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BLS1144-STD Piston Detail View 4.065 Bore Flat Top

Chevy 376ci All LS 15°/L92 4.065 Bore Flat Top (CP Bullets BLS1144-STD)

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Chevy 376ci All LS 15°/L92 Flat Top 4.075 bore 1.330 CH 3.662 stroke 6.098 rod with 68cc head (CP Bullets BLS1147-010)

These pistons may not be held in stock in Australia. If not, there will be a delay of 1-2 weeks.
AUD$1,404.55
SKU
BLS1147-010
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Make

Chevrolet

Engine Type

LS Series

Part Number

BLS1147-010

Bore (in)

4.075

Stroke (in)

3.622

Rod Length (in)

6.098

Comp Height

1.33

Head Type

Std 15 deg/ L92

Head CC

68

Dome / Dish Height

FT

Dom/Dish CC

-2.7

Compression Ratio

10.6

Pin

.945 x 2.250

Ring Thickness

1.5 x 1.5 x 3.0mm

VR Depth

-.175 / SP

Cubic Inch

378

Piston Weight

519

Style

FT

Valve Reliefs

2 VR's

Gas Port

No

More Information
Product Name Chevy 376ci All LS 15°/L92 Flat Top 4.075 bore 1.330 CH 3.662 stroke 6.098 rod with 68cc head (CP Bullets BLS1147-010)
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 bore clearance for the BLS1147-010 pistons?

For the BLS1147-010 pistons, a typical bore clearance of 0.0030" to 0.0035" is recommended. However, this can vary based on the specific application and operating conditions, so it's best to consult with your engine builder for precise measurements.

What compression ratio can I expect with the BLS1147-010 pistons?

The BLS1147-010 pistons are designed to achieve a compression ratio of approximately 10.6:1 when used with 68cc heads. Keep in mind that actual compression can be influenced by factors such as head gasket thickness and combustion chamber modifications.

What type of ring gaps should I use with these pistons?

For the BLS1147-010 pistons, it's advisable to set the ring gaps according to the specific application and intended use. A common starting point for performance applications is 0.0045" to 0.0050" for the top ring and 0.0040" to 0.0045" for the second ring, but always verify with your engine builder.

Are there any specific machining requirements for the BLS1147-010 pistons?

Yes, the BLS1147-010 pistons may require specific machining such as honing of the cylinder bores to achieve the correct clearance. Additionally, ensure that the piston pin bores are properly sized and that the pistons are fitted with the correct pin type for optimal performance.

What is the weight of the BLS1147-010 pistons and how does it affect performance?

The BLS1147-010 pistons weigh 519 grams each. While lighter pistons can improve throttle response and reduce reciprocating mass, it's important to balance them with the rest of the rotating assembly to maintain engine reliability and performance.

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