Anyone know what the diameter of the exhaust port on the head is?
Thanks
Thanks
The opening our CNC'd ones are 1.5" x 1.535"
Looks like O.E. is 1.425"-1.430"
looks like a circle, does not measure so.
1-3/4" on a n/a low revving build.
1-7/8" on a power adder car or one with head and cams
Oh would you happen to know what the exhaust flow is at peak valve lift?