wrong spec submitted by MOPAR

[Andys dad]

Originally Posted by David Barton

It sounds like Arrow is not up to speed on how racing NHRA Stock Eliminator works. I don't doubt they know how to build engines, but they really should have reviewed the spec sheets provided on NHRA's web site. Actually, they should have been one of the first people to point out the mistake if there was one.

I can guarantee you that if I built the engine I would have checked the spec sheet instead of blaming Mopar. Sure, maybe they submitted the wrong info, but the fact is that the rules were in writing and that is what we go by in NHRA.

OK - I will make one last comment - there was no spec sheet.........get it.......the specs were not published until after the engines were built..... I am not sure how that process worked....if I could delete this thread I would - I was only defending Dave - sorry - my humble apologies to all of you top flight engine builders who know so much more than anyone else


Ron

[Tom P]

Don't the OEM's usually measure differently than the total OD of the valve? I have seen the 428 CJ being called 2.06" in old Ford internal documents instead of 2.09".