Valigrunt Performance

Putting the Muscle back into Classic Cars

Small Block Mopar 360 Stroker Sleeper Motor

May 17, 2024

This Chrysler by Chrysler came with the 360 Small block mopar.  The small LA Block in the car already made impressive power from factory for its time but we wanted to keep that original look but with allot more oomph.  The challenge was making those cast iron heads and intake flow more power.

The block was stroked from 360 Cubic inches to 408 Cubic inches with a 9.5:1 compression ratio.  Inside we placed Hypereutectic pistons, strengthened standard rods with bolt kit, Mopar performance Cast Iron Crank, Hydraulic Roller Cam shaft and 1.5 Roller Rockers.

The factory J heads and cast iron intake manifold were extensively ported and all this was topped with a 850cfm quadrajet hidden under the huge air cleaner.

For all intents and purposes the motor looks the part in it’s original Mopar blue but well and truely hides all of her go fast gear inside.

Video: