Quote:
Originally Posted by Mike Schwartz
Are there any other differences between an NHRA Stock car and a IHRA Crate Motor Stock car, other than the engine?
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You're also allowed minor suspension mods for tire clearance (i.e.: 3/4" offset kit for leaf springs on Mopars.) and you can have a trunk mounted battery without a matching one up front. There were originally a few cars built with springs moved into frame rails, but they were getting away from that as too radical. They also revised other rules shortly after inception that originaly allowed other brand rear ends (i.e: Ford 9" in place of 8 3/4" - sounds like FS!) and tightened up on hood scoop rules to keeping original hole specs & sealed/unsealed configurations, like with "regular" Stock rules. They also allowed replacement aluminum radiators before NHRA did.