Chevy LS2 Flat top -2.7cc All std 15 deg/ L92 4.075 bore, 4.125 stroke, 6.125 rod 11.8 to 1 Comp with 68cc head (CP Bullets BLS1132-075)
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|
Make |
Chevrolet |
|
Engine Type |
LS Series |
|
Part Number |
BLS1132-075 |
|
Bore (in) |
4.075 |
|
Stroke (in) |
4.125 |
|
Rod Length (in) |
6.125 |
|
Comp Height |
1.05 |
|
Head Type |
Std 15 deg/ L92 |
|
Head CC |
68 |
|
Dome / Dish Height |
FT |
|
Dom/Dish CC |
-2.7 |
|
Compression Ratio |
11.8 |
|
Pin |
.927 x 2.250 |
|
Ring Thickness |
1.5 x 1.5 x 3.0mm |
|
VR Depth |
-.175 / SP |
|
Cubic Inch |
430 |
|
Piston Weight |
450 |
|
Style |
FT |
|
Valve Reliefs |
2 VR's |
|
Gas Port |
No |
| Product Name | Chevy LS2 Flat top -2.7cc All std 15 deg/ L92 4.075 bore, 4.125 stroke, 6.125 rod 11.8 to 1 Comp with 68cc head (CP Bullets BLS1132-075) |
|---|---|
| Brands | CP Carrillo |
| Engine | GM / LS |
| Make | Chevrolet, GM, Holden, LS Chev |
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 and stroke for the BLS1132-075 pistons?
The BLS1132-075 pistons are designed for a 4.075 inch bore and a 4.125 inch stroke, making them suitable for a 430 cubic inch LS engine.
What compression ratio can I expect with these pistons and a 68cc head?
When using the BLS1132-075 pistons with a 68cc head, you can achieve a compression ratio of approximately 11.8:1. Ensure that your engine is properly tuned to handle this compression.
What are the specific ring thicknesses for the BLS1132-075 pistons?
The BLS1132-075 pistons come with a ring thickness of 1.5mm for both the top and second rings, and a 3.0mm thickness for the oil control ring.
What is the weight of the BLS1132-075 pistons?
Each BLS1132-075 piston weighs 450 grams. This weight is important to consider for balancing the rotating assembly.
Do the BLS1132-075 pistons have valve reliefs?
Yes, the BLS1132-075 pistons feature two valve reliefs, which are necessary for clearance with the LS engine's valves during operation.
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