383 Stroker Balanced Rotating Assembly 5.7" Rods, Hyperutectic Pistons Flat Top, For '57-'85 2 Pc Seal.

PERFORMANCE ROTATING ASSEMBLIES FROM MOTORSPORTS UNLIMITED FOR STREET TO ALL OUT RACE!

These Rotating Assemblies are completely balanced and include everything you need to completely stroke your 350 small block chevy into a 383 stroker. This Rotating Assembly kit includes the following:

• New cast crankshaft,

• New hyperutectic pistons with coated skirts

• New moly rings

• New I-Beam full floating connecting rods (no need to have pistons pressed on) with ARP Cap Screws that are clearanced for Camshaft to rod interference

• New Rod and Main bearings

• New flexplate and harmonic balancer
  
  

These Rotating Assemblies are completely balanced at Motorsports Unlimited using our state of the art, CWT Industries Multi-Bal 5500. Don't be fooled by others claiming to be factory balanced assemblies — that just means that the individual components are weight matched sets, such as the pistons and rods. We individually weigh each component (and correct if necessary) to achieve a Bob weight for that particular Rotating Assembly, then we machine the crankshaft to match the bob weight. In this kit you will also be supplied a Bobweight card and Balance sheet for your Rotating Assembly. For more information on why you should have us balance and build your Rotating Assembly, please check out our Tech Article on the home page.

• 1 Set of H860CP Speed Pro Pistons Flat Top Approx Compression Ratio (10:1 With 64cc)

• 1 Scat  Cast Steel Crankshaft 3.750" Stroke 2pc seal

• 1 Set Of Scat I-Beam Floating Rods With 3/8" Cap screw Bolt (this is an upgrade from the original rods that come with this kit)

• 1 Set of 2M139 Hastings Moly Std Tension Rings

• 1 Set of King CR807SI Rod Bearings

• 1 Set of King MB557SI Main bearings

• 1 Powerbond PB1050N Harmonic Balancer

• 1 Allstar Performance ALL26815 168 Tooth Flexplate

Compression Ratio Chart