3310 carb - Team Camaro Tech
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post #1 of 6 (permalink) Old Dec 24th, 05, 03:48 PM Thread Starter
 
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3310 carb

i have a 750 vacuum secondary carb on my small block and recently blew the power valve. i was thinking about blocking it off for racing. shoud i or not.
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post #2 of 6 (permalink) Old Dec 24th, 05, 04:06 PM
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Re: 3310 carb

youll have to increase the main jets 4 sizes bigger i think .
with out looking in my manual.
I would get a DP carb for racing.
otherwise leave it alone replace the power valve its there for a good reason.


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post #3 of 6 (permalink) Old Dec 24th, 05, 04:19 PM
 
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Re: 3310 carb

CHEVYRACER........I WOULDNT USE A BLOCKED POWER VALVE UNLESS YOUR VACUUM IS THAT LOW...USE A GUAGE AND CHECK AND PUT THE APPROPRIATE VALVE IN...YOU OBVIOUSLY BLEW THE VALVE FROM A BACKFIRE WHICH IS NOT THE REASON FOR A BLOCKED VALVE...SOMETIMES YOU HAVE TO JET 6-8 HIGHER DEPENDING ON ENGINE...IT MUST BE AN OLDER CARB CUZ THE NEW HOLLEYS HAVE A BLOW PROTECTION.BLOCKED VALVES ARE VFOR ALL OUT RACING APPLICATIONS www.hardcoreparts.ca
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post #4 of 6 (permalink) Old Dec 24th, 05, 04:33 PM
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Re: 3310 carb

Here is a article on tuning. He talks about plugging the power valve. Why not buy the blow-out kit from Holley?

http://www.bob2000.com/carb.htm

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post #5 of 6 (permalink) Old Dec 24th, 05, 05:24 PM
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Re: 3310 carb

Blow out kits come in two forms,,, the small check valve that you drill and insert and the one with the ball in the screw type... Either one will end the "blown power valve " issue.

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post #6 of 6 (permalink) Old Dec 24th, 05, 07:55 PM
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Re: 3310 carb

I agree keep the power valve, once you select the correct one (based on vacuum) there really is not reason not to run one.

Depending on your combo a DP may be a much better way to go. Without the specs (weight, cam, tranny, etc...) it's hard to say for sure.

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