LS7 Engine Specs 2023


LS7 Engine Specs

The engine LS7 is a legendary 7.0L V8 beast manufactured through General Motors from 2005 to 2013. 

It is renowned for its superior performance, power output, and inclusion in a variety of popular American muscle automobiles. Here’s a brief overview of its most important specifications:

Displacement7.0L (427 cubic inches)
Horsepower505-512 HP (depending on the application)
Torque4-480 lbs (depending on the type of application)
Bore and Stroke4.125″ x 4.00″
Compression Ratio11.5:1
Block MaterialAluminum
CrankshaftForged steel
Connecting RodsForged steel
PistonsForged aluminum
Cylinder HeadsAluminum with dry-sump oil grease
ValvetrainDual overhead camshafts, with four valves for each cylinder.
Fuel SystemDirect injection
Engine Oil Capacity8.5 4 quarts (with filter)
Oil TypeSynthetic 5W-30
Oil Filter TypeGM PF48
Average Oil Change Cost$75-$150 (depending on the area and the labor)


The engine of the LS7 is an absolute marvel, sporting a 7.0L small block made of aluminum design that produces 505 hp at 6,300 RPM and the torque is 470 lb-ft.


Its unique characteristics including its high-lift, a long-duration camshaft dowelled, billet-steel main caps as well as forged steel crankshafts along with titanium connecting rods distinguish it as an extremely powerful powerhouse. 


Although there are some reliability issues it is still a preferred option for builders and enthusiasts because of its features and potential for upgrades. 

I hope that you find this information useful and would like to thank you for exploring the amazing LS7 engine!