Chevrolet SBC 305 Sprint, Flat Top 316, Bore 3.796, CH 1.550, Stroke 3.5, Rod 5.700 (CP Pistons S2061)
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|
Make |
Chevrolet |
|
Engine Type |
SBC 305 Sprint, Flat Top |
|
Part Number |
S2061 |
|
Bore (in) |
3.796 |
|
Stroke (in) |
3.5 |
|
Rod Length (in) |
5.7 |
|
Comp Height |
1.55 |
|
Dome / Dish Height |
F.T |
|
Dom/Dish CC |
-3.1 |
|
Pin |
.927 x 2.500 |
|
Ring Thickness |
1.2 x 1.5 x 3.0mm |
|
VR Depth Int/Exh |
-.250 / SP |
|
Piston Weight |
415 |
|
Gas Port |
Yes |
|
Capacity |
317 |
|
Shlef (RPO) or Made to Order (MTO) |
MTO |
Lightweight design; Designed for shorter wrist pins; Chamfered pins and wire locks included; Gas ports and cp grooves included; Accumulator grooves included; Light weight Metric Ring pack. Notes: D - Rail Support included, G - Supplied with Wire Locks.
| Product Name | Chevrolet SBC 305 Sprint, Flat Top 316, Bore 3.796, CH 1.550, Stroke 3.5, Rod 5.700 (CP Pistons S2061) |
|---|---|
| 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 S2061 pistons?
For the S2061 pistons, a typical bore clearance is around 0.0030" to 0.0035". However, this can vary based on your specific application and operating conditions, so it's crucial to consult with your engine builder for precise measurements.
What type of ring pack is used with the S2061 pistons?
The S2061 pistons utilise a lightweight metric ring pack with thicknesses of 1.2mm, 1.5mm, and 3.0mm. Ensure that the ring gaps are set according to your engine's specifications and intended use.
Do the S2061 pistons require any special machining?
Yes, the S2061 pistons may require specific machining, particularly for the pin bores and ring grooves. It's essential to ensure that your engine's bore is properly honed and that the piston-to-wall clearance is within the recommended range for optimal performance.
What is the weight of the S2061 pistons, and how does it affect engine performance?
The S2061 pistons weigh 415 grams each. Their lightweight design helps reduce reciprocating mass, which can improve engine response and RPM potential. However, always consider the overall balance of the rotating assembly when making performance modifications.
What is the significance of the gas ports in the S2061 pistons?
The gas ports in the S2061 pistons are designed to improve ring seal and reduce blow-by by allowing combustion gases to pressurise the ring pack. This feature is particularly beneficial in high-performance applications where maintaining cylinder pressure is critical.
