Chevy LS2 AFR LS3 12° -3.8cc Flat Top 4.005 bore 1.110 CH 4.000 stroke 6.125 rod with 68cc head (CP Bullets BLS1151-005)
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|
Make |
Chevrolet |
|
Engine Type |
LS Series |
|
Part Number |
BLS1151-005 |
|
Bore (in) |
4.005 |
|
Stroke (in) |
4 |
|
Rod Length (in) |
6.125 |
|
Comp Height |
1.11 |
|
Head Type |
AFR LS3 12 * |
|
Head CC |
68 |
|
Dome / Dish Height |
FT |
|
Dom/Dish CC |
-3.8 |
|
Compression Ratio |
11.1 |
|
Pin |
.927 x 2.250 |
|
Ring Thickness |
1.5 x 1.5 x 3.0mm |
|
VR Depth |
-.200 / SP |
|
Cubic Inch |
403 |
|
Piston Weight |
449 |
|
Style |
FT |
|
Valve Reliefs |
2 VR's |
|
Gas Port |
No |
| Product Name | Chevy LS2 AFR LS3 12° -3.8cc Flat Top 4.005 bore 1.110 CH 4.000 stroke 6.125 rod with 68cc head (CP Bullets BLS1151-005) |
|---|---|
| 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 BLS1151-005 pistons?
For the BLS1151-005 pistons, a typical bore clearance of 0.0020" to 0.0025" is recommended. However, final clearance should be determined based on your specific engine build and intended use.
What compression ratio can I expect with the BLS1151-005 pistons and 68cc AFR LS3 heads?
Using the BLS1151-005 pistons with 68cc AFR LS3 heads will yield a compression ratio of approximately 11.1:1. Ensure that your engine's overall setup, including fuel quality and tuning, can support this compression.
Do I need to modify the BLS1151-005 pistons for valve clearance?
The BLS1151-005 pistons come with two valve reliefs designed for LS applications. However, it's essential to check valve clearance during assembly, especially if using aftermarket camshafts or heads that may alter the geometry.
What is the weight of the BLS1151-005 pistons and how does it affect performance?
The BLS1151-005 pistons weigh 449 grams each. While lighter pistons can improve engine response and reduce reciprocating mass, ensure that your rotating assembly is balanced properly to maintain reliability.
What type of rings are compatible with the BLS1151-005 pistons?
The BLS1151-005 pistons are designed for 1.5mm x 1.5mm x 3.0mm ring sets. Ensure that the rings are properly gapped and installed according to your engine's specifications for optimal performance.
