A fork of Rural Dictionary
A piston engine which has a displacement of 6.0 liters or more , often in the form of a V8.
The LS7 in my car is a big block, it has more then 7 liters in displacement.
Refering to when a car is producing enough exhaust to spin the the turbochargers turbine fast enough to create noticeable boost.
My GT30R turbo spool up at about 4,500 RPM.