GT-40 Exhaust Gasket

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GT-40 Exhaust Gasket

Postby Strike2 » Fri Feb 18, 2022 2:54 pm

I've searched the bronco sites and cant seem to find which exhaust gasket folks are using with GT-40 heads and shorty headers from Bronco Hut. The gaskets that came with the headers only had 3k miles on them but like a fool I tossed them saying I'll just buy some more. I just got back from the main Napa hub and they could even find one to order, everything they brought out had the small ports 1.24W - 1.450 T I'm looking for 1.24W - 1.917 range. This shouldn't be this difficult especially since the heads are out of 1996 Explorer and was hoping to source them locally?

Anyone have a part number other than these which are the small port.

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Re: GT-40 Exhaust Gasket

Postby ZOSO » Tue Feb 22, 2022 8:03 pm

tallest port I could find was 1.75". did you measure the ports on the heads to be sure they are 1.9" tall?
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Re: GT-40 Exhaust Gasket

Postby Eck » Tue Feb 22, 2022 8:11 pm

If I am not mistaken-- Andy Janes is now selling the Sanderson shorty headers that Bronco Hut used to sell. Maybe he could give you a part number or has them for sale?
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Re: GT-40 Exhaust Gasket

Postby Strike2 » Thu Feb 24, 2022 2:08 pm

ZOSO wrote:tallest port I could find was 1.75". did you measure the ports on the heads to be sure they are 1.9" tall?


I spoke with Nascar Mike at this months breakfast and he said I was way overthinking it and said since the head ports and header ports where not the same size just match the heads ports so I ended up getting the Cometic C5898HTS header gaskets locally.

Janes Automotive thanks for the lead Eck I've never heard of them.
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Re: GT-40 Exhaust Gasket

Postby Mr. Lav » Fri Feb 25, 2022 9:50 am

Also if I remember correctly in the Sanderson's installation papers they called for 1/8" bead of permatex Ultra black high heat silicone around each port.
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