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LS 404ci engine specifications and technical details

Chevy LS 404ci All 15°/L92 Bore 4.010 CH 1.110 Stroke 4.000 Rod 6.125 CR 11 Flat Top Head 68cc (CP Bullets BLSR1142-010)

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Chevy LS 6.0L 68cc head casting and port design detail

Chevy LS 6.0 L Head:All 15° / L92 Bore:4.030", 1.305" CH, +10cc Dome, 11.8:1 CR, 68 head CC (CP Bullets BLS1138-030)

Chevy LS 5.3L Flat top -2.7cc All std 15 deg/ L92 3.905 bore, 3.622 stroke, 6.095 rod 10.6 to 1 Comp with 61.2cc head (CP Bullets BLS1124-125)

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
BLS1124-125
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Make

Chevrolet

Engine Type

LS Series

Part Number

BLS1124-125

Bore (in)

3.905

Stroke (in)

3.622

Rod Length (in)

6.095

Comp Height

1.337

Head Type

Std 15 deg/ L92

Head CC

62

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

-.180 / -.130

Cubic Inch

347

Piston Weight

410

Style

FT

Valve Reliefs

2 VR's

Gas Port

No

More Information
Product Name Chevy LS 5.3L Flat top -2.7cc All std 15 deg/ L92 3.905 bore, 3.622 stroke, 6.095 rod 10.6 to 1 Comp with 61.2cc head (CP Bullets BLS1124-125)
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 size for the BLS1124-125 pistons?

The BLS1124-125 pistons are designed for a bore size of 3.905 inches. Ensure that your engine block is machined to this specification for optimal fitment.

What compression ratio do the BLS1124-125 pistons achieve with a 62cc head?

These pistons achieve a compression ratio of 10.6:1 when used with a 62cc cylinder head. This ratio is suitable for performance applications, but ensure proper tuning and fuel quality for reliability.

What is the weight of the BLS1124-125 pistons?

Each BLS1124-125 piston weighs 410 grams. When building your engine, consider the overall rotating assembly weight for balance and performance.

Do the BLS1124-125 pistons have valve reliefs?

Yes, the BLS1124-125 pistons feature two valve reliefs, which are necessary for clearance with the LS engine's valves. Ensure your camshaft profile is compatible to avoid interference.

What is the pin size for the BLS1124-125 pistons?

The BLS1124-125 pistons use a pin size of .945 inches by 2.250 inches. Make sure your connecting rods are compatible with this pin size for proper assembly.

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