A question about Poly 318s



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Faulkner
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A question about Poly 318s

Post by Faulkner » Fri Nov 09, 2018 9:49 pm

I received an inquiry from a Plymouth Owners Club member, about an engine being offered for sale. It's got the scalloped valve covers that are the hallmark of Polys - here's the information he emailed:
POC Member wrote:On block in front of and below left head FLP8-072978
Casting number in front of and below right head 1737929
The engine and intake are painted silver with black valve covers.
I've read that the casting number was shared among a number of displacements with the same block - just, different strokes and bores. But I understand from here, that the stamp indicates a '58 318. Does anyone have a differing opinion, or additional information? And, were the Fury 318's, different than the standard 318's in 1958 - and if so, in what way?

BTW - Faulkner's 318, which I bought from eBay represented as a '58 block, is stamped with LP8 + a serial number.

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RICKYMOPAR
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Re: A question about Poly 318s

Post by RICKYMOPAR » Sun Nov 11, 2018 11:03 am

FLP is the prefix for the 1958 Fury A engine. Special Fury 318 engine included re-curved dual point distributor, mechanical camshaft and dual four-barrel WCFB carburetors.

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Mark Merritt
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Re: A question about Poly 318s

Post by Mark Merritt » Sun Nov 11, 2018 4:01 pm

Dan: for what it is worth my Fury has the original motor and I think the car was made in June 59. The left side stamp is MP8326478 the casting # on the other side reads 737929 with A #2 above the numbers. I did not see A #1 starting at the beginning. Mine is the 318 with 2 barrel. Mark
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Faulkner
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Re: A question about Poly 318s

Post by Faulkner » Sun Nov 11, 2018 9:35 pm

Mark Merritt wrote:Dan: for what it is worth my Fury has the original motor and I think the car was made in June 59. The left side stamp is MP8326478 the casting # on the other side reads 737929 with A #2 above the numbers. I did not see A #1 starting at the beginning. Mine is the 318 with 2 barrel.
Mother MoPar, in her inimitable fashion! I suspect a 2-737929 block is the same as a 1737929 block, just a year later :roll: Thanks for the info, Mark.
RICKYMOPAR wrote: FLP is the prefix for the 1958 Fury A engine. Special Fury 318 engine included re-curved dual point distributor, mechanical camshaft and dual four-barrel WCFB carburetors.
Thanks, Rick - and apparently also a higher compression - 9.25:1 (according to the POC member who contacted me, but also corroborated by Bernie Brouillet). The "F" in the "FLP" is the difference.
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RICKYMOPAR
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Re: A question about Poly 318s

Post by RICKYMOPAR » Mon Nov 12, 2018 8:50 pm

Yes 9.25 CR but .75 less than the optional 350CID B engine.

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Faulkner
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Re: A question about Poly 318s

Post by Faulkner » Mon Nov 12, 2018 9:26 pm

You know your numbers Rick! the GC 361... (*sigh*.) It would be nice.
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