Hands down, the best
forged piston for your high
performance LS engine! Our
Asymmetrical FSR (Forged Side
Relief) forging is engineered
for today’s high power
normally aspirated and forced
induction LS engines. The
exclusive asymmetrical skirt
maintains a larger skirt area
on the heavily stressed major
thrust side, while reducing
friction with a smaller skirt
on the minor thrust side. The
result is a high strength,
lightweight piston that
outperforms the competition!
Note: For applications over
800hp, a thicker wall wrist
pin is recommended.
Features:
- Pin #927-2250-15-51C
(106g) for use with 6.125 Rod
Length
- Round Wire
Locks # 927-073-MW
Includes:
- Accumulator
Grooves
- Double Pin
Oilers
- Offset Wrist
Pin
Piston Specification:
- Make: CHEVROLET
- Engine: CHEVROLET LS
GEN III/IV
- Bore
Diameter: 4.005
-
Compression Height: 1.304
- Compression Ratio with
64cc chamber volume: 10.6
- Compression Ratio with
68cc chamber volume: 10.1
- Compression Ratio with
70cc chamber volume: 9.9
- Piston Volume: -5
-
Cylinder Head: LS 12 DEG/15
DEG COMBO VR
- Piston
Pin Outside Diameter: 0.927
- Piston Pin Length:
2.250
- Piston Pin
Material: 5115
-
Ringset Included :No
-
Top Compression Ring
Thickness: 0.048
-
Second Compression Ring
Thickness: 0.06
- Oil
Ring Thickness: 0.1175
- Piston Material: 2618
- Forging Type: FSR
-
Piston Avg Weight: 407
- Pin Wall Thickness: 0.150
- Piston Type: Flat