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Holley 750 on a stock 440 intake - what's needed?

Posted By: DaveKanofsky

Holley 750 on a stock 440 intake - what's needed? - 03/31/09 03:18 PM

I'm sure this has been done a million times -

I'm putting a Holley list 3310-3 (750 cfm vac. sec.) on my 440 with a stock iron intake manifold. It's in a '69 Charger.

I found that the linkage would need almost a 3/4" carb spacer to clear the intake in the choke area, which causes me hood clearance concerns with the stock unsilenced air cleaner.

Any ideas for modifications that will buy me some clearance? I'm not crazy about grinding the intake if I can avoid it.

Thanks for your input and ideas!

Posted By: JohnRR

Re: Holley 750 on a stock 440 intake - what's needed? - 03/31/09 03:50 PM

Quote:

I'm sure this has been done a million times -

I'm putting a Holley list 3310-3 (750 cfm vac. sec.) on my 440 with a stock iron intake manifold. It's in a '69 Charger.

I found that the linkage would need almost a 3/4" carb spacer to clear the intake in the choke area, which causes me hood clearance concerns with the stock unsilenced air cleaner.

Any ideas for modifications that will buy me some clearance? I'm not crazy about grinding the intake if I can avoid it.

Thanks for your input and ideas!





Drop base air cleaner base , Ford motorsport sells a 13" air cleaner that fit the holley prefectly and uses the same size airfilter as your factory unsilenced unit .

You pretty much have it figured out , the intake is the issue in the choke area , in 1970 the choke design was changed and it allows a holley to be bolted on without any mods to the intake .
Posted By: Anonymous

Re: Holley 750 on a stock 440 intake - what's needed? - 03/31/09 03:53 PM

I had a '71 Chrysler 300 engine that had a factory cast iron intake that used a Holley bolt pattern. No need for spacers and worked perfect. I don't have a casting # handy but it had the square bore dual ovals under the carb rather than the big and little Thermoquad holes.
Posted By: 1_WILD_RT

Re: Holley 750 on a stock 440 intake - what's needed? - 03/31/09 04:08 PM

First for the linkage to clear you need about a 3/8ths spacer, they use to be pretty easy to find but I haven't seen one in years...But 1/2" ones are avalible....Also if your running a stock intake you should have more room than you seem to think.. Try losely wadding up a few balls of tin foil & place them around your aircleaner & shut your hood, that will give you an accurate idea of how much room you really have...

BTW you'll need a holley/mopar throttle adapter...
Posted By: Mr.Yuck

Re: Holley 750 on a stock 440 intake - what's needed? - 03/31/09 04:17 PM

I'd go w/ a 1/2" 4 hole spacer. It will make every thing clear and give you a few more HP Plus it will keep the carb off the HOT intake. You can also mount your fuel line backwards so it won't dump right into the distrib.
Posted By: Crizila

Re: Holley 750 on a stock 440 intake - what's needed? - 03/31/09 04:33 PM

Dave, I have a 1/2" 2 hole ( oval holes) spacer you could try if you want. If it will work, it's yours.
Posted By: Kudakidd

Re: Holley 750 on a stock 440 intake - what's needed? - 03/31/09 05:00 PM

Quote:

I'd go w/ a 1/2" 4 hole spacer. It will make every thing clear and give you a few more HP Plus it will keep the carb off the HOT intake


w/ Swingin. Also use that drop base air cleaner unit . Moroso and others make them,
Posted By: JohnRR

Re: Holley 750 on a stock 440 intake - what's needed? - 03/31/09 05:59 PM

Quote:

Quote:

I'd go w/ a 1/2" 4 hole spacer. It will make every thing clear and give you a few more HP Plus it will keep the carb off the HOT intake


w/ Swingin. Also use that drop base air cleaner unit . Moroso and others make them,



Yes Moroso and other make a drop base but the FORD MOTORSPORT unit is the ONLY one uses the same filter that fits the stock unsilenced air cleaner . Moroso and others use a 14" filter element
Posted By: DaveKanofsky

Re: Holley 750 on a stock 440 intake - what's needed? - 03/31/09 06:16 PM

Thanks all, I sincerely appreciate your inputs.

I started out trying the Mr. Gasket #97 heat dissipators that add up to 1/4", but they just aren't tall enough to clear the '69 intake.

John, you have a PM.
Posted By: Don_440

Re: Holley 750 on a stock 440 intake - what's needed? - 03/31/09 06:21 PM

I think you are going to need holleys linkage adapter too,keeps kick down linkage at right angle so it work properly,drop base air cleaner may interfer,might want to watch for that also
Posted By: DaveKanofsky

Re: Holley 750 on a stock 440 intake - what's needed? - 03/31/09 06:46 PM

I do have the linkage adapter, I will certainly look for intereference if I change the air cleaner base.

Thanks for the advice.
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