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Chevrolet BBC 454 Dome 508 CP Pistons S5250 High-Performance Engine

Chevrolet BBC 454 Dome 508, Bore 4.500, CH 1.645, Stroke 4.000, Rod 6.135 (CP Pistons S5250)

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Chevrolet BBC 454 Dome 540 CP Pistons S5220

Chevrolet BBC 454 Dome 540, Bore 4.500, CH 1.270, Stroke 4.250, Rod 6.385 (CP Pistons S5220)

Chevrolet BBC 454 Dome 531, Bore 4.600, CH 1.645, Stroke 4.000, Rod 6.135 (CP Pistons S5254)

These pistons are Made to Order and may not be in stock. Please allow 6-8 weeks for delivery
AUD$1,951.82
SKU
S5254
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Make

Chevrolet

Engine Type

BBC 454 Dome

Part Number

S5254

Bore (in)

4.6

Stroke (in)

4

Rod Length (in)

6.135

Comp Height

1.645

Dome / Dish Height

0.7

Dom/Dish CC

47.5

Pin

.990 x 2.930

Ring Thickness

1/16 x 1/16 x 3/16 in.

VR Depth Int/Exh

-.310 / .125

Piston Weight

694

Gas Port

No

Capacity

532

Shlef (RPO) or Made to Order (MTO)

MTO

NOT Suitable for nitrous oxide systems (NOS); or for supercharged or turbo; Wrist pins and pin-fitting included at no cost; Accumulator groove included; Double pin oilers, force fed from oil ring; Balanced to +/- 1 gram; Radius valve reliefs; Generous valve relief depths allow for high lift; Pick lock grooves for easy lock removal; Suitable for angle milled heads; Fully CNC machined. Notes: B – Supplied with Double Spiral Locks, D – Rail Support included, O – Made for 10.200 Block Height, P – 9.2 Deck Height, Q – Also fits 4.000 Stroke and 6.385 Rod, R – Can be used with 4.500 Stroke and 10.180 block with 6.535 Rod, S – Supplied with .150 Wall (151g) or optional .180 Wall (175g).

More Information
Product Name Chevrolet BBC 454 Dome 531, Bore 4.600, CH 1.645, Stroke 4.000, Rod 6.135 (CP Pistons S5254)
Brands CP Carrillo
Engine Big Block Chev
Make GM

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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 are the specific applications for the CP Pistons S5254?

The CP Pistons S5254 are designed specifically for the Chevrolet Big Block 454 engine. They are suitable for applications with a 4.000 stroke and a rod length of 6.135 inches, and they are made for a 10.200 block height with a 9.2 deck height.

What is the recommended compression height for the S5254 pistons?

The recommended compression height for the S5254 pistons is 1.645 inches. This measurement is critical for achieving the desired compression ratio in your engine build.

Can I use the S5254 pistons with forced induction systems?

No, the S5254 pistons are not suitable for nitrous oxide systems, supercharging, or turbocharging. They are designed for naturally aspirated applications only.

What is the weight of the S5254 pistons, and how does it affect performance?

The S5254 pistons weigh 694 grams. This weight is a consideration for engine balance and performance, particularly at high RPMs. Ensure your rotating assembly is balanced with these pistons for optimal performance.

What machining considerations should I keep in mind when using the S5254 pistons?

When using the S5254 pistons, ensure that the bore clearance and ring gaps are set correctly by the engine builder. Additionally, check that the valve reliefs are adequate for your specific camshaft profile, especially if using high lift cams.

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