Manley Performance Small Block Chevrolet 4.040/1.050

- 2 Barrel Class

- 2618 high strength material

- Perfect ring groove to skirt squareness

- Round wire locks included

- Pressure balance groove

- Semi-banded skirt for improved skirt stability

- 2.300" x .095" wall Premium Chrome Moly pin

- Gas Ported .043" x .043" x 3mm RINGS

- Bore Size 4.040"

- Rod Length 6.200"

- Stroke 3.480"-3.500"

- Comp Distance 1.050"

- Piston & Pin wgt/grms 441

- Piston wgt/grms 369

Common Features

Dome Volume: -2.5cc
Crown Thickness: .155"
Compression Ratio: 10.6:1 w/ 64cc & 3.48" Stroke
Top Ring: 1/16" or .043" Gas Ported, .155" down
Second Ring: 1/16" or .043"
Oil Ring: 3/16" or 3mm
Valve Notches: .210" Int., .150" Exh.
Maximum Fly Cut: .270" Int., .170" Exh.
Max. Valve Sizes: 2.125" Int., 1.650" Exh.
Valve Angle: 22°
Pin Included: Premium Chrome Moly P/N 42241 ( .095" wall, 72 grams, 2.300" long, .927" dia. )
Round Wire Locks: P/N 42262 - .061" wide
Recommended Piston Clearance: .005" measured 1.100" from bottom of the oil ring