Hi, how did you get that much lift with iron heads?

The cylinder bore is notched to clear the 1.960" intake valve, no issue with the exhaust valve.  We had witness marks with the 2.020" valves in one pair of heads, and went back to the smaller valve heads, and 5/16" valve stems.  Joe-JDC

JDC

Where does one find the actual rules?

____________________________

This link is off of the Hot Rod website when looking under 'events'.
EMC Early Iron Rules_2019v4 
These rules were recently updated and there are some things in there that changed from the official set of rules but we were told to not worry about the new changes regarding camshaft lifts.   All engines are required to check out at no more than 0.600" lift at the valves when all the lash is taken up. 

Lorena, Texas (South of Waco)

THANX!

I am interested in how you do against the 327. I assume they can use a much improved cyl head. Will watch closely this go-around.

____________________________

The rules for the head seem ambiguous to me, "OEM mass produced cast iron passenger car cylinder heads are the only type of heads that can be used. Heads must be originally manufactured for the engine application in which it is being used."  Depending on what that means, a mainstream engine may be limited to heads '68 or older, which levels the playing field or it may be able to take advantage of oem development into the 1990s, which potentially puts the Y at a significant disadvantage.


Lawrenceville, GA

I saw a score of 2358 for the Y in a video on facebook, which was the highest score at that time, by a pretty good margin but there are still many more to run.


Lawrenceville, GA

Any updates?  Hot Rod isn't doing a good job of it.


Lawrenceville, GA

These look problematic.
9319-HEADERS: Passenger car chassis style headers required. Header must be manufactured and cataloged to fit a specific passenger car application OEM equipped with the engine type claimed. Manufacturer’s part number must be stamped into the header (better selection for scrubs)
10322-OIL: All engines must be shipped “dry”. Engine will be required to use at least 5 quarts of oil. Participants will only use supplied oil for competition. Propylene Oxide or other oxidizing agents/substances prohibited. Oil is provided at the event. Oil filter must be dry and will be removed for inspection prior to running.
I imagine that cling oil allowed.

The headers being used are excellent.  I don't think there is anything that is significantly better, if any better for a mainstream engine.

From the most recent info, the Y is now in 3rd place.


Lawrenceville, GA