carb air entry pan for the Super 10

[Dwight Southerland]

Originally Posted by Danny Ashley

Terry:
According to one of my carb customers who asked an NHRA tech man about air cleaner bases, the base cannot be higher than the top of choke housing. He said they should be able to lay a straight edge across the base and it should touch the carb. This will keep racers from adding spacers under the base therefore creating a type of velocity stack.

Interesting. I see that for Holley carbs, but if the same rule were applied to 4GCs, AFBs and many other carbs, even the factory bases would not pass.

[FED 387]

I had some aluminum cast adapters made up for sale. They are only about 1/2-3/4 inch in thickness that will allow a 4GC carb which has a 4 7/32 in diameter opening to use a pan with a 5 1/8 inch diameter opening which is what most Holley/Quadra Jet carbs are. I have both a shallow dropped base air pan and the adapter which will fit many applications where hood clearance needs to be considered--- contact me for more pics/info---FED387

[terry1]

Danny, does the Speedway Motors carb base pass the "stright edge" test?
Terry K

[Danny Ashley]

Terry:
Yes it does. I just check it with a Chevy and a Pontiac Q-Jet and the straight edge is dead even with the top of the choke housing. Should be good to go.

[terry1]

Thanks Danny. Speedway Motors site say it "fits Holley carbs".
Terry K

[Danny Ashley]

Terry:
Yes it does but Holley and Quadrajets both use a 5 1/8 air cleaner. The only thing to watch when using one on a Q-Jet, sometimes it requires a slight modification because the accelerator pump lever may hit. Also when used on a Pontiac carb, a hole needs to be drilled for the front vent tube. Easy fix for both.

[terry1]

Thanks Danny for the great info,as always.
By the way, my carb is working as good now as the day I got it back from you.
Terry Knapper