First off let me state that my cvr mini starter and optima red top have absolutely no problem spinning this engine . Cold,hot,it doesnt matter it spins extremely fast when you turn the key. That being said I have a 600 holley 4160 vac sec. (came on the 350/330 deluxe gmpp) It starts wonderfully when it is cold (sits overnight) But once it warms up, you have to pump the gas 4 or 5 times every time you start it. If it sits 15 minutes or 2 hours you have to pump the gas to get it to start. Is this normal?
I could see hitting the gas once but it just wont start unless you pump it several times. I have the electric pump in the tank with the press. reg adjusted to 6 psi. (it reads a little higher when it is cold but settles @6 once warm) That is the only problem I have with it. No bogs,stumbles or hesitations it runs very well otherwise. Thanks in advance for any input

 

are your fuel lines running anywhere near the exhaust anywhere from the engine back???

and are they running anywhere near the engine block ....such as touching it ....where they would get a vaporization problem at all ??

 

The typical carb starting procedures are:

Cold: Give it half a pump, let off completely, start. Sometimes it's a full pump when really cold.

Hot: As you start to turn it over, give it a little bit of gas and hold - don't pump it.

I suspect you're flooding it when warm and it starts in spite of that, finally.

 

fuel lines are 4-5 inches away from exhaust at closest. So i dont know if that could be the problem or not???
As for starting procedure I will try that this afternoon. This is my first holley. I had a edelbrock 600 and 750 on this car before now and it always started up real easy. Is there any chance thru misadjustment of the carb (A/F, or jetting) it would cause this? Maybe not far enough out to stumble or hesitate but enough to lean it out slightly to where it would need a little more fuel to start? Anyways, I will try the different starting today and let you know