Block fretting and main cap walk split factory crankcases under extreme drag race torque loads. The AMS Performance VR38 Alpha 3.8L Pro Edition Crate Engine terminates bottom-end structural movement across this commercial long block repower. This 6-Cylinder 1200HP competition engine requires oil cooler core ultrasonic decontamination before line attachment to protect journal surfaces.

Cast A356-T6 aluminum blocks receive ductile iron flanged sleeves and billet steel main caps for unmatched bottom-end strength. A custom 4340 billet steel crankshaft pairs with heavy-beam connecting rods and extreme-duty forged pistons. This AMS Performance engine core requires a 12V 185A starter draw under cold compression tests. The crate engine weighs 395 lbs dry, measures 28in length, 27in width, 29in height, and accepts 7.0 quarts of oil.

Key Features of AMS Performance VR38 Alpha Pro Edition

Professional drag racing teams buy AMS Performance VR38 Alpha 3.8L Pro Edition Crate Engine units to conquer premier competition brackets. Every industrial engine rebuild integrates precision CNC porting and high-clamp head stud systems to eliminate combustion lift.

- Flanged ductile iron cylinder sleeves prevent bore distortion under thirty-five pounds of boost.
- Main journal oil clearance measures 0.0020in for sustained high-load oil film strength.
- Billet steel main caps eliminate crankcase cap walk at high engine speeds.
- Custom 2618 forged pistons feature anodized ring lands and thick crown sections.
- Multi layer steel head gaskets provide positive cylinder bore fire ring retention.
- This VR38 commercial core features CNC ported cylinder head runners with oversized valves.
- Inconel exhaust valves resist thermal cracking under prolonged antilag launch conditions.

Track Dyno Certification Output

Automated engine dyno logs verify this VR38 long block engine produces 1200 continuous BHP and 950 ft-lbs of torque at 6800 continuous load RPM. Internal oil gallery pressure measures 70 PSI while oil sump temp levels off at 200°F during full load pulls. Exhaust gas temp reaches 1620°F down the primary collector pipe. Cylinder compression tests between 185 PSI and 192 PSI across all six cylinders. Crankshaft center journal runout measures 0.0002in TIR.

Field Deployment Mechanical Boundaries

Blow-off valve vacuum actuators need 6 lbs of spring tension to prevent boost leaks during high-pressure acceleration runs. This high-output competition engine is not intended for regular pump gas commuting, marine sterndrives, or agricultural work.

- Evacuate initial break-in synthetic racing oil after 250 miles or 10 pass hours.
- Check cold valve lash clearances at 0.010in intake and 0.014in exhaust.
- Torque custom high-tensile head studs in four passes to 105 ft-lbs final specification.

Competition Warranty Crate Details

Each engine certified under the AMS Performance assembly standard carries a 1-Year limited competition warranty. The reinforced crate contains the complete long block engine, cast oil pan, front timing covers, valve covers, oil pickup tube, and signed dynamometer test sheet.