Small Block Chevy Flat Top -6cc 20/30 shift 23 Heads 4.060 Bore,3.500 stroke, 5.700 rod 10.3 to 1 comp with a 64cc head - Lefts & Rights (CP Bullets BCR1350-060)
Small Block Chevy Flat Top -7.1cc All 23 Heads 4.125 Bore,4.000 stroke, 6.000 rod 11.9 to 1 comp with a 64cc head (CP Bullets BC1110-STD)
Small Block Chevy Flat Top -6cc 20/30 shift 23 Heads 4.060 Bore,3.500 stroke, 6.000 rod 10.3 to 1 comp with a 64cc head - Lefts & Rights (CP Bullets BCR1320-060)
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|
Make |
Chevrolet |
|
Engine Type |
Small Block Bullet Special Race Series |
|
Part Number |
BCR1320-060 |
|
Bore (in) |
4.06 |
|
Stroke (in) |
3.5 |
|
Rod Length (in) |
6 |
|
Comp Height |
1.25 |
|
Head Type |
All 23 deg heads |
|
Head CC |
64 |
|
Dome / Dish Height |
FT |
|
Dom/Dish CC |
-6 |
|
Compression Ratio |
10.2 |
|
Pin |
.927 x 2.500 |
|
Ring Thickness |
1.2 x 1.2 x 3.0mm |
|
VR Depth |
-.345 / SP |
|
Cubic Inch |
362 |
|
Piston Weight |
415 |
|
Style |
FT |
|
Valve Reliefs |
2 VR's |
|
Gas Port |
Yes |
| Product Name | Small Block Chevy Flat Top -6cc 20/30 shift 23 Heads 4.060 Bore,3.500 stroke, 6.000 rod 10.3 to 1 comp with a 64cc head - Lefts & Rights (CP Bullets BCR1320-060) |
|---|---|
| Brands | CP Carrillo |
| 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 compression ratio for the BCR1320-060 pistons?
The BCR1320-060 pistons are designed to achieve a compression ratio of approximately 10.2:1 when used with 64cc cylinder heads. This ratio is suitable for performance applications but should be verified based on your specific engine setup and fuel quality.
What are the specific machining requirements for the BCR1320-060 pistons?
When using the BCR1320-060 pistons, ensure that the bore clearance is set correctly according to your engine's specifications. Additionally, confirm that the ring gaps are appropriate for your application, as this will affect performance and reliability.
What type of valve reliefs do the BCR1320-060 pistons have?
The BCR1320-060 pistons feature two valve reliefs, which are designed to accommodate typical valve sizes in 23-degree heads. Ensure that your valve train setup is compatible to avoid interference.
What is the weight of the BCR1320-060 pistons, and how does it affect performance?
Each BCR1320-060 piston weighs 415 grams. This weight is suitable for high-performance applications, but keep in mind that lighter pistons can improve engine response and reduce stress on the rotating assembly. Always consider the entire rotating assembly's balance.
What is the significance of the gas port feature on the BCR1320-060 pistons?
The gas port feature on the BCR1320-060 pistons helps improve ring seal and reduces blow-by, particularly in high-performance applications. This can lead to better power output and efficiency, but proper tuning and setup are essential to maximise these benefits.
