69 Ranchero - Ford Muscle Forums : Ford Muscle Cars Tech Forum
 
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post #1 of 5 (permalink) Old 09-25-2013, 03:35 PM Thread Starter
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69 Ranchero

I have a 69 ranch with a 351W edlebrock performer intake and a Holley 80457S 600cfm carb.
It has headers and I converted over to the electronic ignition chip. I put the lightest secondary spring that holley had in, but it still takes a while for the secondaries to engage. Would I be better off with the stock 2bbl intake and a
2bbl carb?

Any thoughts on how I can get more low end start power.

Last edited by RedRanchero; 09-26-2013 at 07:37 AM.
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post #2 of 5 (permalink) Old 09-25-2013, 10:24 PM
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Re: 69 Ranchero

No you wouldn't.
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post #3 of 5 (permalink) Old 09-26-2013, 06:59 AM Thread Starter
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Re: 69 Ranchero

Do you think that there could be a problem with the 80457S holley? It does have a small dead spot in it sometimes. Are there any special considerations that I need? Power valve? Low end jets?
Is there any way to get the secondaries to open sooner?

Last edited by RedRanchero; 09-26-2013 at 07:36 AM.
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post #4 of 5 (permalink) Old 09-26-2013, 07:16 AM
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Re: 69 Ranchero

Lighter spring in the secondaries, but you may never need them if you motor don't demand the extra air flow.

ID your current Power valve.

ID your jets

Ensure there's no Lag time between throttle movement and accelerator pump squirt.

Ensure your timing is adequate.
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post #5 of 5 (permalink) Old 09-26-2013, 11:31 AM Thread Starter
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Re: 69 Ranchero

I'm sure everything is stock, how do the power valves work? I saw that they sell a few different ones. The timing is right on per specs. One guy suggested that my harmonic balancer might need replacing.
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