holley accelerator pump cam
#954113
03/20/11 12:31 AM
03/20/11 12:31 AM
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Joined: Dec 2007
Posts: 1,639 Brandon, Ms
cornet684me
OP
top fuel
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OP
top fuel
Joined: Dec 2007
Posts: 1,639
Brandon, Ms
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i have a holley 3310 750 vac. sec. carb on a 440, i had noticed a bog when i accelerate, from a dead stop when i wld stomp on the gas i wld have a bog, the bog has gotten worse, i went to crank up my car today, the car wld not crank, upon further investigation, i saw that the pump cam was not advance the accelerator pump level, i can push down on the lever by hand and it squits the steam of gas to carb , however when you operate the carb thottle the cam does not push down the accelerator lever, is this a normal wear item and just needs to be replaced? the carb is used and i do not know the age of the carb, i think the carb has a little age, i look up a new cam kit from jegs is about 23.00, do i just buy the kit and replace the cam with a new one?
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Re: holley accelerator pump cam
[Re: cornet684me]
#954124
03/20/11 04:47 PM
03/20/11 04:47 PM
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Joined: Jan 2003
Posts: 5,484 SoCal
Brian Hafliger
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master
Joined: Jan 2003
Posts: 5,484
SoCal
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I run the blue cams on 1 and readjust the pump arm. Then you can try larger or smaller squirters from there. Also, take a vacuum reading at idle in gear and use a 2" smaller PV than the lowest reading you have. If you have alot of vaccum, use a 10.5 PV and then you may need a larger squirter (35). Brian
Brian Hafliger
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Re: holley accelerator pump cam
[Re: Brian Hafliger]
#954125
03/21/11 12:17 AM
03/21/11 12:17 AM
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Joined: Dec 2007
Posts: 1,639 Brandon, Ms
cornet684me
OP
top fuel
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OP
top fuel
Joined: Dec 2007
Posts: 1,639
Brandon, Ms
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i found a old holley and took the pump cam off it, i think it is the red one, it fixed the off idle bog, however, when i stomp on the gas on take off, it still bogs a little, i guess i will have to play with the squirters and the pv. thanks for the input
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Re: holley accelerator pump cam
[Re: cornet684me]
#954126
03/21/11 12:43 PM
03/21/11 12:43 PM
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Joined: Jan 2003
Posts: 5,186 Wherever I am.
Junky
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master
Joined: Jan 2003
Posts: 5,186
Wherever I am.
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Quote:
i found a old holley and took the pump cam off it, i think it is the red one, it fixed the off idle bog, however, when i stomp on the gas on take off, it still bogs a little, i guess i will have to play with the squirters and the pv.
thanks for the input
Same here. The 35 discharge nozzle fixed it.
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