Check out http://www.diyporting.com/ before doing anything else. There is some very interesting information on porting GT40 heads.I have a set of GT40s that are going on my truck . Each exhaust port has EGR ports that aren't needed and cause a lot of turbulence. Is there a cheap epoxy that I can use to fill the port and smooth the roof of the runner out? Or a better method?
Your solution is about where I landed, although haven’t tried it yet. Reports say it’s good for 12 cfm. That’s a lot for not a lot of effort!Epoxy will not stand up to the heat of an exhaust port. JB weld makes a new product that they rate to 400 degree constant, 500 degree intermittent. But the last time I checked, the exhaust port will go over 700 easy...
What's the finger say to epoxy?
As to whether it's a better method I couldn't say,....but tapping the port, plugging it, and grinding it smooth...
I’ve read, re read, and studied those pages many, many times. There is a lot of good DIY porting info out there and that is among the best!Check out http://www.diyporting.com/ before doing anything else. There is some very interesting information on porting GT40 heads.
That’s what I originally wanted to do, but can’t find the rods anywhereA trick with the old 4 barrel Cleveland heads was the braze the exhaust floors up. The ones I have seen are gold colored, so maybe brass???
Joe
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