273 how far below deck are the stock pistons?

273 said
I know 360 is the smarter choice I got a low mileage one in the shed but I wanna play with 273 looking for 400HP in the 2000-7000 powerband.

Wow...cool...but your going to need a 4.88 or more for that little 273 to really shine :burnout: IMHO.

Is it a 4 speed car ??