I have a 292 with a little bigger cam, blue thunder intake and ford-o in a 56 sunliner.  I had an edelbrock 500 cfm carb for a while, and found it was too big for regular around town driving.  I tried messing with jets, etc. and it was just too much carb - always very soft/lack of throttle response in the mid range no matter what I did.  Plus, my used oil analysis showed a LOT of unburnt fuel/oil dilution and accelerated ring/bearing wear, etc.

Last year I switched to a Holley 390, and the driveability improved significantly.  Also, latest UOA indicates that there is MUCH less fuel dilution and that wear is back to where it should be.  Yes, it lost a LITTLE at WOT, and the intake roar isnt quite as loud with the smaller carb, but the throttle response and better wear internals more than makes up for it, IMHO.

Hope this helps!

Ron Grove

Wauconda, IL

Hello All,I finally got a 57-up intake for my 56 292.I want to replace the Tea-Pot.I need a carb.I like the idea of getting an original 4150 and rebuilding it.I could also  go for one of the newer Holley 8007 390 cfm carbs.The engine is completely stock.I just want something less troublesome than what I have now.Quite a while ago someone said they got a rebuilt 8007 Holley somewhere at a real good price.55Birdman I think.Anyway looking for some opinions here.I already have the later distributor on the motor.Thanks Mark