We have redesigned and
expanded our GM LS1 series
product lines! These new
pistons utilized our
dedicated Forged Side Relief
(FSR) forging that was
specifically designed for
high output GM LS1 series
engines. In addition we have
found ways to reduce weight
and maintain the durability
needed for both street and
racing use. Lightweight and
extremely durable, these
pistons are machined for
1.5mm, 1.5mm, 3.0mm rings.
Wrist pin upgrade recommended
above 800hp.
Includes:
-
Pin #927-2250-15-51C (106g)
- Round Wire Locks #
927-073-MW
Features:
- High strength FSR
forging
- Accumulator
Grooves
- Double Pin
Oilers
- Offset Wrist
Pin
Piston Specifications
- Make: CHEVROLET
- Engine: CHEVROLET LS
GEN III/IV
- Bore
Diameter: 3.905
-
Compression Height: 1.315
- Compression Ratio with
64cc chamber volume: 8.7
- Compression Ratio with
66cc chamber volume: 8.5
- Compression Ratio with
72cc chamber volume: 8.0
- Piston Volume: -20.2
- Cylinder Head: LSX/L92 12
DEG
- Piston Pin
Outside Diameter: 0.927
- Piston Pin Length: 2.250
- Piston Pin Material:
5115
- Ringset
Included: No
- Top
Compression Ring Thickness:
0.06
- Second
Compression Ring Thickness:
0.06
- Oil Ring
Thickness: 0.1175
-
Piston Material: 2618
-
Forging Type: FSR
-
Piston Avg Weight: 421
- Pin Wall Thickness: 0.170
- Piston Type: Dish