Traditional GTA Engine Cylinder Heads
#38367 from Butch Kummer · Rule change · TB 25-07 (2025-07 Fastrack)
In GCR, Section 9.1.2.G., IX Engine Specifications, Appendix B:, change as follows:
"5. Chevrolet cylinder heads must be Dart II cast iron heads, part #11310010p, which replaced part #1112B and#1115B. Chevrolet cylinder heads must be Dart cast iron part #10310010P (which replaced part #1112B and #1115B), or Dart
aluminum part # 11310010P.
6. Ford cylinder heads must be Dart II cast iron heads, part #5302B or World Products’ Roush head, part #053040. Ford cylinder
heads must be Dart cast iron part #13410010, Dart aluminum part #13210010, or World Products’ Windsor cast iron part
#053040."
In GCR, Section Appendix L. TA2 Rules, change as follows:
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"C.4.3: Chevrolet cylinder heads must be Dart Iron Eagle 200 cast iron heads, part #10310010, which replaced part #1112B and#1115B. Chevrolet cylinder heads must be Dart cast iron part #10310010P (which replaced part #1112B and #1115B), or Dart
aluminum part # 11310010P.
C.4.4: Ford cylinder heads must be Dart Iron Eagle 200 cast iron heads, part #5302B, or World Products’ Windsor Sr. iron heads,part #053040. Ford cylinder heads must be Dart cast iron part #13410010, Dart aluminum part #13210010, or World Products’
Windsor cast iron part #053040."