GMPP 18* heads, cam, intake...

[clay69camaro]

Parts have finally sold.

[Flash68]

Aren't those shaft rockers?

[clay69camaro]

Aren't those shaft rockers?

Fixed,

Yes they are thank you.

[clay69camaro]

bump

price update $4,200 obo

[clay69camaro]

Bump

Any offers?

[clay69camaro]

These are back on the market.

I will entertain reasonable offers, I'm looking to get $4K

[clay69camaro]

Bump of course OBO

[clay69camaro]

Bringing it up to the top, with a new price of $3,000

[clay69camaro]

Looking for some Offers

[Track Junky]

The casting number on those heads came in 6 different versions. You might want to post more details.

[clay69camaro]

Not sure I follow you there, I've done my research on these heads and have never come across any literature stating that there are different versions of the same casting. Perhaps you could point me in the right direction?

Thanks,
Clay

[Track Junky]

Your price drop peaked some interest so I decided to do some research since you didn't list combustion chamber or valve sizes. I found this link.

Scroll down to 10134363
http://www.ecbrcnj.com/id14.html

[clay69camaro]

I bought these a long time ago, so the specifics of them are long gone from my memory. I guess i'll have to find a good head shop and have them checked out.

Edit: I just called Hendren Racing in NC where I originally purchased them, and the best info he could give me was that they used all High-port heads but as far as flow and chamber size and specifics I'm going to have to take them somewhere and get them tested/inspected.

[clay69camaro]

Upon further inspection the heads have a stamping on the side M-2, then my friend with the incredible memory said they were CNC'd by M2Race systems and they are the 52cc chamber heads. Exhaust valve is 1.625, Intake is 2.15. I'm trying to get ahold of M2race but their phone number on their website doesn't work neither does the one for them on google. I'm getting somewhere though.

-Clay

[Track Junky]

Well at least you know now. I was hoping they would have had 64 cc combustion chambers. Oh well, GLWS. :thumbsup:

[clay69camaro]

Well thanks for the interest. New knowledge should help with the sale.

[Flash68]

I would spend the $50 or so and have them flowed. That will at least tell where they are at ballpark wise.

Hendren is a nice shop. The old man (Bill) died a couple years back and I think his son took over but they have a solid rep. They really knew SB2 motors well and that's how I ran across them.

My 363 heads I sold last year flowed 373cfm just for reference. That seemed about avg.

[clay69camaro]

I plan on getting them flowed, if I just can't seem to move these for a reasonable price and end up keeping them I will at least know what kind of parts to pick for the motor build.

Hopefully they end up being sold though, I'd really like to go with a 5.3L or 6L twin turbo set-up.

[clay69camaro]

Updated the price $3,000.

I had them flowed at Shaver Specialties in Torrance CA. The owner who flowed them said they flowed well, 326 at .800 lift, 320 at .700 lift. His flowbench reads low according to him, he did a comparison between his flowbench and another model, he said I would be around 340-350 on another flowbench. So take that for what you will. He also informed me the heads could pick up some flow with a new valve job, other than that he said they were solid.

I'll dig up the flow numbers and post a picture if I can find it. I recently moved so everything in the new apartment is a mess.

[clay69camaro]

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