porting

[roach400ex]

looking for porting specs or articles on doing so.

[sleepin400]

do a google search, I found some information from chevy highperformance magazine. Uses the same principles. You should decide if you want to take the valves out when you do it. (you can put new valve seals in too while your at it) You can take the edge off that is about 3/4 below the valve seat.

You can also decide if you want to cut the vlave stem tube thing down alittle also.

The idea isn't to make it huge, but to make it cleaner.


http://www.chevyhiperformance.com/techarticles/95518/

http://www.chevyhiperformance.com/techarticles/46326/

and the contraversal webpage
www.mototuneusa.com/homework.htm

you'll get a headache reading all the info but its worth it if your interested.

a nice quality very low profile dremal will help alot.

good luck, let us know how it turns out.