Mod Motor Tech Forums - Iron GT40s, TFS 1 Cam, 1.6 or 1.7 rockers?

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Quick86

Jun 22, 2006 10:17 AM

Iron GT40s, TFS 1 Cam, 1.6 or 1.7 rockers?

Going with that combo on my 89 shortblock from all the digging around I have done looks like it will work out real well. The question is - what rockers to go with? I've read of lots of people running 1.7s but will they give me piston-valve clearance issues or not on the stock pistons with the stock valve reliefs? :confused:

Thoroughbred

Jun 28, 2006 10:52 AM

check :)

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