X block W5’s 355 ci

Mopar X block brand new

4.020 bore

JE pistons

Mopar 3.50 crank

Child’s & Alberts I beam rods

New piston rings and bearings

Fluid damper harmonic balancer

Water pump

59’ bushed lifters

The cam specs are 278/284 duration @ 0.050". Lobe lift is 0.407".

Used billet msd distributor

New W5 heads, springs and valves

Used W5 Intake needs to be milled to fit heads

Block is O-ringed

4 bolt mains

Sheet metal valve covers


This motor was built but Arrow race engine for ARCA racing and was never used! Best if the best..... motor is set up for dry sump oil but can be switched back to wet very easy. One motor mount on driver side needs was milled off for dry sump oil pump, motor plate needs to be used.


$6000 complete


Or $4000 for short block minus heads, intake, valve covers and distributor

8E1361B2-55EE-467D-961A-F967696DE5C7.jpeg

DEC3914A-7868-4A1E-8FF6-53E885DCBC82.jpeg

8EC994E9-9403-4A80-89A3-37971C95F1E8.jpeg

2FA99827-0F02-4788-A97F-F48B8844F57C.jpeg