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Your cart is empty.Holley has been the undisputed leader in fuel systems for over 100 years. Holley carburetors powered every Monster Energy 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 as well. Holley's products also include performance fuel pumps, intake manifolds & engine dress–up products for street performance, race and marine applications. As a single solution, or partnered with products from other Holley companies we can give you the edge you need over the competition!
Hawaiian
Reviewed in the United States on June 5, 2023
It works
Charles d.
Reviewed in the United States on October 27, 2023
Holley
Johnny
Reviewed in Canada on July 19, 2020
Just what I needed and it made my holley run like new again. As its pre 94 so so back fire ball . So it blows this valve if it back fires . If you turn in your lean screws in your car keeps running you need a new one. Hit the helpful button and let me know its help thanks.
Matthew House
Reviewed in the United States on November 19, 2019
Seemed to be well made.
BT8850
Reviewed in the United States on May 10, 2018
I purchased this power valve as a replacement for the stock 6.5 unit in my Holley Street Avenger 670cfm. The cam in the engine produces 10.5-11 inches of vacuum so this power valve was more suitable for my application. It was easy to install, I did it with the carb still on the car and just removed the front bowl and metering block. This valve comes with a new gasket which is great. Once I had it installed I noticed better throttle response and 'get up and go' almost immediately. Very good product from Holley, I'm sure this particular valve wit fit many of their models.
Customer
Reviewed in the United States on October 23, 2016
Get the backfire power valve blowout valve too.
Tim Featherston
Reviewed in the United States on March 31, 2015
easy install to help tune your carb for your application.
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