How long will an M22 Muncie hold up to 500hp?

427John

Well Known Member
Back when Pro Stock was in it's infancy there GM and Mopar scattershields made with the Toploader bolt pattern but not so much the other way around.As much as people may hate to admit it the Toploader has always been regarded as the strongest muscle car era factory 4 spd. by far even in the small input shaft variety.Thats not saying that it is unbreakable we all know that anything can be broken,but there is a reason why the earliest specialized racing 4 speeds such as the Liberty's and Jericho's were based on Toploaders.
 
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