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Considering an Intake change
#1
Currently I am running a Holley street dominator manifold. It is single plane. I am considering swapping out to the Edelbrock Air Gap dual plane. Engine is 351C with the specs listed in my signature below. It runs good and strong. Looking for thoughts on this before I pull the trigger on the new manifold. Also if someone has an Air Gap they are looking to part with I might be interested.

'73 Grandé H Code. Headman long tube headers, T-5 Transmission, 3.70 Traclok, Lowered 1" all around, Aussie 2v heads w/ 2.19 intake, 1.71 exhaust, screw in studs, full roller cam 608/612 lift 280/281 duration LSA 112, Quick Fuel 750 CFM double pumper, AirGap intake.

'73 F code convertible. Bright red. Needs total restore. (IE HOT MESS)

- Jason
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#2
From what Ive seen with dyno figures its an extra 15-20 hp over stock intake depending on the aplication. I run it with my 351c and Holley Sniper EFI , but it doesnt leave much space for the aircleaner. Ram air doesnt work with the airgap.

For knowing your limit you have to pass it thumb
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#3
With your cam and such, the RPM airgap should work very well.

FWIW, the Street Dominator series were designed with small ports to increase low end torque. I kinda think you are past the capabilities of that intake.


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#4
(07-17-2018, 11:52 AM)Hemikiller Wrote: With your cam and such, the RPM airgap should work very well.

FWIW, the Street Dominator series were designed with small ports to increase low end torque. I kinda think you are past the capabilities of that intake.

Thanks. I was figuring that as it kind of falls flat after about 4800 - 5000 rpm. Not that I spin it that high a lot.

'73 Grandé H Code. Headman long tube headers, T-5 Transmission, 3.70 Traclok, Lowered 1" all around, Aussie 2v heads w/ 2.19 intake, 1.71 exhaust, screw in studs, full roller cam 608/612 lift 280/281 duration LSA 112, Quick Fuel 750 CFM double pumper, AirGap intake.

'73 F code convertible. Bright red. Needs total restore. (IE HOT MESS)

- Jason
  Reply
#5
I did a bit of research on the air gap and seems to be a good compromise between a single plane and normal dual plane
Mine being similar build to yours would be interesting to see how it goes and I don't just go by dyno figures but prefer how it will behave overall on the street
Just a note when fitting the Air Gap, I had to grind some material off the manifold where one of the old alignment dowels were also needed to grind some off to be able to get one of the thermostat housing bolts in, may not be an issue with yours but best to check all this before you bolt it on
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#6
(07-17-2018, 10:25 PM)OzCoupe72 Wrote: I did a bit of research on the air gap and seems to be a good compromise between a single plane and normal dual plane
Mine being similar build to yours would be interesting to see how it goes and I don't just go by dyno figures but prefer how it will behave overall on the street
Just a note when fitting the Air Gap, I had to grind some material off the manifold where one of the old alignment dowels were also needed to grind some off to be able to get one of the thermostat housing bolts in, may not be an issue with yours but best to check all this before you bolt it on

Thanks for the heads up. I ordered yesterday afternoon so when I get it installed I will post an update.

'73 Grandé H Code. Headman long tube headers, T-5 Transmission, 3.70 Traclok, Lowered 1" all around, Aussie 2v heads w/ 2.19 intake, 1.71 exhaust, screw in studs, full roller cam 608/612 lift 280/281 duration LSA 112, Quick Fuel 750 CFM double pumper, AirGap intake.

'73 F code convertible. Bright red. Needs total restore. (IE HOT MESS)

- Jason
  Reply
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