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Help Identify Ported 862 heads

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Old Sep 18, 2012 | 12:21 AM
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Default Help Identify Ported 862 heads

Can someone please help me identify who ported these heads and help identify the springs.

according to the information i got these are GTP ported Stage 2.5 Ported 862 heads with comp cam dual valve spring kit and upgraded valves. 2.02 int. 1.57 ex.















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Old Sep 18, 2012 | 02:11 AM
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Looks like a home hackjob to me. Cnc machine leaves tell tale marks in the port, and I see a lot of inconsistenes in the posts and the shape of the chamber around the perimeter looks funky.

Springs, who knows. It's hard to identify springs by looking at them. Have them tested and compare to new specs.
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Old Sep 18, 2012 | 03:55 AM
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Thanks for the reply..Definitely getting the heads/springs checked out.

FYI GTP does the CNC first then finish them off by hand. Not sure if it will make a difference in appearance but they dont look like a hack job in person.
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Old Sep 18, 2012 | 04:00 AM
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I shouldn't have used "hack job" they are definitely good looking ports, but it looks like they have been totally hand ported.
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Old Sep 18, 2012 | 04:54 AM
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Lol okay you had me worried there. For the price I think I got a good deal considering it already has a bigger valve job done, upgraded valves and crossing fingers the springs are Comp Cam.
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Old Sep 18, 2012 | 04:56 AM
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BTW what's the best way to clean these up to remove some of the carbon build up?

Last edited by lilpb1; Sep 18, 2012 at 10:12 AM.
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Old Sep 18, 2012 | 04:32 PM
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anyone else got any idea who couldve ported them?
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