Chevrolet BBC 11°, 12°, 14° Flat Top - Normally Aspirated BBC, Bore 4.610, CH 1.120, Custom Stroke, Custom Rod (CP Pistons SS5513)
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|
Make |
Chevrolet |
|
Engine Type |
BBC 11˚ , 12˚, 14˚ Flat Top - Normally Aspirated |
|
Part Number |
SS5513 |
|
Bore (in) |
4.61 |
|
Stroke (in) |
Varies |
|
Rod Length (in) |
Varies |
|
Comp Height |
1.12 |
|
Dome / Dish Height |
F.T |
|
Dom/Dish CC |
-7.8 |
|
Pin |
.990 x 2.750 |
|
Ring Thickness |
.043 x .043 x 3.0mm |
|
VR Depth Int/Exh |
-.285 / -.085 |
|
Piston Weight |
560 |
|
Gas Port |
Yes |
|
Capacity |
Varies |
|
Shlef (RPO) or Made to Order (MTO) |
MTO |
Flat Top forging for shallow valve angles; Wrist pins and pin-fitting included at no cost; Radius valve relief; Double pin oilers, force fed from oil ring; Balanced to +/- 1 gram; Pick lock grooves for easy lock removal; Suitable for angle milled heads; Fully CNC machined. Notes: B – Supplied with Double Spiral Locks, D – Rail Support included , T – Supplied with .180 Wall (142g), or optional 165g.
| Product Name | Chevrolet BBC 11°, 12°, 14° Flat Top - Normally Aspirated BBC, Bore 4.610, CH 1.120, Custom Stroke, Custom Rod (CP Pistons SS5513) |
|---|---|
| Brands | CP Carrillo |
| Engine | Big Block 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 compression ratio can I expect with the SS5513 pistons in my Big Block Chev?
The compression ratio will depend on your specific cylinder head design, combustion chamber volume, and the stroke of your engine. The flat top design is suitable for normally aspirated applications, and you should calculate the compression ratio based on your engine's configuration.
What is the recommended bore clearance for the SS5513 pistons?
For the SS5513 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.
Do I need to modify my cylinder heads to use the SS5513 pistons?
The SS5513 pistons are designed for shallow valve angles and feature radius valve reliefs, making them compatible with angle milled heads. However, you should verify that your specific head design accommodates the piston configuration to avoid any clearance issues.
What type of wrist pins are included with the SS5513 pistons?
The SS5513 pistons come with .990 x 2.750 wrist pins included at no additional cost. Ensure that your conrods are compatible with these pin dimensions.
How do I ensure proper fitment of the SS5513 pistons in my engine?
Proper fitment of the SS5513 pistons requires careful attention to machining and clearances. Ensure that your cylinder bores are honed to the correct size, and verify that the ring gaps are set according to your specific engine setup. Always consult with an experienced engine builder for best practices.
