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By paul2748 - 7 Years Ago
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Were the intake gaskets with the small hole for the heat crossover made for a specific application or are they an after market item.
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By NoShortcuts - 7 Years Ago
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Paul. I can't quote a source for the info. but I've always believed that the intake manifold gaskets with the small crossover hole were used on some Ford production 292 truck applications.
I suspect that the original Ford application was larger vehicle 292 trucks. -Not pick-up trucks.
I THINK their use by Ford originated in the early '60s.
Someone with a set of Ford Truck Text Catalogs can probably identify their year of first application.
Removing the exhaust system heat riser and using a Ford production spacer instead, OR removing the flapper valve but keeping the shaft, coupled with using the intake gaskets with the small hole in the heat cross-over, should reduce the engine's intake manifold temperature AND the operating temperature of the carburetor on the intake manifold.
Mac's shows both a reproduction exhaust manifold heat riser replacement spacer and an exhaust manifold heat riser with a stainless steel shaft that has no flapper installed if you look up '57 Ford exhaust system. Interestingly, I don't see a Mac's listing for the intake manifold gaskets with the small hole for the exhaust crossover.
Ebay has a listing for the intake manifold gaskets we're talking about from BEST Gasket. Click the link below.
http://www.ebay.com/itm/Ford-Edsel-Mercury-272-292-312-Y-Block-Intake-Manifold-Gasket-Set-BEST-1955-64/190905115430?_trkparms=aid%3D222007%26algo%3DSIM.MBE%26ao%3D2%26asc%3D46086%26meid%3D68eb72f09f0548ea919c5b11bd21b3e0%26pid%3D100005%26rk%3D2%26rkt%3D2%26mehot%3Dlo%26sd%3D222622085425&_trksid=p2047675.c100005.m1851
Hope this helps. 
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By PF Arcand - 7 Years Ago
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I believe Charlie is correct, that the restricted cross over intake gaskets were available for Ford heavy Trucks. Another source for them & many other vintage engine & trans gaskets is, "Gasket City" in Hamilton Ontario. Phone; Al Lambert, toll free @ 1-888 335-4686 @ 39 Saveryn Rd. Hamilton Ontario Canada. (sorry I don't have the postal code) He takes Visa & Mastercard.. This is just info, I bought them from there, but have no connection with the company.
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