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 4.045 Bore,3.500 stroke, 6.000 rod 10.2 to 1 comp with a 64cc head - Lefts & Rights (CP Bullets BCR1320-045)
Small Block Chevy Flat Top -6cc 20/30 shift 23 Heads 4.045 Bore,3.500 stroke, 5.700 rod 10.2 to 1 comp with a 64cc head - Lefts & Rights (CP Bullets BCR1350-045)
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|
Make |
Chevrolet |
|
Engine Type |
Small Block Bullet Special Race Series |
|
Part Number |
BCR1350-045 |
|
Bore (in) |
4.045 |
|
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 |
360 |
|
Piston Weight |
460 |
|
Style |
FT |
|
Valve Reliefs |
2 VR's |
|
Gas Port |
Yes |
| Product Name | Small Block Chevy Flat Top -6cc 20/30 shift 23 Heads 4.045 Bore,3.500 stroke, 5.700 rod 10.2 to 1 comp with a 64cc head - Lefts & Rights (CP Bullets BCR1350-045) |
|---|---|
| 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 BCR1350-045 pistons?
The BCR1350-045 pistons are designed to achieve a compression ratio of approximately 10.2 to 1 when used with 64cc heads. However, final compression will depend on the specific engine setup, including head gasket thickness and any machining done to the block or heads.
What type of ring gaps should I use with the BCR1350-045 pistons?
Ring gaps for the BCR1350-045 pistons should be set according to the specific application and intended use. Generally, a good starting point is to consult the manufacturer's recommendations or the engine builder's guidelines, taking into account the expected RPM and boost levels.
Do I need to machine the piston bores for the BCR1350-045 pistons?
Yes, it is essential to ensure proper bore clearance for the BCR1350-045 pistons. The bores may require honing to achieve the correct clearance, which is critical for performance and longevity. Always measure the bore after machining to confirm the fit.
What is the weight of the BCR1350-045 pistons, and how does it affect my engine build?
The BCR1350-045 pistons weigh 460 grams each. This weight can influence the engine's reciprocating mass and overall balance. When building your engine, consider the total rotating assembly weight and ensure it is balanced for optimal performance.
Are the BCR1350-045 pistons suitable for high RPM applications?
Yes, the BCR1350-045 pistons are designed for race applications and can handle high RPMs. However, ensure that your engine is properly built, tuned, and that all components are compatible with the intended RPM range to maintain reliability.
