Re: How much is ever enough?
I took the exhaust port roofs on up to 1.48. the 1 5/8 super comps would handle more than that but I don't think my 289 needs any more.
I'm doing the marked side(from photo) and top of the intakes for 2.10 x 1.28. There was not a lot of work needed on the intake side to get there.
I've been working the valve guide parts of the valve pockets for a while. My question is how close to this
(photo from Weingartner racing of cnc port)
do I really need to get. It seems like a bit of over kill but then I'm only making in the low 400's horsepower and no boost.
1965 289 mustang fastback