Chevrolet SB 2.2 Flat Top 435, Bore 4.165, CH 1.000, Stroke 4.000, Rod 6.000 - Lefts & Rights (CP Pistons S2505)
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|
Make |
Chevrolet |
|
Engine Type |
SB2.2 Flat Top |
|
Part Number |
S2505 |
|
Bore (in) |
4.165 |
|
Stroke (in) |
4 |
|
Rod Length (in) |
6 |
|
Comp Height |
1 |
|
Dome / Dish Height |
F.T |
|
Dom/Dish CC |
-6.2 |
|
Pin |
.927 x 2.750 |
|
Ring Thickness |
.043 x .043 x 3.0mm |
|
VR Depth Int/Exh |
-.275 / -.080 |
|
Piston Weight |
425 |
|
Gas Port |
Yes |
|
Capacity |
436 |
|
Shlef (RPO) or Made to Order (MTO) |
MTO |
Dedicated right and left forgings; Pin-fitting included at no cost; Chamfered pins and wire locks included; Accumulator and anti-detonation grooves included; Double pin oilers, force fed from oil ring; Radius valve reliefs; Domes may be cut to a flat top ; Balanced to +/- 1 gram; Pick lock grooves for easy lock removal; designed for back-cut rings; Custom skirt cam and barrel shapes; Fully CNC Machined. Notes: D – Rail Support included, G – Supplied with Wire Locks.
| Product Name | Chevrolet SB 2.2 Flat Top 435, Bore 4.165, CH 1.000, Stroke 4.000, Rod 6.000 - Lefts & Rights (CP Pistons S2505) |
|---|---|
| Brands | CP Carrillo |
| Engine | Chev |
| 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 S2505 pistons?
The recommended bore clearance for the S2505 pistons should be determined based on your specific engine build and intended use. A typical clearance range for performance applications is around 0.0030" to 0.0040". Always consult with your engine builder for precise specifications.
What type of fuel is suitable for engines using the S2505 pistons?
The S2505 pistons are designed for high-performance applications, and as such, they perform best with high-octane fuel. Ensure your fuel quality matches the compression ratio and tuning of your engine to prevent detonation.
Do I need to modify the valve reliefs on the S2505 pistons?
The S2505 pistons come with radius valve reliefs designed for typical applications. However, if you are using high-lift camshafts or specific cylinder head configurations, you may need to check clearance and modify the reliefs accordingly.
What is the weight of the S2505 pistons and how does it affect performance?
The S2505 pistons weigh 425 grams each. Lighter pistons can improve throttle response and reduce reciprocating mass, but it's essential to balance them with the rest of the rotating assembly to maintain engine reliability.
Are the S2505 pistons suitable for boosted applications?
Yes, the S2505 pistons can be used in boosted applications. They feature gas ports and anti-detonation grooves, which help manage combustion pressures. However, ensure your engine is properly tuned and built to handle the additional boost levels.
