Chevy LS2 Flat top -2.7cc All std 15 deg/ L92 4.070 bore, 3.622 stroke, 6.125 rod 10.4 to 1 Comp with 68cc head (CP Bullets BLS1135-070)
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|
Make |
Chevrolet |
|
Engine Type |
LS Series |
|
Part Number |
BLS1135-070 |
|
Bore (in) |
4.07 |
|
Stroke (in) |
3.622 |
|
Rod Length (in) |
6.125 |
|
Comp Height |
1.3 |
|
Head Type |
Std 15 deg/ L92 |
|
Head CC |
68 |
|
Dome / Dish Height |
FT |
|
Dom/Dish CC |
-2.7 |
|
Compression Ratio |
10.3 |
|
Pin |
.927 x 2.250 |
|
Ring Thickness |
1.5 x 1.5 x 3.0mm |
|
VR Depth |
-.175 / SP |
|
Cubic Inch |
377 |
|
Piston Weight |
479 |
|
Style |
FT |
|
Valve Reliefs |
2 VR's |
|
Gas Port |
No |
| Product Name | Chevy LS2 Flat top -2.7cc All std 15 deg/ L92 4.070 bore, 3.622 stroke, 6.125 rod 10.4 to 1 Comp with 68cc head (CP Bullets BLS1135-070) |
|---|---|
| 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 BLS1135-070 pistons?
The BLS1135-070 pistons are designed for a 4.070 inch bore and a 3.622 inch stroke, making them suitable for a 377 cubic inch LS engine.
What compression ratio can I expect with the BLS1135-070 pistons and 68cc heads?
When using the BLS1135-070 pistons with 68cc heads, you can achieve a compression ratio of approximately 10.4 to 1, depending on the specific engine assembly and clearances.
What is the pin size and weight of the BLS1135-070 pistons?
The BLS1135-070 pistons feature a pin size of .927 x 2.250 inches and weigh approximately 479 grams each.
Do the BLS1135-070 pistons come with valve reliefs?
Yes, the BLS1135-070 pistons are designed with two valve reliefs to accommodate LS engine configurations.
What type of ring thickness is compatible with the BLS1135-070 pistons?
The BLS1135-070 pistons are compatible with 1.5 x 1.5 x 3.0mm ring thickness, which is standard for performance applications in LS engines.
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