--I have an Ram Air type hood--
I have an performer rpm in my 67 Firebird, with an thin open spacer, 4150 Holley, drop air cleaner, I dont remember the spacer thickness, it is under 0.5 inches. I think maybe 0.45
Whitout an spacer it should fit easily. Just watch air cleaner clearance to hood.
I have had on a 1.0 inch spacer, but then I had to have the air cleaner lid very close to the carb and little/zero hood clearance. It works, but I felt it would be an restriction with the lid too close to the choke housing, whitout choke housing it would be better.
And I have an "filter" lid, so i can tighten/adjust it somewhat closer to the carb than an hard lid, I have actually cut the length of an bolt so when it bottoms in the carb the lid is perfectly adjusted heightwise against carb and hood. But I think an Moroso type lid would fit.
I have an Ram Air type hood. I dont remember the dropped base height, 1 inch or more.
Last edited by Twoblackmarks...; 05-16-2015 at 06:43 AM.
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