I thought it just had to be a factory produced head .
2.03 Cylinder Heads and Intake Manifold MUST be correct* OEM casting, have correct* original casting numbers and be of correct* original material.
This may very well be the most important and teched F.A.S.T. rule.
Note: Any cylinder head or intake manifold that is not the correct* casting number, must be approved and published on the F.A.S.T. website.
Casting date codes are not looked at and are not part of the tech process.
Like I said...... read the rules.
I’d suggest perusing the rules before buying any parts.
Current SB record holder:
View attachment 1715668008
View attachment 1715668009
The rules for the heads and intake have been the same since day one.
W2’s were never legal.
We’ve probably spent enough time muddying up Jesse’s thread.
Those spark plug divots look pretty deep. I wonder what spark plug Mopar recommended with those heads and what timing did they usually like?
I just read something recently that talked about those divots and there was a purpose behind them .
That's interesting. I can't see how that would improve homogeneity. If the head doesn't scavenge well I cant see how that would help getting it started.
Also with it being so deep I would imagine indexing the plugs would be a given.
It provides a space for a more homogeneous mixture
The whole chamber provides a space for a more homogenous mixture
I cant see how that design would do that and also the plug is enclosed so once you get the flame going there's stuff in the way.
WHAT DOSE THE NEW 769 W2 HEAD LOOK LIKE, ANY BODY HAVE A PICTUREThink of it as a pre-chamber.