Chevrolet BBC Flat Top 11°, 12°, 14° N20 BBC, Bore 4.610, CH 1.140, Custom Stroke, Custom Rod (CP Pistons SS5512)
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|
Make |
Chevrolet |
|
Engine Type |
BBC Flat Top 11˚ , 12˚, 14˚ N20 |
|
Part Number |
SS5512 |
|
Bore (in) |
4.61 |
|
Stroke (in) |
Varies |
|
Rod Length (in) |
Varies |
|
Comp Height |
1.14 |
|
Dome / Dish Height |
F.T |
|
Dom/Dish CC |
-7.8 |
|
Pin |
.990 x 2.930 |
|
Ring Thickness |
.043 x .043 x 3/16 in. |
|
VR Depth Int/Exh |
-.285 / -.085 |
|
Piston Weight |
598 |
|
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 Flat Top 11°, 12°, 14° N20 BBC, Bore 4.610, CH 1.140, Custom Stroke, Custom Rod (CP Pistons SS5512) |
|---|---|
| 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 is the recommended bore size for the SS5512 pistons?
The SS5512 pistons are designed for a bore size of 4.610 inches. Ensure that your engine's cylinder bore is machined to this specification for optimal fit and performance.
What is the compression height of the SS5512 pistons?
The SS5512 pistons have a compression height of 1.140 inches. This is crucial for achieving the desired compression ratio in your Big Block Chev engine.
What type of valve reliefs do the SS5512 pistons feature?
The SS5512 pistons come with radius valve reliefs, which are designed to accommodate shallow valve angles. This feature helps prevent valve-to-piston contact in high-performance applications.
What is the weight of the SS5512 pistons?
Each SS5512 piston weighs 598 grams. It's important to consider this weight when balancing your rotating assembly to ensure smooth operation at high RPMs.
Are the SS5512 pistons suitable for use with angle milled heads?
Yes, the SS5512 pistons are suitable for use with angle milled heads. Their design accommodates the changes in geometry that come with milling, making them a versatile choice for performance builds.
