Big Block Chevy 13.0cc dome 4.500 Bore 4.250 stroke 6.385 rod, 10.7 to 1 with 118cc head (CP Bullets BBC5313-STD)
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|
Make |
Chevrolet |
|
Engine Type |
Big Block |
|
Part Number |
BBC5313-STD |
|
Bore (in) |
4.5 |
|
Stroke (in) |
4.25 |
|
Rod Length (in) |
6.385 |
|
Comp Height |
1.275 |
|
Head Type |
24 OC |
|
Head CC |
118 |
|
Dome / Dish Height |
0.1255 |
|
Dom/Dish CC |
13 |
|
Compression Ratio |
10.3 |
|
Pin |
.990 x 2.930 |
|
Ring Thickness |
1/16 x 1/16 x 3/16 in. |
|
VR Depth |
-0.31 |
|
Cubic Inch |
541 |
|
Piston Weight |
606 |
|
Style |
Dome |
|
Valve Reliefs |
1 VR with Slant |
|
Gas Port |
No |
| Product Name | Big Block Chevy 13.0cc dome 4.500 Bore 4.250 stroke 6.385 rod, 10.7 to 1 with 118cc head (CP Bullets BBC5313-STD) |
|---|---|
| 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 BBC5313-STD pistons?
For the BBC5313-STD pistons, a typical bore clearance of 0.0030" to 0.0035" is recommended. This ensures proper thermal expansion and prevents piston scuffing during operation. Always verify with your specific engine build requirements.
What compression ratio can I expect with the BBC5313-STD pistons?
The BBC5313-STD pistons are designed to achieve a compression ratio of approximately 10.3:1 when used with 118cc cylinder heads. However, actual compression may vary based on factors such as head gasket thickness and combustion chamber modifications.
What type of ring gaps should I set for the BBC5313-STD pistons?
For the BBC5313-STD pistons, it's advisable to set the top ring gap around 0.020" to 0.022" and the second ring gap around 0.018" to 0.020". Adjustments may be necessary based on your specific application and intended usage.
Can I use the BBC5313-STD pistons with a supercharger or turbocharger?
Yes, the BBC5313-STD pistons can be used in boosted applications, but it's crucial to ensure proper tuning, fuel quality, and boost levels. Reliability will depend on the overall engine build and clearances, so consult with your engine builder.
What is the weight of the BBC5313-STD pistons and how does it affect performance?
The BBC5313-STD pistons weigh 606 grams each. While lighter pistons can improve throttle response and reduce reciprocating mass, the weight of these pistons is typical for high-performance applications. Ensure your rotating assembly is balanced accordingly for optimal performance.
