The Lokar bracket and return spring kit is specifically designed to fit the Holley Sniper EFI throttle body. There's even an adjustment screw to perfectly align the cable housing with the throttle ...

For more than 50 years, the classic Holley 4150-style four-barrel ... with a heavier secondary spring. Conversely, sluggish performance, especially at wide-open throttle, may be due to a secondary ...