Big Block Chevy 566ci 4.605 Bore 1.120 CH 14:1 CR (CP Bullets BBCRE5320-105)
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|
Make |
Chevrolet |
|
Engine Type |
Big Block |
|
Part Number |
BBCRE5320-105 |
|
Bore (in) |
4.605 |
|
Stroke (in) |
4.25 |
|
Rod Length (in) |
6.535 |
|
Comp Height |
1.12 |
|
Head Type |
BB3 Xtra / Head Hunter |
|
Head CC |
118 |
|
Dome / Dish Height |
0.65 |
|
Dom/Dish CC |
46.9 |
|
Compression Ratio |
14.1 |
|
Pin |
.990 x 2.750 |
|
Ring Thickness |
.043 x .043 x 3.0 |
|
VR Depth |
-.310 / .100 |
|
Cubic Inch |
566 |
|
Piston Weight |
674 |
|
Style |
Dome |
|
Valve Reliefs |
2 VR's |
|
Gas Port |
Yes |
| Product Name | Big Block Chevy 566ci 4.605 Bore 1.120 CH 14:1 CR (CP Bullets BBCRE5320-105) |
|---|---|
| Brands | CP Carrillo |
| Engine | Big Block 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 BBCRE5320-105 pistons?
For the BBCRE5320-105 pistons, a typical bore clearance of 0.0030" to 0.0040" is recommended. This allows for thermal expansion while ensuring a proper fit. Always consult your engine builder for specific requirements based on your application.
What type of fuel is suitable for the 14:1 compression ratio of these pistons?
With a 14:1 compression ratio, these pistons are best suited for high-octane racing fuel or a suitable ethanol blend. Ensure your engine is properly tuned to handle the increased compression to avoid detonation.
What machining processes are necessary for installing these pistons?
Before installation, ensure the cylinder bores are honed to the correct size and finish for the BBCRE5320-105 pistons. Additionally, check that the ring grooves are clean and free of debris, and that the piston pin fitment is correct.
What is the significance of the gas ports in these pistons?
The gas ports in the BBCRE5320-105 pistons help improve ring seal and reduce blow-by by allowing combustion gases to pressurise the ring area. This is particularly beneficial in high-performance applications where maintaining cylinder pressure is critical.
What should I consider regarding piston weight for my build?
The BBCRE5320-105 pistons weigh 674 grams. When building your engine, consider the overall rotating assembly weight, as it affects engine balance and RPM capabilities. Ensure your connecting rods and crankshaft are compatible with this piston weight for optimal performance.
