Chevy LS2 Flat top -2.7cc All std 15 deg/ L92 4.030 bore, 4.125 stroke, 6.125 rod 11.5 to 1 Comp with 68cc head (CP Bullets BLS1132-030)
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|
Make |
Chevrolet |
|
Engine Type |
LS Series |
|
Part Number |
BLS1132-030 |
|
Bore (in) |
4.03 |
|
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 |
11.5 |
|
Pin |
.927 x 2.250 |
|
Ring Thickness |
1.5 x 1.5 x 3.0mm |
|
VR Depth |
-.175 / SP |
|
Cubic Inch |
421 |
|
Piston Weight |
448 |
|
Style |
FT |
|
Valve Reliefs |
2 VR's |
|
Gas Port |
No |
| Product Name | Chevy LS2 Flat top -2.7cc All std 15 deg/ L92 4.030 bore, 4.125 stroke, 6.125 rod 11.5 to 1 Comp with 68cc head (CP Bullets BLS1132-030) |
|---|---|
| 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 BLS1132-030 pistons?
The BLS1132-030 pistons are designed for a 4.030 inch bore and a 4.125 inch stroke. Ensure your engine is machined to these specifications for optimal performance.
What compression ratio can I expect with the BLS1132-030 pistons and 68cc heads?
With the BLS1132-030 pistons and 68cc heads, you can achieve a compression ratio of 11.5:1. This is suitable for performance applications, but ensure your fuel quality and tuning match this setup.
What is the pin size and weight of the BLS1132-030 pistons?
The BLS1132-030 pistons feature a pin size of .927 x 2.250 inches and weigh 448 grams each. Ensure your conrods are compatible with this pin size.
Do the BLS1132-030 pistons have valve reliefs?
Yes, the BLS1132-030 pistons come with two valve reliefs. This design helps accommodate larger camshaft profiles while preventing valve contact.
What ring thickness is used with the BLS1132-030 pistons?
The BLS1132-030 pistons use a ring thickness of 1.5 x 1.5 x 3.0mm. Ensure your cylinder bore is properly prepared for these rings to achieve the best seal.
