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Old 06-07-2024, 09:51 PM   #8
JayChicago
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Join Date: Jan 2019
Location: Chicago
Posts: 1,028
Default Re: Exhaust cross-over pipe mystery insert

Quote:
Originally Posted by 38 coupe View Post
JWL was performing dyno tests of an 8BA and found one of these stuck closed in the crossover pipe after initial testing. Removing it made zero difference in power or coolant temperature for the engine being dyno tested. After learning of that result I no longer worry about restrictive factory exhausts on our flathead Fords.
And Ol' Ron: "Also, installing headers and duaul exhaust didn't improve powere any."

Who would have thunk it? Not me. Since I was a teenager I thought improving on a stock exhaust was a sure-fire way to better performance on any car. Still a lot to learn in my old age.
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