Interesting for sure. Well top ring is more critical in 'most' apps but am guessing the engine was purpose built for something that has either high peak RPMs and/or sustained higher RPMs? Or possibly for dyno competition? Top ring had a tight gap?
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1970 GTO Judge Tribute Pro-Tour Project 535 IA2
http://forums.maxperformanceinc.com/...d.php?t=760624
1971 Trans Am 463, 315cfm E-head Sniper XFlow EFI, TKO600 extreme, 9", GW suspension, Baer brakes, pro tour car
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