Big Block Chevy 571ci 4.625 Bore 1.120 CH 14.1:1 CR (CP Bullets BBCRE5320-125)
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|
Make |
Chevrolet |
|
Engine Type |
Big Block |
|
Part Number |
BBCRE5320-125 |
|
Bore (in) |
4.625 |
|
Stroke (in) |
4.25 |
|
Rod Length (in) |
6.535 |
|
Comp Height |
1.12 |
|
Head Type |
BB3 Xtra / Head Hunter |
|
Head CC |
118 |
|
Dome / Dish Height |
0.65 |
|
Dom/Dish CC |
46.9 |
|
Compression Ratio |
14.3 |
|
Pin |
.990 x 2.750 |
|
Ring Thickness |
.043 x .043 x 3.0 |
|
VR Depth |
-.310 / .100 |
|
Cubic Inch |
571 |
|
Piston Weight |
681 |
|
Style |
Dome |
|
Valve Reliefs |
2 VR's |
|
Gas Port |
Yes |
| Product Name | Big Block Chevy 571ci 4.625 Bore 1.120 CH 14.1:1 CR (CP Bullets BBCRE5320-125) |
|---|---|
| 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 is the recommended bore clearance for the BBCRE5320-125 pistons?
For the BBCRE5320-125 pistons, a typical bore clearance of 0.0035" to 0.0045" is recommended. However, this can vary based on your specific engine build and operating conditions, so always consult your engine builder for precise specifications.
What are the implications of the 14.1:1 compression ratio for my engine setup?
The 14.1:1 compression ratio of the BBCRE5320-125 pistons is suitable for high-performance applications, typically requiring high-octane fuel and precise tuning. Ensure your engine is built to handle this compression to avoid detonation and ensure reliability.
How should I prepare the piston ring grooves for installation?
Before installing the piston rings on the BBCRE5320-125, ensure that the ring grooves are clean and free of debris. Use a suitable ring groove cleaner and check for any burrs or imperfections that could affect ring sealing.
What is the significance of the gas ports on these pistons?
The gas ports on the BBCRE5320-125 pistons enhance ring seal by allowing combustion gases to pressurise the ring lands, improving performance and reducing blow-by. Ensure proper alignment and installation to maximise their effectiveness.
What is the expected weight of the BBCRE5320-125 pistons, and how does it affect my engine's performance?
The BBCRE5320-125 pistons weigh 681 grams each. This weight is typical for high-performance applications and can affect engine balance and RPM response. Consider this in your overall rotating assembly weight calculations for optimal performance.
