Big Block Chevy 533ci 4.605 Bore 1.245 CH 13.7:1 CR (CP Bullets BBCRE5321-105)
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|
Make |
Chevrolet |
|
Engine Type |
Big Block |
|
Part Number |
BBCRE5321-105 |
|
Bore (in) |
4.605 |
|
Stroke (in) |
4 |
|
Rod Length (in) |
6.535 |
|
Comp Height |
1.245 |
|
Head Type |
BB3 Xtra / Head Hunter |
|
Head CC |
118 |
|
Dome / Dish Height |
0.65 |
|
Dom/Dish CC |
46.9 |
|
Compression Ratio |
13.8 |
|
Pin |
.990 x 2.750 |
|
Ring Thickness |
.043 x .043 x 3.0 |
|
VR Depth |
-.310 / .100 |
|
Cubic Inch |
533 |
|
Piston Weight |
703 |
|
Style |
Dome |
|
Valve Reliefs |
2 VR's |
|
Gas Port |
Yes |
| Product Name | Big Block Chevy 533ci 4.605 Bore 1.245 CH 13.7:1 CR (CP Bullets BBCRE5321-105) |
|---|---|
| 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 BBCRE5321-105 pistons?
For the BBCRE5321-105 pistons, a typical bore clearance of 0.0030" to 0.0035" is recommended. This ensures proper thermal expansion and reduces the risk of piston seizure under high load conditions.
What compression ratio can I expect with the BBCRE5321-105 pistons?
The BBCRE5321-105 pistons are designed to achieve a compression ratio of approximately 13.8:1 when used with compatible cylinder heads, such as the BB3 Xtra or Head Hunter with 118cc chambers. Ensure that your engine's overall setup supports this compression for optimal performance.
What type of fuel is recommended for engines using the BBCRE5321-105 pistons?
Due to the high compression ratio of 13.8:1, it is recommended to use high-octane fuel, typically 98 RON or higher, to prevent detonation and ensure reliable performance. Proper tuning is also essential to accommodate this setup.
Do the BBCRE5321-105 pistons require any specific machining before installation?
Yes, the BBCRE5321-105 pistons may require specific machining, such as honing the cylinder bores to achieve the correct clearance. Always consult with your engine builder to ensure proper fitment and clearances are maintained.
What is the weight of the BBCRE5321-105 pistons, and how does it affect engine performance?
The BBCRE5321-105 pistons weigh 703 grams each. While this weight is typical for high-performance applications, it is important to balance the entire rotating assembly to minimise vibrations and enhance engine performance at high RPM.
