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That Mopar head has a raised port and I have done the .055 over bore before, that wasn't any fun either! I guess I should have mentioned that I have no problem running a solid roller (where or where is my Scotty Brown ) I am also looking for the pros and cons of the bigger stroke combinations, I have read about using a girdle and billet caps. Maybe it would be best to just invest in a World Block from the get go and go all out to 572?



The combo I listed is what's in the convertible which weighs 3800lbs. click on my sig and watch what it runs. If you want to go that quick with a 4500lb car, definitely go with an aftermarket block and a 572. You'll have so much more grunt and you can use internal oiling with the world block unlike an oem that has a 3/8" pickup.