Holley Jet and Power Valve Size

John P.

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Join Date: December 31, 2005

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#1

Holley Jet and Power Valve Size

May 30, 2017, 07:40 AM

Hello, Can anyone tell me the stock main jet, and power valve size for primary and secondary on a 1966 427/425 Holley. Also, does anyone have a size suggestion for street applications to deal with the new fuels? Thanks in advance for any and all help. John
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Joe C.

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Join Date: August 31, 1999

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#2

May 30, 2017, 08:21 AM

Re: Holley Jet and Power Valve Size

Originally posted by John Pelkofer (45001)

Hello, Can anyone tell me the stock main jet, and power valve size for primary and secondary on a 1966 427/425 Holley. Also, does anyone have a size suggestion for street applications to deal with the new fuels? Thanks in advance for any and all help. John

Pri: 122-70
Sec: 122-76
PV: 125-85
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