Small Block Chevy Flat Top -6cc 20/30 shift 23 Heads 4.035 Bore,3.500 stroke, 6.000 rod 10.1 to 1 comp with a 64cc head - Lefts & Rights (CP Bullets BCR1320-035)
Small Block Chevy Flat Top -6cc 20/30 shift 23 Heads 4.040 Bore,3.500 stroke, 6.000 rod 10.2 to 1 comp with a 64cc head - Lefts & Rights (CP Bullets BCR1320-040)
Small Block Chevy Flat Top -6cc 20/30 shift 23 Heads 4.040 Bore,3.500 stroke, 5.700 rod 10.2 to 1 comp with a 64cc head - Lefts & Rights (CP Bullets BCR1350-040)
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|
Make |
Chevrolet |
|
Engine Type |
Small Block Bullet Special Race Series |
|
Part Number |
BCR1350-040 |
|
Bore (in) |
4.04 |
|
Stroke (in) |
3.5 |
|
Rod Length (in) |
5.7 |
|
Comp Height |
1.55 |
|
Head Type |
All 23 deg heads |
|
Head CC |
64 |
|
Dome / Dish Height |
FT |
|
Dom/Dish CC |
-6 |
|
Compression Ratio |
10.1 |
|
Pin |
.927 x 2.500 |
|
Ring Thickness |
1.2 x 1.2 x 3.0mm |
|
VR Depth |
-.345 / SP |
|
Cubic Inch |
359 |
|
Piston Weight |
457 |
|
Style |
FT |
|
Valve Reliefs |
2 VR's |
|
Gas Port |
Yes |
| Product Name | Small Block Chevy Flat Top -6cc 20/30 shift 23 Heads 4.040 Bore,3.500 stroke, 5.700 rod 10.2 to 1 comp with a 64cc head - Lefts & Rights (CP Bullets BCR1350-040) |
|---|---|
| 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 BCR1350-040 pistons?
For the BCR1350-040 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 it's best to consult with your engine builder for precise specifications.
What compression ratio can I expect with the BCR1350-040 pistons?
The BCR1350-040 pistons yield a compression ratio of approximately 10.2:1 when used with 64cc cylinder heads. Keep in mind that actual compression may vary based on factors such as head gasket thickness and combustion chamber modifications.
Do the BCR1350-040 pistons require any specific machining?
Yes, the BCR1350-040 pistons may require specific machining for optimal fitment, including checking and potentially honing the bore for proper clearance, as well as ensuring the ring grooves are set correctly for the 1.2mm rings.
What type of fuel is recommended for engines using the BCR1350-040 pistons?
Engines using the BCR1350-040 pistons should ideally run on high-octane fuel to prevent detonation, especially given the 10.2:1 compression ratio. Always ensure your fuel quality matches the performance requirements of your engine setup.
What is the weight of the BCR1350-040 pistons, and how does it affect performance?
The BCR1350-040 pistons weigh 457 grams each. While this weight is typical for performance applications, lighter pistons can improve engine response and reduce rotating mass. However, ensure that the engine's balance and overall assembly are considered to maintain reliability.
