L31 Engine Specs 2023


L31 Engine Specs

It is the L31 engine is A General Motors small-block V8 engine that was employed in A wide range of GM vehicles And trucks from 1996 until 2002. Two distinct engines were referred to as the L31:

FeatureVortec 350 L31 (1996-2002)Vortec 5700 L31 (2003-2013)
Engine Type5.7L V85.7L V8
Horsepower255 hp @ 4,600 rpm330 hp @ 5,600 rpm
Torque330 lb-ft @ 2,800 rpm380 lb-ft @ 4,000 rpm
Block MaterialCast IronAluminum
Heads MaterialCast IronAluminum
Crankshaft MaterialForged SteelCast Iron
Main Bearings4-bolt4-bolt
Oil Capacity (qts)66
Oil TypeConventional 5W-30Synthetic 5W-30
Oil Filter TypeACDelco PF45 or an equivalentACDelco PF48 or an equivalent
Recommended Oil Change Interval3,000 miles (severe conditions)5,000 miles (normal conditions)
Estimated Oil Change Cost$40-$80$50-$100


The L31 engine has been described as A robust And reliable small-block V8 engine that was Manufactured through General Motors from 1996 to 2002.


Its displacement is 5.7 milliliters And generates The equivalent of 255 horsepower At 4,600 rpm and 300 lb.-ft. of torque, At 2800 rpm. This L31 engine block features A bore That is 4.00 inches And the stroke is 3.48 inches.

It is A well-liked upgrade for small-block engines of the past because of its price And the high airflow.


I hope this article will provide you with the Details that you require Regarding L31 engines. L31 engine. Thanks for taking the time to read!