Chevy LS2 Flat top -2.7cc All std 15 deg/ L92 4.080 bore, 4.125 stroke, 6.125 rod 11.8 to 1 Comp with 68cc head (CP Bullets BLS1132-080)
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|
Make |
Chevrolet |
|
Engine Type |
LS Series |
|
Part Number |
BLS1132-080 |
|
Bore (in) |
4.08 |
|
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 |
431 |
|
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 4.080 bore, 4.125 stroke, 6.125 rod 11.8 to 1 Comp with 68cc head (CP Bullets BLS1132-080) |
|---|---|
| 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 and stroke for the BLS1132-080 pistons?
The BLS1132-080 pistons are designed for a bore of 4.080 inches and a stroke of 4.125 inches, making them suitable for a 431 cubic inch LS engine configuration.
What compression ratio can I expect with the BLS1132-080 pistons?
These pistons provide a compression ratio of 11.8:1 when used with 68cc cylinder heads, which is ideal for performance applications requiring higher compression.
Do the BLS1132-080 pistons require any specific machining?
Yes, ensure that the piston-to-bore clearance is set correctly, and verify the ring gaps according to your specific engine build. Proper machining will ensure optimal performance and reliability.
What is the weight of the BLS1132-080 pistons, and how does it affect performance?
The BLS1132-080 pistons weigh 450 grams each. Lighter pistons can improve engine response and reduce reciprocating mass, but ensure your engine is balanced accordingly.
What type of valve reliefs do the BLS1132-080 pistons have?
The BLS1132-080 pistons feature two valve reliefs, which are designed to accommodate standard LS valve sizes and help prevent piston-to-valve contact in high-performance applications.
