Big Block Chevy 571ci 4.625 Bore 1.275 CH 14.3:1 CR (CP Bullets BBCRE5322-125)
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|
Make |
Chevrolet |
|
Engine Type |
Big Block |
|
Part Number |
BBCRE5322-125 |
|
Bore (in) |
4.625 |
|
Stroke (in) |
4.25 |
|
Rod Length (in) |
6.385 |
|
Comp Height |
1.275 |
|
Head Type |
BB3 Xtra / Head Hunter |
|
Head CC |
118 |
|
Dome / Dish Height |
0.65 |
|
Dom/Dish CC |
46.9 |
|
Compression Ratio |
14.2 |
|
Pin |
.990 x 2.750 |
|
Ring Thickness |
.043 x .043 x 3.0 |
|
VR Depth |
-.310 / .100 |
|
Cubic Inch |
571 |
|
Piston Weight |
718 |
|
Style |
Dome |
|
Valve Reliefs |
2 VR's |
|
Gas Port |
Yes |
| Product Name | Big Block Chevy 571ci 4.625 Bore 1.275 CH 14.3:1 CR (CP Bullets BBCRE5322-125) |
|---|---|
| Brands | CP Carrillo |
| Engine | Big Block Chev |
| Make | GM |
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 bore clearance for the BBCRE5322-125 pistons?
For the BBCRE5322-125 pistons, a typical bore clearance of 0.0035" to 0.0045" is recommended. This ensures proper thermal expansion and prevents piston scuffing.
What compression ratio can I expect with the BBCRE5322-125 pistons?
The BBCRE5322-125 pistons provide a compression ratio of approximately 14.2:1 when used with compatible cylinder heads and a suitable combustion chamber volume. Ensure your engine setup can handle this high compression for optimal performance.
What type of fuel is suitable for the BBCRE5322-125 pistons?
Due to the high compression ratio of 14.2:1, these pistons are best suited for high-octane racing fuels or E85. Using lower octane fuel may lead to detonation and engine damage.
Do I need to modify my cylinder heads for the BBCRE5322-125 pistons?
Depending on your specific cylinder head design, you may need to ensure adequate valve clearance due to the dome height of the pistons. It's advisable to check for clearance during assembly to avoid any interference.
What is the weight of the BBCRE5322-125 pistons and how does it affect engine performance?
The BBCRE5322-125 pistons weigh 718 grams each. While this weight is typical for high-performance applications, it's important to balance the entire rotating assembly to minimise vibrations and ensure reliable engine operation.
