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-   -   New 548 builds, AK Racing heads (https://www.offshoreonly.com/forums/general-q/353600-new-548-builds-ak-racing-heads.html)

mike tkach 04-27-2018 06:56 AM

joe,i am not saying a cast core camshaft won,t work but i won,t use them in a marine endurance engine,for me it,s just not worth the risk of failure.

articfriends 04-27-2018 10:54 AM

Like mentiined, other than touchy tip in a 2000 cfm throttle body wont hurt anything on a big motor. I run a scorpion 2000 cfm on my 462 pontiac efi street car and have tested with them on my dyno on a 548 and wasnt no ill effects i can see

MILD THUNDER 04-30-2018 08:36 PM

I'd go bigger on the cam if 700HP is the goal. Something like

HR-254/400-2S-14 IG Hydraulic Roller Camshaft for Chevrolet 1967-1995 V-8, 396-454


or
http://www.cranecams.com/product/car...detail&p=24234

getrdunn 04-30-2018 09:25 PM

It would sound good anyway. :)

snapmorgan 05-08-2018 12:08 PM

AK Racing heads showed up today. They look like very nice pieces. Top secret camshafts are ordered, just waiting on the blocks to be decked now.

snapmorgan 05-08-2018 12:22 PM

https://cimg1.ibsrv.net/gimg/www.off...e15d6eff06.jpg
https://cimg5.ibsrv.net/gimg/www.off...98a29324f5.jpg
https://cimg7.ibsrv.net/gimg/www.off...11732a2c03.jpg

Baja Rooster 05-08-2018 03:00 PM

Gorgeous. Are the rims on top of the heads deeper than normal? More height for valve train?

adk61 05-08-2018 03:21 PM

yes the valve train galley is slightly deeper which helps in many ways, valve train clearance, oil control, prevents V/C gasket leakage, and if one was to use a gasket with a spring oiler the spray would hit higher up on the spring... subtle differences make improvements, all in all this is a new casting and I love working with it...

rvtransport 05-09-2018 09:23 AM

Looking forward to seeing numbers. Should be a nice package. :popcorn:

getrdunn 05-09-2018 03:08 PM

Top secret camshaft I love it. What did your chambers and intake runners cc out at?


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