BCRS1021-045 Chevy 358ci All 23° 4.045 Bore Flat Top - Lefts & Rights (CP Bullets BCRS1021-045)
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|
Make |
Chevrolet |
|
Engine Type |
Small Block |
|
Part Number |
BCRS1021-045 |
|
Bore (in) |
4.045 |
|
Stroke (in) |
3.48 |
|
Rod Length (in) |
5.7 |
|
Comp Height |
1.56 |
|
Head Type |
All 23 deg heads |
|
Head CC |
64 |
|
Dome / Dish Height |
FT |
|
Dom/Dish CC |
-4.95 |
|
Compression Ratio |
10.2 |
|
Pin |
.927 x 2.250 |
|
Ring Thickness |
1.2 x 1.2 x 3.0mm |
|
VR Depth |
-.310 / SP |
|
Cubic Inch |
358 |
|
Piston Weight |
417 |
|
Style |
FT |
|
Valve Reliefs |
2 VR's R/L |
|
Gas Port |
No |
| Product Name | BCRS1021-045 Chevy 358ci All 23° 4.045 Bore Flat Top - Lefts & Rights (CP Bullets BCRS1021-045) |
|---|---|
| Brands | CP Carrillo |
| Engine | Chev |
| 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 BCRS1021-045 pistons?
For the BCRS1021-045 pistons, a typical bore clearance of 0.0030" to 0.0035" is recommended. However, final clearance should be determined based on your specific engine build and the materials used.
What compression ratio can I expect with the BCRS1021-045 pistons?
The BCRS1021-045 pistons are designed to achieve a compression ratio of approximately 10.2:1 when used with 64cc cylinder heads. Ensure that your engine's overall setup supports this ratio for optimal performance.
What type of ring gaps should I set for the BCRS1021-045 pistons?
For the BCRS1021-045 pistons, ring gaps should be set according to the intended use of the engine. A common starting point is 0.020" for the top ring and 0.022" for the second ring, but adjustments may be necessary based on boost levels and RPM.
Do the BCRS1021-045 pistons require any special machining?
Yes, the BCRS1021-045 pistons may require specific machining for optimal fitment, including honing of the cylinder bores. Always verify the fitment with your engine builder to ensure proper clearances.
What is the weight of the BCRS1021-045 pistons and how does it affect performance?
The BCRS1021-045 pistons weigh 417 grams each. Lighter pistons can improve engine responsiveness and reduce stress on the connecting rods, but ensure that your rotating assembly is balanced to maintain reliability.
