Chevy LS3 377ci AFR LS3 12° 4.070 bore 1.300 CH -3.8cc Flat Top (CP Bullets BLS1152-005)
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|
Make |
Chevrolet |
|
Engine Type |
LS Series |
|
Part Number |
BLS1152-005 |
|
Bore (in) |
4.07 |
|
Stroke (in) |
3.622 |
|
Rod Length (in) |
6.125 |
|
Comp Height |
1.3 |
|
Head Type |
AFR LS3 12 * |
|
Head CC |
68 |
|
Dome / Dish Height |
FT |
|
Dom/Dish CC |
-3.8 |
|
Compression Ratio |
10.3 |
|
Pin |
.927 x 2.250 |
|
Ring Thickness |
1.5 x 1.5 x 3.0mm |
|
VR Depth |
-.200 / SP |
|
Cubic Inch |
377 |
|
Piston Weight |
500 |
|
Style |
FT |
|
Valve Reliefs |
2 VR's |
|
Gas Port |
No |
| Product Name | Chevy LS3 377ci AFR LS3 12° 4.070 bore 1.300 CH -3.8cc Flat Top (CP Bullets BLS1152-005) |
|---|---|
| Brands | CP Carrillo |
| Engine | GM / LS |
| Make | Chevrolet, GM, Holden, LS Chev |
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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 BLS1152-005 pistons?
For the BLS1152-005 pistons, a typical bore clearance of 0.0030" to 0.0035" is recommended. However, this may vary based on your specific engine build and operating conditions, so always consult with your engine builder for precise measurements.
What compression ratio can I expect with the BLS1152-005 pistons and AFR LS3 12° heads?
Using the BLS1152-005 pistons with AFR LS3 12° heads that have a 68cc chamber will yield a compression ratio of approximately 10.3:1. Ensure that all components are compatible and that the engine is properly tuned for optimal performance.
What is the weight of the BLS1152-005 pistons and how does it affect performance?
The BLS1152-005 pistons weigh 500 grams each. Lighter pistons can improve engine response and reduce stress on the connecting rods, but it's essential to balance them with the rest of the rotating assembly for optimal performance.
Do the BLS1152-005 pistons require any special machining?
Yes, the BLS1152-005 pistons may require specific machining to ensure proper fitment in your engine. This includes checking bore size and potentially honing for correct clearance. Always consult with your engine builder for the best practices.
What type of rings are compatible with the BLS1152-005 pistons?
The BLS1152-005 pistons come with a ring thickness of 1.5 x 1.5 x 3.0mm. Ensure that you use compatible rings designed for these dimensions to maintain proper sealing and performance in your engine.
