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K vs J heads [message #316924]

Mon, 01 May 2017 17:41

pjburt

Messages: 436
Registered: February 2016
Location: Fresno, California

Karma: 1

Senior Member

I have located a pair of K heads and a pair of J heads.
Is there any advantage to using K heads over our J heads? I know the valves and runners are larger in the Ks but is that any real advantage with our application? I want to maximize torque.
Thanks

Jerry Burt Fresno, CA.
73 Gmc 26' Canyon Lands
Members: FMCA - GMCMI - GMCWS
A truly happy person is one who can enjoy the scenery on a detour.

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Re: [GMCnet] K vs J heads [message #316927 is a reply to message #316924]

Mon, 01 May 2017 18:00

James Hupy

Messages: 6806
Registered: May 2010

Karma: -62

Senior Member

No. K heads are high compression, large valve and runner heads. The valve
seats are not induction hardened. They will bolt on. Made for high rpms. No
torque below about 2500 rpms.
Jim Hupy

On May 1, 2017 3:42 PM, "Jerry Burt" wrote:

> I have located a pair of K heads and a pair of J heads.
> Is there any advantage to using K heads over our J heads? I know the
> valves and runners are larger in the Ks but is that any real advantage with
> our
> application? I want to maximize torque.
> Thanks
> --
> Patti & Jerry Burt
> 73 Gmc 26' Canyon Lands -
> Photos - http://jburt.smugmug.com/GMC-Motorhome
> Lots of upgrades but lots to do to make it ours.
> Members: FMCA - GMCMI - GMCWS - Pacific Cruisers - 49ers
>
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Re: [GMCnet] K vs J heads [message #316930 is a reply to message #316927]

Mon, 01 May 2017 18:31

pjburt

Messages: 436
Registered: February 2016
Location: Fresno, California

Karma: 1

Senior Member

Thanks Jim.

Jerry Burt Fresno, CA.
73 Gmc 26' Canyon Lands
Members: FMCA - GMCMI - GMCWS
A truly happy person is one who can enjoy the scenery on a detour.

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