Small Block Chevy Flat Top -6.83cc All 23 Heads 4.000 Bore,3.480 stroke, 5.700 rod 9.6 to 1 comp with a 64cc head (CP Bullets BC1021-STD)
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|
Make |
Chevrolet |
|
Engine Type |
Small Block |
|
Part Number |
BC1021-STD |
|
Bore (in) |
4 |
|
Stroke (in) |
3.48 |
|
Rod Length (in) |
5.7 |
|
Comp Height |
1.56 |
|
Head Type |
All 23 deg |
|
Head CC |
64 |
|
Dome / Dish Height |
FT |
|
Dom/Dish CC |
-6.9 |
|
Compression Ratio |
9.8 |
|
Pin |
.927 x 2.500 |
|
Ring Thickness |
1.5 x 1.5 x 3.0mm |
|
VR Depth |
-.310 / -.310 |
|
Cubic Inch |
350 |
|
Piston Weight |
440 |
|
Style |
FT |
|
Valve Reliefs |
2 VR's |
|
Gas Port |
No |
| Product Name | Small Block Chevy Flat Top -6.83cc All 23 Heads 4.000 Bore,3.480 stroke, 5.700 rod 9.6 to 1 comp with a 64cc head (CP Bullets BC1021-STD) |
|---|---|
| Brands | CP Carrillo |
| 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 BC1021-STD pistons?
For the BC1021-STD pistons, a typical bore clearance of 0.0030" to 0.0035" is recommended. However, this can vary based on the specific application and operating conditions, so always consult with your engine builder for the best fit.
What compression ratio can I expect with the BC1021-STD pistons and a 64cc head?
The BC1021-STD pistons are designed to achieve a compression ratio of approximately 9.8:1 when used with a 64cc cylinder head. Keep in mind that actual compression may vary based on factors such as gasket thickness and deck height.
What type of ring gaps should I set for the BC1021-STD pistons?
For the BC1021-STD pistons, a common starting point for ring gaps is 0.004" per inch of bore for the top rings and 0.003" per inch of bore for the second rings. Adjustments may be necessary based on your specific application and intended use.
Can the BC1021-STD pistons be used with a turbocharged setup?
Yes, the BC1021-STD pistons can be used in turbocharged applications, but it's crucial to ensure proper tuning, fuel quality, and boost levels are managed. Reliability will depend on the overall engine build and clearances.
What is the weight of the BC1021-STD pistons, and how does it affect performance?
The BC1021-STD pistons weigh approximately 440 grams each. Lighter pistons can improve engine response and reduce stress on the connecting rods, but ensure that the entire rotating assembly is balanced for optimal performance.
