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Originally Posted by 76bonanza
My cover only has three screws and I have removed them but the cover will not budge.
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COLE'S 87 was referring to a Holley Avenger which is a new model and gives access to 4 screws. Your Holley is most likely not an Avenger, but there is a 4 th. screw, just cannot get to it, been that way on Holleys for many years. You have to remove the 3 or 4 side mounted screws and remove the diaphram housing, be careful not to mix up the linkage, etc, then you will see the 4 th. screw.
Stock Holley spring is probably silver, very stiff so secondary most likely not working, go to the yellow spring for the quickest secondary opening response if that is what you are looking to do.
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86 GMC SWB, DK. BLUE, ZZ430,TH400, 4.11'S, HEADMAN CERAMIC HEADERS, WELD BILLETS, BFG 275 / 60 / 15, 325 / 50 / 15 DRAG RADIALS, FIBERGLASS COWL HOOD, B&M SHIFTER. MSD, MARCH PULLEYS / ALT. / PWR. STEER PUMP, BECOOL RAD., BILLET GRILL & GRANT WHEEL.
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05-18-2004, 10:21 AM
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