SBC, 350, Wissotta Spec, Flat top, 4.030 bore, 1.560 CH, 3.480 stroke, 5.700 Rod, -6.8cc (CP Bullets BC1021-030W)
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|
Make |
Chevrolet |
|
Engine Type |
Small Block Chevy Wissotta Spec |
|
Part Number |
BC1021-030W |
|
Bore (in) |
4.03 |
|
Stroke (in) |
3.48 |
|
Rod Length (in) |
5.7 |
|
Comp Height |
1.56 |
|
Head Type |
All 23 deg |
|
Head CC |
68 |
|
Dome / Dish Height |
FT |
|
Dom/Dish CC |
-6.9 |
|
Compression Ratio |
9.7 |
|
Pin |
.927 x 2.500 |
|
Ring Thickness |
1.5 x 1.5 x 3.0mm |
|
VR Depth |
-.310 / -.310 |
|
Cubic Inch |
355 |
|
Piston Weight |
452 |
|
Style |
FT |
|
Valve Reliefs |
2 VR's |
|
Gas Port |
No |
| Product Name | SBC, 350, Wissotta Spec, Flat top, 4.030 bore, 1.560 CH, 3.480 stroke, 5.700 Rod, -6.8cc (CP Bullets BC1021-030W) |
|---|---|
| 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 compression ratio for the BC1021-030W pistons?
The BC1021-030W pistons are designed to achieve a compression ratio of approximately 9.7:1 when used with a 68cc cylinder head. However, actual compression may vary based on the specific engine build and machining tolerances.
What are the pin specifications for the BC1021-030W pistons?
The BC1021-030W pistons feature a pin diameter of .927 inches and a pin length of 2.500 inches. Ensure your connecting rods are compatible with these pin dimensions for proper fitment.
Do the BC1021-030W pistons require any specific machining?
Yes, the BC1021-030W pistons may require precise bore clearance and ring gap settings as per the engine builder's specifications. It's crucial to check the fitment and clearances during assembly to ensure optimal performance.
What is the weight of the BC1021-030W pistons?
Each BC1021-030W piston weighs approximately 452 grams. This weight should be considered when balancing the rotating assembly for your engine build.
Are there any specific applications for the BC1021-030W pistons?
The BC1021-030W pistons are suitable for performance applications in Small Block Chevy engines, particularly those built to Wissotta specifications. They are designed for use in both racing and high-performance street applications, depending on the overall engine setup.
