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BH57-1075-040 Dodge Hemi engine piston detail shot

BH57-1075-040 Gen3 Dodge Hemi 3.957" bore, 4.080" stroke, 6.125" rod, .866" pin. '03-'08 5.7L head, +2.6cc, 10.75:1 comp. (CP Bullets BH57-1075-040)

BH57-1075-020 Gen3 Dodge Hemi 3.937" bore, 4.080" stroke, 6.125" rod, .866" pin. '03-'08 5.7L head, +5cc, 10.75:1 comp. (CP Bullets BH57-1075-020)

These Pistons are not held in stock in Australia. We ship every Friday from CP Carrillo so please allow up to 2 weeks for delivery to you.
AUD$1,495.45
SKU
BH57-1075-020
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Make

Dodge

Engine Type

Hemi

Part Number

BH57-1075-020

Bore (in)

3.937

Stroke (in)

4.08

Rod Length (in)

6.125

Comp Height

1.1

Head Type

5.7 Hemi

Head CC

85

Dome / Dish Height

0.051

Dom/Dish CC

5

Compression Ratio

10.75

Pin

.866 x 2.250

Ring Thickness

1.5 x 1.5 x 3.0mm

VR Depth

-.160 / -.060

Cubic Inch

397

Piston Weight

436

Style

Dome

Valve Reliefs

2 VR's

Gas Port

No

More Information
Product Name BH57-1075-020 Gen3 Dodge Hemi 3.937" bore, 4.080" stroke, 6.125" rod, .866" pin. '03-'08 5.7L head, +5cc, 10.75:1 comp. (CP Bullets BH57-1075-020)
Brands CP Carrillo
Engine Hemi V8
Make Dodge

Delivery & Freight

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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 BH57-1075-020 pistons?

The BH57-1075-020 pistons provide a compression ratio of 10.75:1 when used with the '03-'08 5.7L Hemi heads. Ensure your engine is tuned appropriately to handle this compression level.

What are the specific machining requirements for the BH57-1075-020 pistons?

When installing the BH57-1075-020 pistons, ensure that the bore clearance is set correctly according to your engine's specifications. Additionally, check that the ring gaps are set by the engine builder for optimal performance.

What is the weight of the BH57-1075-020 pistons?

The BH57-1075-020 pistons weigh 436 grams each. This weight should be considered when balancing the rotating assembly for your engine build.

Do the BH57-1075-020 pistons have valve reliefs?

Yes, the BH57-1075-020 pistons feature two valve reliefs, which are essential for clearance in high-performance applications. Ensure that your camshaft profile is compatible with these reliefs.

What is the pin size for the BH57-1075-020 pistons?

The BH57-1075-020 pistons use a pin size of .866 inches by 2.250 inches. Make sure your conrods are compatible with this pin size for proper fitment.