Small Block Chevy Flat Top -6.83cc All 23 Heads 4.185 Bore,3.750 stroke, 6.000 rod 11.4 to 1 comp with a 64cc head (CP Bullets BC1100-060)
Small Block Chevy Flat Top -6cc 20/30 shift 23 Heads 4.020 Bore,3.500 stroke, 5.700 rod 10.1 to 1 comp with a 64cc head - Lefts & Rights (CP Bullets BCR1350-020)
Small Block Chevy Flat Top -6cc 20/30 shift 23 Heads 4.000 Bore,3.500 stroke, 6.000 rod 9.8 to 1 comp with a 64cc head - Lefts & Rights (CP Bullets BCR1320-STD)
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|
Make |
Chevrolet |
|
Engine Type |
Small Block Bullet Special Race Series |
|
Part Number |
BCR1320-STD |
|
Bore (in) |
4 |
|
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 |
|
Pin |
.927 x 2.500 |
|
Ring Thickness |
1.2 x 1.2 x 3.0mm |
|
VR Depth |
-.345 / SP |
|
Cubic Inch |
352 |
|
Piston Weight |
404 |
|
Style |
FT |
|
Valve Reliefs |
2 VR's |
|
Gas Port |
Yes |
| Product Name | Small Block Chevy Flat Top -6cc 20/30 shift 23 Heads 4.000 Bore,3.500 stroke, 6.000 rod 9.8 to 1 comp with a 64cc head - Lefts & Rights (CP Bullets BCR1320-STD) |
|---|---|
| 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 bore clearance for the BCR1320-STD pistons?
For the BCR1320-STD pistons, a typical bore clearance of 0.0030" to 0.0035" is recommended. However, always verify with your engine builder as specific clearances may vary based on application and tolerances.
What compression ratio can I expect with the BCR1320-STD pistons?
The BCR1320-STD pistons are designed to achieve a compression ratio of approximately 10:1 when used with 64cc cylinder heads. Ensure that your engine's overall assembly and combustion chamber design align with this ratio for optimal performance.
What type of ring gaps should I set for the BCR1320-STD pistons?
For the BCR1320-STD pistons, it is 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 engine application and intended use.
Do the BCR1320-STD pistons require any special machining?
Yes, the BCR1320-STD pistons may require specific machining such as honing of the bore to ensure proper fitment. Always consult with your engine builder for the best practices tailored to your setup.
What is the weight of the BCR1320-STD pistons, and how does it affect performance?
The BCR1320-STD pistons weigh 404 grams each. This weight can influence engine balance and reciprocating mass, which may affect throttle response and overall performance. Ensure your rotating assembly is balanced accordingly.
