351C valve train specs

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Oct 24, 2002 | 06:13 PM

78SupercabPowerstroke

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Joined: Jan 2002

Posts: 44

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From: Jamestown USA

351C valve train specs

I need specs for valve springs for a 73 351C. valve spring pressures and heights. Thanks

I'm putting in a cam that is a little more aggressive, and wondering if we need different springs. the current springs are factory, but relatively new, so i don't want to replace if i can get by with these

Thanks
Steve

Oct 24, 2002 | 06:45 PM

Bill_Beyer

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Joined: Aug 2000

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From: PacNW

351C valve train specs

>I need specs for valve springs for a 73 351C. valve spring
>pressures and heights. Thanks
>
>I'm putting in a cam that is a little more aggressive, and
>wondering if we need different springs. the current springs
>are factory, but relatively new, so i don't want to replace
>if i can get by with these

I'd check with the cam manufacturer to be sure but the general rule of thumb I go by is that if the cam has .500" gross lift or more then I would put new springs in it.

Oct 25, 2002 | 10:32 AM

beartracks

Lead Driver

Joined: Nov 2000

Posts: 6,640

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From: Albuquerque

351C valve train specs

I'm thinkin your old springs are going to be worn out anyway.

Oct 28, 2002 | 11:56 AM

James Hewett

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Joined: Oct 2002

Posts: 132

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From: NiagaraRiverArea, Riversi

351C valve train specs

I have a Crane cam in my C351 and use stock springs and Crane adjustable roller rockers from Summit and it has performed great for at least the last 5yrs. It is what was considered as a torque cam and I don't drag at the dragstrip. Liken street use only.
jim
p.s. make sure to clean and locktite new rocker studs on this set up