Douglas,
Intake runner length does not make much difference in power,but if you want the most top end power,make them short.
http://www.rossmachineracing.com/ http://www.ka-t.org/intakemanifoldbasic.php I believe they will help you figure your intake volume needed.
I bought 2" aluminum tubing w/a .120 wall thickness that worked for my cylinder head,what size are your intake ports? That is for my runners.
IIRC,my ports are 1.71"
The 2" tubing w/a .120 wall comes out to be 1.76",so it is a little bigger than my cyl head intake port so I will match port the intake port to 1.76" ,the same as the 2" id of the tubing.
Did you get the pro port job?
If so,,I think they are 1.80"???
Email me if you want more info.
MBHD
