Whats the difference between a holley Dominator and an HP?

Whats the difference between a holley Dominator and an HP? - 05/16/15 10:40 PM

New to Holleys. There are so many.. after some research most interested in the dominators, the HP's, and Ultra XP's. Whats the main differences between them?

Posted By: D_C

Re: Whats the difference between a holley Dominator and an HP? - 05/17/15 05:42 PM

The Ultra series is an Aluminum Body carburetor, around 4 1/2 pounds lighter than a comparable standard construction type Holley.

Here is a review article about the Ultra:

http://www.dragzine.com/news/new-products/tech-review-holleys-new-ultra-series-carburetors/

Here is "The Ultimate Guide to Holley Carburetors" by Hotrod Magazine:

http://www.hotrod.com/how-to/engine/ccrp-0807-holley-carburetors-basics-guide/

The Dominator series was Originally designed for NASCAR but has been used everywhere.

Posted By: Adam71Charger

Re: Whats the difference between a holley Dominator and an HP? - 05/17/15 06:34 PM

thanks for the links. Lots of homework to do

Posted By: D_C

Re: Whats the difference between a holley Dominator and an HP? - 05/18/15 11:01 PM

Concerning the HP and Ultra, from that Hotrod article:

Quote:

HP series with a new contoured venturi main body equipped with screw-in air-bleeds, stainless steel throttle blades with buttonhead screws, strengthened metering blocks, and Dominator-style fuel bowls. Following the HP, Holley produced the HP Ultra version, which upgraded to black-anodized billet metering blocks with screw-in idle feed and emulsion jets and a billet baseplate. The HP Ultra is an expensive carburetor, so Holley introduced a much more affordable Street HP 750 in the bright finish in either vacuum-secondary (PN 0-82750) or double-pumper (PN 0-82751) configurations. These carbs offer screw-in air-bleeds and a street/strip calibration that is leaner than the HP and Ultra.

Read more: http://www.hotrod.com/how-to/engine/ccrp-0807-holley-carburetors-basics-guide/#ixzz3aWg5Z3mh
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