Yep the hellcrates are cool. Several folks on the mopar site are doing modern 3G hemi conversions. One guy with a 64 barracuda doing a jaguar IRS in the back, big brakes, and whipple charging a 360.
I'm more old skool. Got a 78 360 out of a truck, nice 4" stroker crank, eagle H beams, KB sttoker pistons. Gonna be about 9.8-1 on pump has with aluminum heads. With a 4 speed, and 3.73s looking for about 425hp, not a real hairy cam because it will be dressed out to appear like a stock 273 V8 kinda like taking a chevy 383 stroker and making it appear like a 307 lol. it should be plenty. 67-69 Notchback coupes are the lightest, stiffest barracuda. Dry weight on one of these is only 2,800 lbs. I think a hellcrate would make it too crazy to drive. The new challengers weigh in at close to 4,000 lbs.
I have 1/8" wall thickness 2x3 box steel i used for subframe connectors, and popped 3/4" drain holes in them to make em appear stock. Cut slots in the rear foot well pans to run em through. They only stick up 1/2" thru the floor pan at the back. Then i made torque box gussets circled in yellow out of 1/8" steel and bent em on a brake at work. Cars gonna be stiff as heck. Will force the suspension to work.
Big block 4 speed, hemi cars and convertible cars all have similar torque boxes, stamped out of thinner stuff.
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