Holley 3255-1 Info Needed

[elmariachi]

I picked up a newly restored Holley 3255-1 with LeMans bowls and wanted to play around with it on my side oiler (with Sidewinder intake and MR heads) before moving on to the 2x4 setup this spring. For those of you familiar with it where are you finding the bowls need to be set, which jets are you running and and where are your mixture screws?

Thanks.

Jim

[elmariachi]

BBBBBBBBump.

[Larry Spillman]

I tried to find your carb in my Holly book it didnt show up. If your carb was professionally rebuilt. The floats should be set very close to factory. turn ignition key on and let fuel pump pressurize lines,if you have a mech pump start motor and let it run till warm shut off and with air cleaner removed shake car side to side if floats are too high you will see fuel drip out of carb into motor. If you want a real test of carb take car out run it up to 5k or 6k put in clutch remove foot from gas pedal let car coast to stop remove a few plugs and see if there light brown black or wet or too clean if too clean your running lean if really dark your too rich. also after you have driven car for a long distance put your finger inside cool exhaust outlet and see if soot is dry and grey black if so you are probably at a good setting.usually floats are set from top of carb and small screw on side of carb is low speed idel mixture 1 1/2 to 2 turns from full in should work at low speed. good luck Larry s

[Anthony]

The Lemans bowls take a special needle/seat, and the floats need to be set with the bowls off, turing them upside down, measuring the clearance, and bending the tab appropriately. I have the specs somewhere, and if I find them, I'll post them, including the jet sizes and metering block #'s.

[767Jockey]

Jim,
Carl's Ford Parts still sell the LeMans bowls, maybe they have the float setting specs on hand. The floats in the LeMans bowls do need to be set off of the car by bending an internal tab.

[767Jockey]

Of interest about your carb, Jim. No float bowl setting info, but interesting nonetheless.

http://saac.memberlodge.com/resource...209-holley.pdf

[elmariachi]

I bought this carb from Carl's to tinker with. Even though he said they set it up and baselined it, I want to be sure by comparing how it is setup to the original specs. You know, the anal stuff. Anthony, if you can get me the specs that would be great. If not no worries as I talked to Dan DaVinci (DaVinci Carbs) here in Houston today and they are going to dyno tune it for me Wednesday.

[Anthony]

Float levels were: primary 3/8" secondary 1/2"

jets were primary 73 secondary 85

you definitely don;t want the float levels any smaller than what's listed, as it may then dribble fuel out of the boosters.

Dan Case sent me an email years ago giving me advice on setting my carb up. Thanks.

[elmariachi]

And just to confirm, these float levels are with the bowls removed and inverted, and measured from the bottom of the inverted inside bowl surface up to the bottom of the inverted float?

[Anthony]

Originally Posted by elmariachi

And just to confirm, these float levels are with the bowls removed and inverted, and measured from the bottom of the inverted inside bowl surface up to the bottom of the inverted float?

Yes. You're measuring the clearance from the top of the float, to the underside of the roof of the float bowl, but in an upside down position to simulate the float closing off the needle/seat.

[elmariachi]

Scratch that, so I adjust the bowls using the needle screw and then put the cover screw back on, right?

[Anthony]

You have to unscrew the bracket holding the float to the back of the bowl, pull the float out, and slightly bend the tab that's pushing on the needle. Put it back together, and check a measurement. If it's not right, take it apart again, and rebend it, put it back together and measure, and repeat until measurement is right. Have Fun.