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LS2 performance piston 4.005 bore 9.2:1 compression

Chevy LS2 Dish -23.9cc All std 15 deg/ L92 4.005 bore, 4.125 stroke, 6.125 rod 9.2 to 1 Comp with 68cc head (CP Bullets BLS1134-005)

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Chevy LS2 Dish -27.5cc piston with 9.2:1 compression ratio

Chevy LS2 Dish -27.5cc All std 15 deg/ L92 4.040 bore, 4.000 stroke, 6.125 rod 9.2 to 1 Comp with 64cc head (CP Bullets BLS1006-040)

Chevy LS2 Dish -27.5cc All std 15 deg/ L92 4.030 bore, 4.000 stroke, 6.125 rod 9.0 to 1 Comp with 64cc head (CP Bullets BLS1006-030)

These pistons may not be held in stock in Australia. If not, there will be a delay of 1-2 weeks.
AUD$1,495.45
SKU
BLS1006-030
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Make

Chevrolet

Engine Type

LS Series

Part Number

BLS1006-030

Bore (in)

4.03

Stroke (in)

4

Rod Length (in)

6.125

Comp Height

1.11

Head Type

Std 15 deg/ L92

Head CC

64

Dome / Dish Height

-0.188

Dom/Dish CC

-27.5

Compression Ratio

9

Pin

.927 x 2.250

Ring Thickness

1.5 x 1.5 x 3.0mm

VR Depth

-.200 / -.155

Cubic Inch

408

Piston Weight

413

Style

Dish

Valve Reliefs

2 VR's

Gas Port

No

More Information
Product Name Chevy LS2 Dish -27.5cc All std 15 deg/ L92 4.030 bore, 4.000 stroke, 6.125 rod 9.0 to 1 Comp with 64cc head (CP Bullets BLS1006-030)
Brands CP Carrillo
Engine GM / LS
Make Chevrolet, GM, Holden, LS Chev

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What information do I need to match these pistons to my engine?

You need the engine code, bore size, stroke, rod length, pin diameter and target compression ratio. These determine the correct piston compression height and crown design.

How should ring gaps be set for these pistons?

Ring gaps must be set by your engine builder based on fuel type, boost level and the intended rpm range. Forced-induction engines usually require larger gaps.

Are forged pistons suitable for street engines?

Yes. Forged pistons handle detonation and high cylinder pressure better than cast units. Your builder should set the piston-to-bore clearance to suit your application.

What is the recommended compression ratio for the BLS1006-030 pistons?

The BLS1006-030 pistons are designed for a compression ratio of 9.0:1 when used with a 64cc head. Ensure that your engine's specifications align with this setup for optimal performance.

What are the specific bore and stroke dimensions for the BLS1006-030 pistons?

These pistons are designed for a 4.030-inch bore and a 4.000-inch stroke. It's crucial to verify that your engine block is machined to these specifications for proper fitment.

What is the weight of the BLS1006-030 pistons?

The BLS1006-030 pistons weigh 413 grams each. This weight should be considered when balancing your rotating assembly to maintain engine performance and reliability.

Do the BLS1006-030 pistons have valve reliefs?

Yes, the BLS1006-030 pistons feature two valve reliefs. This design is essential for clearance with the LS engine's valves, especially at higher RPMs.

What is the dish volume of the BLS1006-030 pistons?

The dish volume for the BLS1006-030 pistons is -27.5cc. This contributes to the overall compression ratio and should be factored into your engine's calculations.

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