the other stuff, including the crank trigger.)
I'm at the point of ALWAYS using March. I've had no trouble of any kind!
KS