I'm porting a set of iron gt40s and I'd like to know how much I can teardrop and streamline the valve guides' bosses before I run into any trouble. Ditto for raising the roof of the ports, and for increasing the flow bias on the intake port.
Any pictures of your finished gt-40s would be very helpful.
Just in case your going to talk crap; yes - I have searched the forums, I'd like to know about gt40s, not P's or e7's, yes - I've ported heads before and I know to get a 3 angle job, good valves, shave the gt40s for compression, and spend most of my time porting the bowls; and no, I'm not going to go buy some AFR's.
Thanks in advance.
Any pictures of your finished gt-40s would be very helpful.
Just in case your going to talk crap; yes - I have searched the forums, I'd like to know about gt40s, not P's or e7's, yes - I've ported heads before and I know to get a 3 angle job, good valves, shave the gt40s for compression, and spend most of my time porting the bowls; and no, I'm not going to go buy some AFR's.
Thanks in advance.