'66 #3605 CARB SECONDARIES

[Rob A.]

I put a #3605 main body, primary metering block and secondary metering plate on a #3367 base and put it on my small block. When I start the engine, gas pours in from the secondaries, even with the secondary throttle plates closed. The engine won't stay running, of course. What can allow fuel to flood into the carb like that from the secondaries?

[Clem Z.]

Re: '66 #3605 CARB SECONDARIES

the secondary needle and seat must have dirt in them or the float is stuck

[Rob A.]

Re: '66 #3605 CARB SECONDARIES

Clem,

I removed the secondary bowl and checked the float needle and seat, and they seem to work fine. I tried starting the engine again, and fuel pours onto the secondary throttle plates. The secondary bowl was working fine when I took it off my #3367 yesterday. All I did was put it on the #3605. Is there anything else that could cause this, or is that the only way fuel can enter from the secondaries?

[Clem Z.]

Re: '66 #3605 CARB SECONDARIES

does the secondary float bowl have a external float adjustment and if it does check the needle/seat "O" ring and also check to make there is not a piece of debris in needle/seat assy. does the float bowl have a nitrophy (plastic) or a brass float because sometimes the brass float will not clear the secondary metering plate like it does on carbs with secondary metering bodies.

[Rob A.]

Re: '66 #3605 CARB SECONDARIES

Clem,

The accelerator pump cam is in the #1 position on my #3367 carb. The Holley specs call for the #2 position. The cam is red and has the correct part#. I'm happy with the acceleration I'm getting. Should I move it to the #2, or just leave it?

[Clem Z.]

Re: '66 #3605 CARB SECONDARIES

the difference between the #1 and #2 position is the number of CCs of fuel per 10 squirts. the red cam is # 240 and the CC volume in #1 position is 18.5 ccs and the volume in #2 position is 20 CCs per 10 squirts so 1 squirt would not make much difference. give it a try and see what happens

[Rob A.]

Re: '66 #3605 CARB SECONDARIES

Clem,

When cam holes 1 and 2 line up with holes 1 and 2 in the lever, is that position two?

[Clem Z.]

Re: '66 #3605 CARB SECONDARIES

there are 2 holes in the cam and 2 holes in the arm and when you put the screw in #1 hole in both you are in position #1 and when you put the screw in #2 hole in both you are in position #2.