Some non-Holley cork gaskets tend to shrink ... See All 22 Photos Many non-Holley carb rebuilding kits contain incorrectly designed needle-and-seats. The worst of these can be quickly identified ...

Holley came out with the first modular carburetor, the 4150, back in '57. Today, Holley still makes the 4150-heck it even makes hopped-up versions for everything from drag racing to rock crawling.

Playing with old cars and carburetors ... a new needle and seat, or a slightly more complete hardware kit that includes a new adjusting nut for the needle and seat along with a gasket.

While the '38 carburetors are labeled Chandler-groves, Holley made many with the ... a thorough cleaning and replacement of the gaskets, needle, and seat, and in the case of a 94, the power ...

Things like plugging in a flash programmer to adjust the fuel tables is replacing buying a used Holley Carb and rebuilding ... when the fuel got low. The needle and seat could fill the bowls ...