Small Block Chevy Flat Top -6cc 20/30 shift 23 Heads 4.035 Bore,3.500 stroke, 5.700 rod 10.1 to 1 comp with a 64cc head - Lefts & Rights (CP Bullets BCR1350-035)
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)
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)
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|
Make |
Chevrolet |
|
Engine Type |
Small Block Bullet Special Race Series |
|
Part Number |
BCR1320-035 |
|
Bore (in) |
4.035 |
|
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 |
358 |
|
Piston Weight |
408 |
|
Style |
FT |
|
Valve Reliefs |
2 VR's |
|
Gas Port |
Yes |
| Product Name | 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) |
|---|---|
| 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 BCR1320-035 pistons?
For the BCR1320-035 pistons, a typical bore clearance of 0.0030" to 0.0035" is recommended. This should be confirmed based on the specific application and the builder's preferences.
What compression ratio can I expect with the BCR1320-035 pistons and 64cc heads?
The BCR1320-035 pistons are designed to achieve a compression ratio of 10.1:1 when used with 64cc cylinder heads. However, actual compression may vary based on the specific engine assembly and machining tolerances.
What type of ring gaps should I set for the BCR1320-035 pistons?
For the BCR1320-035 pistons, it is advisable to set the ring gaps according to the manufacturer's specifications and the intended use of the engine. Typically, a gap of 0.018" to 0.022" for the top rings and 0.020" to 0.024" for the second rings is a good starting point for performance applications.
Do the BCR1320-035 pistons require any special machining?
Yes, the BCR1320-035 pistons may require specific machining such as bore honing to ensure proper fitment. Always verify clearances and fitment with your engine builder to achieve optimal performance.
What is the weight of the BCR1320-035 pistons and how does it affect performance?
The BCR1320-035 pistons weigh 408 grams each. Lighter pistons can improve engine response and reduce stress on the connecting rods, but it's important to balance the entire rotating assembly for optimal performance.
