Running a 16 Valve Model C Roof Head

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NorthSouth
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Running a 16 Valve Model C Roof Head

Post by NorthSouth » Wed Jul 16, 2025 8:06 pm

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For those who might be familiar with Model T Ford Speedster Performance Equipment, what do you think about running a 16 Valve Model C Roof Head in a Speedster? Are there any mechanical or reliability issues that I might want to be aware of or maybe be watching out for when out motoring? ...Or, are they as reliable and easy to run as any other head.
Thank you in advance for any advice that you may provide.
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Kevin Pharis
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Re: Running a 16 Valve Model C Roof Head

Post by Kevin Pharis » Wed Jul 16, 2025 10:17 pm

The C model head was intended for racing. Compared to the A/B/BB heads, it has a bit more compression, a bit more valve size, and 4 intake ports. Would probably run nice and mellow with a really low lift cam to offset the extra valve area, and a moderately sized carb. But of course, what would be the fun in that…?!? These buggers can really scream!


big2bird
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Re: Running a 16 Valve Model C Roof Head

Post by big2bird » Wed Jul 16, 2025 10:39 pm

A couple Winfields and a Bosch ignition, you better have killer brakes and tires.


Howard Tomlinson
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Re: Running a 16 Valve Model C Roof Head

Post by Howard Tomlinson » Wed Jul 16, 2025 11:07 pm

I remember talking to a guy at Hershey from Michigan that specialized in speedsters and he ran a Roof 16V. He mentioned that the original valve springs were prone to breaking or maybe a keeper issue, but modern springs took care of the issue. I'll look around and see if I can find his business card.

Best of luck!

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