Quote:
Originally Posted by blykins
Jon Kaase won the 2013 Engine Masters Challenge with a DOHC modular Ford engine.
Bore size was 3.720".
Stroke was 4.700"
They pull them over 7000 rpm, averaging the hp from 3000-7000, if I recall correctly.
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Brent I'm with you on this, but just to keep things honest. The 4 valve per cylinder heads on the modular flow very well and Kasse certainly made them flow better. If you stuck 2 valve non-canted 60's factory style heads on this bore stroke combination, it would likely be all in by 3000 rpm. If you worked up a good set of modern Windsor heads, you could take it a long way, but I doubt you could match the 4 valve heads.
Good flowing heads have enabled the long strokes to do what was never thought possible. I believe emissions drove the technology that direction.