Jim. . .again, Read the question! Nobody asked if extrude honing is more effective than polishing ports! Which by the way costs an arm and part of one leg vs. a 30 dollar polishing kit and some time. He asked what grit to use. Nowhere in there was a request to see how many times he could prompt someone to use the words "I, me, my, and mine"
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1986 four-eyed LX coupe, 358 Cleveland, Tremec TKO600/centerforce clutch, dish cut Probe forged pistons, comp cams hyd.roller cam, .579/.588@224/230, Edel.performer, 670 holley street avenger, CPR custom built long tubes, ported and polished 4bbl heads, manley valves, beehive springs, MSD peo-billet dist/MSD6AL, fluidamper, 5 lug conv. with 17x8 bullits there's more but it's still not finished yet.
Oh, and the oldest boy is turning his 89 GT into a FFR cobra this next summer.
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