Chevrolet BBC 11°, 12°, 14° Flat Top - Normally Aspirated BBC, Bore 4.625, CH 1.120, Custom Stroke, Custom Rod (CP Pistons SS5515)
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|
Make |
Chevrolet |
|
Engine Type |
BBC 11˚ , 12˚, 14˚ Flat Top - Normally Aspirated |
|
Part Number |
SS5515 |
|
Bore (in) |
4.625 |
|
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 |
578 |
|
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 4.625, CH 1.120, Custom Stroke, Custom Rod (CP Pistons SS5515) |
|---|---|
| Brands | CP Carrillo |
| Engine | Big Block Chev |
| Make | GM |
Delivery & Freight
We are an Australian-based company that ships items nationally and internationally, usually within 48 hours of receiving your order. High-value items shipped internationally are sent via DHL Express, while lower-value items are sent via Australia Post Express unless otherwise instructed.
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Product images are for description purposes only. Actual product may vary.
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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 and compression height for the SS5515 pistons?
The SS5515 pistons are designed for a bore of 4.625 inches and have a compression height of 1.120 inches. Ensure these specifications match your engine setup for optimal performance.
What type of valve reliefs do the SS5515 pistons feature?
The SS5515 pistons come with radius valve reliefs, which are suitable for shallow valve angles. This design helps accommodate various camshaft profiles while maintaining piston strength.
What is the weight of the SS5515 pistons, and how does it affect engine balance?
Each SS5515 piston weighs 578 grams. It's crucial to balance these pistons with the full rotating assembly to ensure smooth operation and reduce vibrations at high RPMs.
Are the SS5515 pistons suitable for high-performance applications?
Yes, the SS5515 pistons are designed for normally aspirated Big Block Chev engines and are suitable for high-performance applications. However, ensure proper machining, clearances, and tuning to maximise reliability and performance.
What type of locks and oiling features do the SS5515 pistons include?
The SS5515 pistons are supplied with double spiral locks and feature double pin oilers that are force-fed from the oil ring, enhancing lubrication and reducing wear during operation.
