I've been watching that happen for over 50 years- - - - -so- - - - -YES! Also, headers and full sized GM starters don't mix- - - - -I've also seen hot-soak no crank problems on header-equipped engines since the 1970's or so. You either need a heat shield, or a racing type gear reduction starter that has more pipe clearance. There's also a really good header fix involving a cutting torch and a set of rams' horn exhaust manifolds.
Jerry


"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!