ZERO25
01-14-2019, 05:27 PM
With these new rules, is it worth it?
A.Any steel head meeting the following requirements ◦Chevy 23 degree head + or – 1 degree with no larger than a 1.94” intake valve
◦Ford 20 degree head + or – 1 degree with no larger than a 2.02” intake valve
◦Mopar 18 degree head + or – 1 degree with no larger than a 2.02” intake valve
B.Angle milling of heads OK.
C.Multi angle valve job permitted. NO porting, polishing, squaring, or epoxying of ports.
D.Valve size Chevrolet 1.94”, Ford or Mopar 2.02″ intakes and 1.65″ exhausts max.
E.Stainless steel valves permitted.
F.Screw in studs and guide plates permitted.
G.Roller tip rockers. Aluminum rockers and stud girdles permitted. No shaft mounted rockers.
H.Any valve retainers . Any spring permitted.
I.NO aluminum heads permitted.
A.Any steel head meeting the following requirements ◦Chevy 23 degree head + or – 1 degree with no larger than a 1.94” intake valve
◦Ford 20 degree head + or – 1 degree with no larger than a 2.02” intake valve
◦Mopar 18 degree head + or – 1 degree with no larger than a 2.02” intake valve
B.Angle milling of heads OK.
C.Multi angle valve job permitted. NO porting, polishing, squaring, or epoxying of ports.
D.Valve size Chevrolet 1.94”, Ford or Mopar 2.02″ intakes and 1.65″ exhausts max.
E.Stainless steel valves permitted.
F.Screw in studs and guide plates permitted.
G.Roller tip rockers. Aluminum rockers and stud girdles permitted. No shaft mounted rockers.
H.Any valve retainers . Any spring permitted.
I.NO aluminum heads permitted.