New full set of HASTINGS piston rings.

Suit LS 5.3 standard 3.780in/96.00mm Bore  1.5 1.5 3.0mm

HASTINGS MANUFACTURING 2M4978 Specifications
1st Oil Groove                    3.00 MM
1st Oil Ring Material            Steel Rail / Stainless Expander
1st Oil Ring Surface Treatment    Chrome Rail
2nd Groove                    1.50 MM
2nd Ring Material            Grey Iron
2nd Ring Surface Treatment    Phosphate
Engine Bore (in.)               3.780 in.
Engine Bore (MM)                96.00 MM
Top Groove                    1.50 MM
Top Ring Material            Steel
Top Ring Surface Treatment    Plasma Moly

 Made in the USA

The recommended end gap is determined by the bore size and the application which the ring set will be
utilized. Below is a chart which contains the recommended end gap factor. To use this chart, multiply the
bore size by the ring end gap factor to obtain the minimum end gap which should be achieved. Example:
4.000” bore street engine with cast piston the top ring end gap factor is .004”, thus 4.000” x .004” = .016”
minimum end gap. It should be observed that for every .001” increase in bore diameter the ring end gap is
increased by .003”.

A common practice in performance applications is file fitting piston end gaps to a precise end gap using
slightly oversized rings. Most Performance Ring sets are available in file fit (+.005”) oversizes. The end gap
refers to the clearance between the two ends of the piston ring when installed into the cylinder bore. File
fitting end gaps is best done with a professional ring grinding tool, however if filing by hand always file from
the outside diameter towards the inside diameter to avoid chipping of the face coating. It is recommended to
file fit equal amounts from each side of the gap while keeping the gap ends square and parallel.

• Here at Malex Motorsports all of our items are in stock in our Sydney based store, ready to ship or pick up.
• NOW IN SMEATON GRANGE!