Chevrolet SB 2.2 Flat Top 427, Bore 4.125, CH 1.000, Stroke 4.000, Rod 6.000 - Lefts & Rights (CP Pistons S2500)
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|
Make |
Chevrolet |
|
Engine Type |
SB2.2 Flat Top |
|
Part Number |
S2500 |
|
Bore (in) |
4.125 |
|
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 |
411 |
|
Gas Port |
Yes |
|
Capacity |
428 |
|
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 427, Bore 4.125, CH 1.000, Stroke 4.000, Rod 6.000 - Lefts & Rights (CP Pistons S2500) |
|---|---|
| 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 S2500 pistons?
The recommended bore clearance for the S2500 pistons should be determined by the engine builder based on the specific application and intended use. Typically, a clearance of 0.0035" to 0.0045" is common for performance applications, but always consult your engine specifications and consider factors like thermal expansion.
What type of ring gaps should I use with the S2500 pistons?
Ring gaps for the S2500 pistons should be set according to the intended use of the engine. For naturally aspirated applications, a typical gap is around 0.020" to 0.022" for the top ring and slightly larger for the second ring. Boosted applications may require wider gaps to accommodate increased cylinder pressures.
Do the S2500 pistons require any special machining?
Yes, the S2500 pistons may require specific machining such as honing of the bore to ensure proper fitment and clearance. Additionally, ensure that the valve reliefs are compatible with your cylinder head configuration, and check that the piston-to-valve clearance is adequate.
What is the weight of the S2500 pistons, and how does it affect engine performance?
The S2500 pistons weigh 411 grams each. Lighter pistons can improve engine response and reduce reciprocating mass, which may enhance performance. However, ensure that the overall rotating assembly is balanced to maintain reliability and performance.
Are the S2500 pistons suitable for high boost applications?
The S2500 pistons are designed for performance and can handle high boost applications, but reliability will depend on proper tuning, fuel quality, and overall engine assembly. Ensure that the engine is built to handle the intended power levels and that all components are compatible.
