Seller notes

Spacer will increase air speed from the base of the carburetor to the top of the intake valve and will end up pulling more fuel from the carburetor, Super Sucker will require a change in the size jet currently being used. E.T. is reduced as much as 1/10 of a second and lap times reduced as much as 2/10 of a second, Designed to improve throttle response, drivability, top end horsepower and torque, Specifically designed for the 604 crate engine and gives more low end and mid range torque without r...

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