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So I’ve got one of these big dogs porting intakes here…

15517 Views 208 Replies 38 Participants Last post by  96pushrod
A kind gentlemen - who is not big dogs, or affiliated with them sent me a big dogs cobra intake that has been ported. I’ll be replacing the box r intake on the car temporarily to see the difference.

I won’t get into the pissing contest, really here as a third party to make a comparison. Here are some pics of it compared to a factory explorer intake. All measurements are in mm.

This will be a strict a to b comparison deal. I’ll look at fuel flow and dragy times to see which one works the best. Engine is a woody built 347 with a f1r blower. Any ideas on which will come out on top?

If anyone wants any other pics or measurements, please Let me know and I’ll oblige if I can.

Saw Tool Machine tool Milling Power tool

Gas Auto part Wood Engineering Metal

Automotive tire Wheel Rim Rolling Automotive wheel system

Bicycle part Crankset Bicycle handlebar Automotive tire Auto part

Automotive tire Motor vehicle Bumper Metalworking hand tool Tool

Hand Tire Automotive tire Bicycle part Wheel

Hood Automotive tire Bumper Automotive exterior Tire

Automotive tire Automotive lighting Vehicle Bumper Automotive exterior


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Definitely reverse taper there........but let's see. We DISCOURAGE porting any GT40/Cobra/Explorer lower beyond a 1250 size head port but we get a lot of requests for 1262 - we try to discourage that and suggest better alternatives. I'm thinking Tony cuts length out of the upper to make up for larger cubes when a more appropriate intake suggestion is more in order. Kudos for the test 96pushrod!
When was this practice implemented, must have been this years New Years resolution.
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