These heads pick up tremendously from our cnc port design. Not only do we gain flow but we make huge improvements on velocity. We use bronze taper guides and oversized 2.1” intake valves and 1.65” ex valves paired with Feuling beehive high load springs for cams up to .650 lift and fully cnc each chamber to ensure equal volume then deck for proper head gasket seal. We recommend the use of dome pistons to achieve proper compression.
These heads have supported up to 160hp
**please over package heads bubble wrap and foam are your friend don’t forget to insure your package!
Please fill out engine work order and email it to shop67parts@gmail.com as well as include a copy in your package with your parts
