Can you see if there has been any work done to my heads?

trebor75 said
You are right of course. I copy/pasted the info from my project thread and managed to copy the wrong info. The flue and fever makes me a bit slow haha! Thanks for pointing it out, it's corrected now.

Alright, so this leads me up too the next question. Would it be worth removing them and port them some more?

I'll do some reading on the forum about it.
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No, it wouldn't. You would be better off getting a better set of heads. Even if you are pushing enough air in and out to justify porting them, those heads wouldn't really be the pick of the litter for that IMO. But I may be wrong, my experience is limited, but I know 273 heads are not known for being the best for performance