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Early prostock iron heads.

General engine tech -- Drag Racing to Circle Track

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Steve.k
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Early prostock iron heads.

Post by Steve.k » Fri Jun 19, 2020 3:50 pm

Guys a friend and i bought some early Cleveland prostock high port heads. They have a stamping of CHE 7529. Does anyone know who or what that stamping would mean. We are assuming che is abbreviation for a business? Thanks.

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Re: Early prostock iron heads.

Post by The Iron Icon » Fri Jun 19, 2020 3:58 pm

Quick Google showed cylinder head express and cylinder head exchange. One of which was/is in California for last 35+ years. Could you post pics of those ports and chambers? Would like to see them and what they were going to!

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Re: Early prostock iron heads.

Post by Steve.k » Fri Jun 19, 2020 6:31 pm

Interesting. Never have heard of them.
D44A7152-23B1-4495-9638-D46CF8E9D50C.jpeg[/attachment [attachment=2]A2631855-3D0A-4CB4-B182-9AB3D53DD38D.png
Here try these.
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Re: Early prostock iron heads.

Post by Stan Weiss » Fri Jun 19, 2020 7:58 pm

Steve.k wrote:
Fri Jun 19, 2020 6:31 pm
Interesting. Never have heard of them. D44A7152-23B1-4495-9638-D46CF8E9D50C.jpeg[/attachment

[attachment=2]A2631855-3D0A-4CB4-B182-9AB3D53DD38D.png

Here try these.
Steve,
You posted a flow sheet. Did you flow them and if so what head? The head you posted a picture of has none of the intake ports ready to flow.

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Re: Early prostock iron heads.

Post by stealth » Fri Jun 19, 2020 9:08 pm

Those wings bolted in there with slot head screws are classic.....very cool!
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Re: Early prostock iron heads.

Post by PRH » Sun Jun 21, 2020 10:31 am

I wonder what those vanes were worth on the bench......and the dyno.
Somewhat handy with a die grinder.

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Re: Early prostock iron heads.

Post by mt-engines » Sun Jun 21, 2020 9:12 pm

PRH wrote:
Sun Jun 21, 2020 10:31 am
I wonder what those vanes were worth on the bench......and the dyno.
Probably $10 to the right guy.

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Re: Early prostock iron heads.

Post by bob460 » Sun Jun 21, 2020 10:27 pm

Steve.k wrote:
Fri Jun 19, 2020 3:50 pm
Guys a friend and i bought some early Cleveland prostock high port heads. They have a stamping of CHE 7529. Does anyone know who or what that stamping would mean. We are assuming che is abbreviation for a business? Thanks.
Steve stamping is CHA 7529............


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Re: Early prostock iron heads.

Post by mag2555 » Mon Jun 22, 2020 6:41 am

With the floor veins in that position it was more to deal with fuel management then air flow I would say!

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Re: Early prostock iron heads.

Post by Old School » Mon Jun 22, 2020 7:47 am

Seems I remember a porting shop called Cylinder Heads America in the early 70's. That is all I remember, no names. Can anyone add anything else? There were also a couple of magazine articles about milling the exhaust ports and putting the plates on in that same time frame.

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Re: Early prostock iron heads.

Post by piston guy » Mon Jun 22, 2020 12:24 pm

Cylinder Heads America was out here in Canoga Park. They were primarily known for SBC heads but obviously did others. 'Vanes" were popular add ons to 351C intake ports. These would not be from Dyno or Glidden.

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Re: Early prostock iron heads.

Post by mag2555 » Mon Jun 22, 2020 12:25 pm

Boy that's massive sheer taking place on the Intake side going from 368 cfm down to 344!

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Re: Early prostock iron heads.

Post by Steve.k » Tue Jun 23, 2020 12:10 am

I have two sets. The one set is at Tim Halsteads and the other is here. The first set i have been flowed and thats the flow sheet there. Not sure how i stuck that in there. My set here were made by Paul Jenkins in Daytona. He tells me he was good friends with Dyno don in those days and they worked heads together. The set of pauls used epoxy not vanes. It sounds like roush favoured the vane style? Im not sure.

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Re: Early prostock iron heads.

Post by Kenny M » Tue Jun 23, 2020 12:18 am

I worked for Roush in the late 70s Edger was his head porter and the Veins was to reduce turbulence at high lift. If I remember right the four speed cars got them and the Auto cars got the floors filled. I remember that we also used to Post the heads on the front and back to help to reduce blowing a head gasket.
Last edited by Kenny M on Tue Jun 23, 2020 12:25 am, edited 2 times in total.

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Re: Early prostock iron heads.

Post by Steve.k » Tue Jun 23, 2020 12:20 am

0EC5383A-8CAB-46F9-8E01-70D83B11D332.png
240A9634-EE7A-4C97-B856-8CFA505F4844.png
Heres the Jenkins head. They came with full set of Trw ti valves i used on another project.These heads have those pinned decks also.I think that flow sheet posted above is off another iron set i did. I’ll did the right flow numbers tomorrow for the heads here.
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