Stock 460 fuel pump, how high of a CFM carb can it handle?

« **on:** March 31, 2009, 11:00:39 AM »

I had a 750 vac secondary which my pump handled no prob, I'm putting an 850 dp (mech secondaries).. Do you think I'll have any issues using my stock fuel pump? Thanks!

« **Reply #1 on:** March 31, 2009, 12:06:08 PM »

Should be ok. I have the stock mechanical fuel pump on my BBF with the same carb you have and have never had a starvation problem.

« **Reply #2 on:** March 31, 2009, 02:07:05 PM »

I have a similar set up and here is what I know. I have an 800 dbbl pump mechanical secondaries that was just build by C&J engeering. They told me that carb needs a minimum of 6 lbs of fuel pressure. So I put a gauge on and found out that my old pump is not cabable of making anymore than 2 lbs......

Needless to say, I've ordered a new Holley pump, I guess my 32 year old pump has gone bad.....

« **Reply #3 on:** April 01, 2009, 09:18:40 AM »

Quote from: Nick on March 31, 2009, 02:07:05 PM

I have a similar set up and here is what I know. I have an 800 dbbl pump mechanical secondaries that was just build by C&J engeering. They told me that carb needs a minimum of 6 lbs of fuel pressure. So I put a gauge on and found out that my old pump is not cabable of making anymore than 2 lbs......

Needless to say, I've ordered a new Holley pump, I guess my 32 year old pump has gone bad.....

I had the same problem. I put a 850dp on my 460 and could only get 3psi out of the stock pump. I upgraded to a clay smith mechanical.

I would say put your carb on and get a regulator and gauge setup so you can see what it's doing.

« **Reply #4 on:** April 02, 2009, 09:10:59 AM »

Holleys like 6 to 7+ psi and plenty of volume , not saying it wont run that way , but you are likley leaving some performance behind Tom

« **Reply #5 on:** April 02, 2009, 12:00:26 PM »

So what do you think? Holley Red which is pre-set to 7psi, or Blue w/ a regulator set to 7psi to ensure it has enough volume?

« **Reply #6 on:** April 02, 2009, 08:45:35 PM »

Recently checked 3 holley reds at less than 6 psi , go Black or blue with a reg (just my 02)

« **Reply #7 on:** April 03, 2009, 08:59:01 PM »

Im running a holley red with a 800 right now and it working fine. Its at about 6.5psi. Hopefully i dont jinx myself by saying that

dm2bfree

Stock 460 fuel pump, how high of a CFM carb can it handle?

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Re: Stock 460 fuel pump, how high of a CFM carb can it handle?

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Re: Stock 460 fuel pump, how high of a CFM carb can it handle?

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Re: Stock 460 fuel pump, how high of a CFM carb can it handle?

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Re: Stock 460 fuel pump, how high of a CFM carb can it handle?