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 4.045 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 4.040 Bore,3.500 stroke, 6.000 rod 10.2 to 1 comp with a 64cc head - Lefts & Rights (CP Bullets BCR1320-040)
For shipping cost -add all the products you would like, then navigate to the shopping cart to calculate shipping quote.
|
Make |
Chevrolet |
|
Engine Type |
Small Block Bullet Special Race Series |
|
Part Number |
BCR1320-040 |
|
Bore (in) |
4.04 |
|
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 |
359 |
|
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 4.040 Bore,3.500 stroke, 6.000 rod 10.2 to 1 comp with a 64cc head - Lefts & Rights (CP Bullets BCR1320-040) |
|---|---|
| Brands | CP Carrillo |
| Make | GM |
Delivery & Freight
We are an Australian-based company that ships items nationally and internationally, usually within 48 hours of receiving your order. High-value items shipped internationally are sent via DHL Express, while lower-value items are sent via Australia Post Express unless otherwise instructed.
You can calculate shipping rates inside the shopping cart. After adding all the products you would like, navigate to the cart and click the ESTIMATE SHIPPING & TAX link. .
If you only see the Click and Collect shipping option, it means that your address was not validated correctly.
If you have issues calculating freight, please get in touch. We are happy to help.
Disclaimer:
Product images are for description purposes only. Actual product may vary.
Shipping calculations available at checkout.
If you are unsure, get in touch by emailing [email protected], messaging us on Facebook, or phoning us at +61 7 5645 1333 (8am to 2pm AET).
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 BCR1320-040 pistons?
For the BCR1320-040 pistons, a typical bore clearance of 0.0030" to 0.0035" is recommended. This ensures proper thermal expansion and prevents piston scuffing during operation. Always verify with your engine builder for specific requirements based on your application.
What compression ratio can I expect with the BCR1320-040 pistons and 64cc heads?
The BCR1320-040 pistons are designed to achieve a compression ratio of approximately 10.1:1 when used with 64cc cylinder heads. However, actual compression may vary based on factors such as head gasket thickness and deck height, so it's advisable to calculate your specific setup.
What type of ring gaps should I use with the BCR1320-040 pistons?
For the BCR1320-040 pistons, a common recommendation for ring gaps is 0.004" to 0.005" per inch of bore. Given the 4.040" bore, this translates to a total gap of approximately 0.016" to 0.020" for the top rings. Adjustments may be necessary based on your specific application and intended use.
Do the BCR1320-040 pistons require any special machining?
Yes, the BCR1320-040 pistons may require specific machining such as honing of the cylinder bores to achieve the correct clearance. Additionally, ensure that the piston pin bores are properly sized and that the valve reliefs are compatible with your cylinder head design.
What is the weight of the BCR1320-040 pistons and how does it affect my engine build?
The BCR1320-040 pistons weigh 410 grams each. This weight is suitable for high-performance applications, but it's important to consider the overall rotating assembly weight for balance. Lighter pistons can improve engine response, but ensure that your crankshaft and rods are also matched for optimal performance.
