With the A head coming out in the mid 80's i understand the desire to use the 4.84 exhaust pattern because of what was available at the time. But with headers more available now why not update them to a port for the 4.900 bore space like the C460/Thor pattern?
Would love to see some flow-bench data on these heads before and after....
We'll be doing another video when we wrap these heads up and we'll have all of the specs
GREAT WORK!
With the A head coming out in the mid 80's i understand the desire to use the 4.84 exhaust pattern because of what was available at the time. But with headers more available now why not update them to a port for the 4.900 bore space like the C460/Thor pattern?