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Old 05-26-2019, 12:07 AM   #1
dono50
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Arrow Late flathead in 46 ford exhaust question

Installed an 8ba engine with a 48-52 ford truck oil pan in a 46 Ford coupe. What y-pipe and cross over pipe do I use, the truck or passenger car? (Single exhaust)

Last edited by dono50; 05-26-2019 at 12:11 AM. Reason: Clarification
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Old 05-26-2019, 05:50 AM   #2
big job
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Default Re: Late flathead in 46 ford exhaust question

Just use the 46 manifolds and Y pipe. Last one I did, was unbolt manifolds and just let
it lay down in the frame then rebolt manifolds to the 8BA. That way you won't have to
fool with pipes that every body hates.
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Old 05-26-2019, 06:10 AM   #3
dono50
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Default Re: Late flathead in 46 ford exhaust question

Thanks, do you have an 8ba in your car?
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Old 05-26-2019, 11:28 AM   #4
RalphM
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Default Re: Late flathead in 46 ford exhaust question

I put a dual exhaust on an 8BA in a 47. What a PITA, routing around the drivers side. Single, original exhaust, would be much easier.
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Old 05-26-2019, 12:38 PM   #5
19Fordy
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Default Re: Late flathead in 46 ford exhaust question

Many years ago when I installed an 8BA in my 40. I used the 40 exhaust manifolds and the 40 cross over pipe. I may have had to "tweek" the X over pipe a little. The height of the engine mounts may produce conflict. I was using 8RT water pumps.
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Old 05-27-2019, 06:42 AM   #6
dono50
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Default Re: Late flathead in 46 ford exhaust question

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Used the truck water pumps and oil pan on the 8ba and the clearance below the pan was my concern. I’ll purchase the 46 y pipe and crossover and expect some tweaking will be necessary. Thanks to all for the advice
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