Great reference links for adding accurate detail - thanks Dave.
I never noticed the chassis bolting to the rear engine plate. Is it normal for this class and how about other classes?
From t he revised 2013 NHRA rule book:
“Where an SFI 6.1, 6.3, or 9.1 bellhousing is mandatory, a full, onepiece
motor plate is also mandatory at the rear of the engine block.
The motor plate must be constructed of steel or 6061-T6, 7075-T6
or 2024-T3 wrought heat-treated aluminum alloy plate, minimum
1/8-inch thick for 6.1 or 9.1 applications, minimum 3/16-inch thick
for 6.3 applications. In addition to the fastener requirements noted
below, the SFI 6.3 flywheel shield must be fastened to the motor
plate with four 1/2-inch-diameter Grade 5 shoulder bolts or high
strength steel (or titanium) fasteners and nuts…”
Dragsters, Funny Cars, Competition Eliminator, Pro-Mod, Top Sportsmen probably Pro Stock.
All V8 cars with a clutch are required to have an SFI 6.1 rated transmission shield. I don't think that's a bell housing.