400 BB Mopar dyno test

400 can make some serious power if built right. We did a 400 last year. It was made out of the following

516 heads 2.08/1.60 valves NO PORTING(rules for class)
Stock 2bbl intake no gasket match or porting
Stock Truck exhaust manifolds, ran 2 1/4 exhaust on the dyno
10.5 to 1 compression
Voodoo 60303
Stock rockers
Holly 4412 2bbl with adapter(1" spacer basically)

It made 331HP @5200rpm 475TQ @2500rpm

Plus we were able to balance the stock Cast crank internally without any heavy metal. Bob weight was >2200g