SB Chev 305 Sprint Car 3.796 bore, 3.500 Stoke, 5.700 Rod, 1.550 CH, Vert Gas Ports Flat Top 9:7 CR 1mm,1mm, 2mm rings - Lefts & Rights (CP Bullets BCRE2031-060)
Small Block Chevy 350 20/30 Shift Bore 4.065 CH 1.550 Stroke 3.500 Rod 5.700 Flat Top Head - Lefts & Rights (CP Bullets BCR1350-065)
Small Block Chevy 350 20/30 Shift Bore 4.065 CH 1.250 Flat Top Head - Lefts & Rights (CP Bullets BCR1320-065)
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 |
BCR1320-065 |
|
Bore (in) |
4.065 |
|
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 |
10.2 |
|
Pin |
.927 x 2.500 |
|
Ring Thickness |
1.2 x 1.2 x 3.0mm |
|
VR Depth |
-.345 / SP |
|
Cubic Inch |
363 |
|
Piston Weight |
415 |
|
Style |
FT |
|
Valve Reliefs |
2 VR's |
|
Gas Port |
Yes |
| Product Name | Small Block Chevy 350 20/30 Shift Bore 4.065 CH 1.250 Flat Top Head - Lefts & Rights (CP Bullets BCR1320-065) |
|---|---|
| Brands | CP Carrillo |
| Engine | SB Chevrolet / Holden |
| 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 BCR1320-065 pistons?
For the BCR1320-065 pistons, a typical bore clearance of 0.0030" to 0.0035" is recommended. However, this may vary based on specific engine build conditions and intended use, so always consult your engine builder for precise measurements.
What compression ratio can I expect with the BCR1320-065 pistons?
The BCR1320-065 pistons provide a compression ratio of approximately 10.2:1 when used with 64cc cylinder heads. Keep in mind that actual compression can be affected by factors such as head gasket thickness and combustion chamber modifications.
What type of ring set is compatible with the BCR1320-065 pistons?
The BCR1320-065 pistons are designed to work with a ring set featuring dimensions of 1.2mm x 1.2mm x 3.0mm. Ensure that the rings are properly gapped according to your engine's specifications for optimal performance.
Are there any specific machining requirements for the BCR1320-065 pistons?
Yes, the BCR1320-065 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 checked for fitment and that the engine is balanced with the full rotating assembly.
What is the weight of the BCR1320-065 pistons, and how does it affect engine performance?
The BCR1320-065 pistons weigh 415 grams each. Lighter pistons can improve engine response and reduce reciprocating mass, but it's important to balance them with the rest of the rotating assembly to maintain reliability and performance.
