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Exhaust crossover plugs are designed mainly for use in marine or off-road applications
Ends are precision formed
1967-1976 Buick Riviera
These carburetors feature venturi diameters of 1-7/16 for the primarys and 1-9/16 for the secondarys
improve the original design
Holley Accelerator Pump Discharge Nozzle Screw - Hollow Screw Type RS00100212 Exhaust crossover plugs are designedHolley Accelerator Pump Discharge Nozzle Screw 121 7 Hollow Screw Type 12 28 Thread For Nozzles Size 0. 040 in. and Up Discharge Nozzle Screw 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
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