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Author Topic:   Annular vs Downleg boosters
V-8
Gearhead

Posts: 297
From: TURKEY/Istanbul
Registered: Dec 2003

posted 02-29-2004 06:09 PM     Click Here to See the Profile for V-8   Click Here to Email V-8     Edit/Delete Message   Reply w/Quote
Hi guys;
What are the differences between them?(Holley hp series carbs)

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Mpcoluv
Gearhead

Posts: 1278
From: Charlotte NC usa
Registered: Apr 2001

posted 02-29-2004 06:20 PM     Click Here to See the Profile for Mpcoluv   Click Here to Email Mpcoluv     Edit/Delete Message   Reply w/Quote
Annular boosters are larger and have holes around the inner circumference of the booster where downleg boosters just spray the fuel out in one spot aroung the inner circumference of the booster. The annular boosters spray the fuel into a finer mist, but hurt flow (in equally sized carb bodies)compared to downleg boosters.
I like Annular boosters on street cars with single plane intakes. They work great for wide rpm band applications.
Many Cleveland guys swear by the 950 annular HP carb.

[This message has been edited by Mpcoluv (edited 02-29-2004).]

[This message has been edited by Mpcoluv (edited 02-29-2004).]

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