Chevrolet SB 2.2 Flat Top 428, Bore 4.130, CH 1.000, Stroke 4.000, Rod 6.000 - Lefts & Rights (CP Pistons S2501)
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|
Make |
Chevrolet |
|
Engine Type |
SB2.2 Flat Top |
|
Part Number |
S2501 |
|
Bore (in) |
4.13 |
|
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 |
413 |
|
Gas Port |
Yes |
|
Capacity |
429 |
|
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 428, Bore 4.130, CH 1.000, Stroke 4.000, Rod 6.000 - Lefts & Rights (CP Pistons S2501) |
|---|---|
| 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 S2501 pistons?
For the S2501 pistons, a typical bore clearance of 0.0020" to 0.0025" is recommended. However, final clearance should be determined by the engine builder based on specific application and tolerances.
What type of ring gaps should I use with the S2501 pistons?
The ring gaps for the S2501 pistons should be set according to the intended use. For a performance application, a gap of 0.020" for the top ring and 0.022" for the second ring is a good starting point, but always verify with your specific engine setup.
Can the dome height of the S2501 pistons be modified?
Yes, the dome height of the S2501 pistons can be cut to a flat top if desired. This should be done with caution and only by a qualified machinist to maintain balance and structural integrity.
What is the weight of the S2501 pistons and how does it affect performance?
The S2501 pistons weigh 413 grams. Lighter pistons can improve engine response and reduce stress on the connecting rods, but ensure that the entire rotating assembly is balanced to maintain reliability.
What machining considerations should I keep in mind when using S2501 pistons?
When using S2501 pistons, ensure that the cylinder bores are honed to the correct specifications and that the piston pin bores are fitted properly. Additionally, check that the piston-to-valve clearance is adequate, especially with the included radius valve reliefs.
