For sale. Ported 6X-4 heads
 

These are freshly done and ported to 270 cfm Int and 210 Exh .
Fitted with 1.77” valves.
Fresh valve job with 3 angle on the exh.

Intake seat is at a stock 30 degree.
The intake flange is sized to a RA4 gasket.

Just add your spring package and rocker studs.
Valve installed height averages 1.730”

Heads are milled .010”

$700 firm and you pay shipping.

Steve.
914 420 4356 EST

Heads
 

I’ll take those. PM sent

Can you post pics? Since the larger ex valve was installed, is there a hardened seat installed for pump gas use? What is chamber cc?

Yes pictures would be nice and who flowed the heads? And do you have flow sheets ?

Do you guys know who Steve M is?

I am certain he ported, did the assembly, valve job and flowed the heads.