Holley Secondary Metering Block - Chromate - Holley 4160 Carburetors 34-13 Valley Dust Cover Seat pressure: 122 lbs

Seat pressure: 122 lbs

6-Bolt Head

Additional fittings may be required

GM 1955-58

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Holley Secondary Metering Block - Chromate - Holley 4160 Carburetors 34-13 Valley Dust Cover Seat pressure: 122 lbsHolley Metering Block 34 13 Standard Finish (0 3310C S) Or Most Any Model 4160 w Center Hung Float Bowl Metering Block Holley has been the undisputed leader in fuel systems for over 100 years. Holley carburetors powered every NASCAR Cup team and nearly every NHRA Pro Stock champion for four decades. Now, Holley EFI products power these cars and are dominating the performance world. Holley products for GM's popular LS engine are dominating the LS scene