HP marking on block

Harmonj · August 27, 2010 at 11:41 PM

My dad and I are in the process of refreshing my 65 K GT Koupe. We were breaking the engine down, to get an idea of what we had, and were surprised to see that the motor had never undergone a major overhaul. Crank, pistons, main caps were all original and marked "Std. bore". When we removed the rear cover plate on the engine block we found the engine was marked with an "HP". Is this standard for all K code blocks? Is there a way to protect this marking if I wanted to hot tank the block?

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Edited by - SixT5HiPo on 08/31/2010 00:27:28

6hypo5conv_old · August 28, 2010 at 5:28 AM

Mine looked very similiar, the very best thing to do is photograph the "HP" from many different angles and use a grease marker to duplicate when you put the engine back together-there is almost always a very faint residue left for you to follow.

65Rangoon_old · August 28, 2010 at 9:42 AM

Found the same thing on my engine which was sourced from a '65 Fairlane. On the rear of the intake manifold was the notation A/T in yellow grease pencil as well.

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cobraboy · August 28, 2010 at 2:43 PM

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Mine looked very similiar, the very best thing to do is photograph the "HP" from many different angles and use a grease marker to duplicate when you put the engine back together-there is almost always a very faint residue left for you to follow.

When you say use a grease marker, do you mean a Markal paintstick?.

I have a set of these but they dont seem to work that well. I wonder is there a trick to using them?

Thanks

6hypo5conv_old · August 29, 2010 at 5:53 AM

Yes, I think a Marcall marker would work fine.

lscman_old · August 29, 2010 at 9:35 AM

From all the Hipo's I had and seen the blocks were painted with HP.Don't know what kind of paint but almost all the Mustangs had orange dab along with the painted HP.Early blocks I've had and seen also had sequel numbers on them.

cobraboy · August 29, 2010 at 5:36 PM

Cheers guys

I had a go at replicating the marks I found on the axle when I detailed it. The Markal stick was a bit crumbly, but I guess came out OK, the surface was rough so they might go better on a smooth surface.

Harmonj · August 30, 2010 at 10:27 AM

Thank you all for the advice. Looks like going the Markal route is the way to go. I was worried about someone coming along afterward and disputing the authenticity.

Harmonj · August 30, 2010 at 6:26 PM

one last question... Will re-marking the block have any detrimental effect on the overall value of the engine and car?

Edited by - harmonj on 08/30/2010 18:26:50

Participate now!