Chevrolet SBC 305 Sprint, Flat Top 311, Bore 3.766, CH 1.550, Stroke 3.500, Rod 5.700 (CP Pistons S2031)
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|
Make |
Chevrolet |
|
Engine Type |
SBC 305 Sprint, Flat Top |
|
Part Number |
S2031 |
|
Bore (in) |
3.766 |
|
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 |
1.5 x 1.5 x 4.0mm |
|
VR Depth Int/Exh |
-.250 / SP |
|
Piston Weight |
405 |
|
Gas Port |
Yes |
|
Capacity |
312 |
|
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 311, Bore 3.766, CH 1.550, Stroke 3.500, Rod 5.700 (CP Pistons S2031) |
|---|---|
| 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 bore clearance for the S2031 pistons?
For the S2031 pistons, a typical bore clearance of 0.0030" to 0.0035" is recommended. However, final clearance should be determined by the engine builder based on the specific application and operating conditions.
What type of ring pack is included with the S2031 pistons?
The S2031 pistons come with a lightweight metric ring pack consisting of 1.5mm x 1.5mm x 4.0mm rings. Ensure proper installation and gap settings for optimal performance.
Are gas ports included in the design of the S2031 pistons?
Yes, the S2031 pistons feature gas ports, which help improve ring seal and performance under high-load conditions. Proper tuning and setup are essential to maximise their benefits.
What is the piston weight of the S2031 pistons?
The S2031 pistons weigh 405 grams each. This lightweight design contributes to reduced reciprocating mass, which can enhance engine responsiveness.
What is the expected delivery time for the S2031 pistons?
The S2031 pistons are made to order, so please allow 6-8 weeks for delivery. Plan your build schedule accordingly to accommodate this lead time.
