Re: Go To The Head of The Class was Re: Group Parts Purchases..?

A race engine builder I have used a fair bit tells me that it is
possible to get better flow figures out of a cast iron 5 port head
than out of the arden 8 port head.

Of course this is after a porting job and valve size increase. The
main reason is the limited amount of room in the head for good
straight ports - you've got those pesky pushrods, water passages and
oil passages to get around which means some tightish bends are
required.

In other words, for less money, a good engine builder can get you more HP
and torque for probably less money.

Mike