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)
Small Block Chevy Flat Top -6cc 20/30 shift 23 Heads 4.050 Bore,3.500 stroke, 5.700 rod 10.3 to 1 comp with a 64cc head - Lefts & Rights (CP Bullets BCR1350-050)
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)
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|
Make |
Chevrolet |
|
Engine Type |
Small Block Bullet Special Race Series |
|
Part Number |
BCR1320-045 |
|
Bore (in) |
4.045 |
|
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 |
10.1 |
|
Pin |
.927 x 2.500 |
|
Ring Thickness |
1.2 x 1.2 x 3.0mm |
|
VR Depth |
-.345 / SP |
|
Cubic Inch |
360 |
|
Piston Weight |
410 |
|
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, 6.000 rod 10.2 to 1 comp with a 64cc head - Lefts & Rights (CP Bullets BCR1320-045) |
|---|---|
| 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 bore clearance for the BCR1320-045 pistons?
For the BCR1320-045 pistons, a typical bore clearance of 0.0030" to 0.0035" is recommended. However, this can vary based on the specific engine build and application, so always consult with your engine builder for precise measurements.
What compression ratio can I expect with the BCR1320-045 pistons and 64cc heads?
With the BCR1320-045 pistons and 64cc heads, you can expect a compression ratio of approximately 10.1:1. Keep in mind that the final compression ratio can be affected by factors such as head gasket thickness and deck height.
What type of ring gaps should I use for the BCR1320-045 pistons?
For the BCR1320-045 pistons, a common recommendation is to set the top ring gap at 0.020" to 0.022" and the second ring gap at 0.018" to 0.020". Adjustments may be necessary based on your specific application and operating conditions.
Do the BCR1320-045 pistons require any special machining?
Yes, the BCR1320-045 pistons may require specific machining for proper fitment, including honing of the cylinder bores to achieve the correct clearance. Always verify with your engine builder to ensure optimal performance.
What is the weight of the BCR1320-045 pistons and how does it affect my engine build?
The BCR1320-045 pistons weigh 410 grams each. This weight is important as it can influence the overall balance of the rotating assembly and affect engine response. Ensure your crankshaft and rods are matched accordingly for best performance.
