Chevy LS2 Flat top -2.7cc All std 15 deg/ L92 4.075 bore, 3.622 stroke, 6.125 rod 10.5 to 1 Comp with 68cc head (CP Bullets BLS1135-075)
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|
Make |
Chevrolet |
|
Engine Type |
LS Series |
|
Part Number |
BLS1135-075 |
|
Bore (in) |
4.075 |
|
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 |
10.4 |
|
Pin |
.927 x 2.250 |
|
Ring Thickness |
1.5 x 1.5 x 3.0mm |
|
VR Depth |
-.175 / SP |
|
Cubic Inch |
378 |
|
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 4.075 bore, 3.622 stroke, 6.125 rod 10.5 to 1 Comp with 68cc head (CP Bullets BLS1135-075) |
|---|---|
| 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 BLS1135-075 pistons?
The BLS1135-075 pistons are designed for a bore of 4.075 inches and a stroke of 3.622 inches, making them suitable for LS engines with these specifications.
What compression ratio can I expect with the BLS1135-075 pistons and a 68cc head?
With a 68cc head, the BLS1135-075 pistons will yield a compression ratio of approximately 10.4:1. However, actual compression may vary based on factors such as head gasket thickness and combustion chamber modifications.
What are the pin specifications for the BLS1135-075 pistons?
The BLS1135-075 pistons use a pin size of .927 inches with a length of 2.250 inches. Ensure compatibility with your connecting rods when selecting these pistons.
What is the weight of the BLS1135-075 pistons, and how does it affect performance?
Each BLS1135-075 piston weighs 479 grams. Lighter pistons can improve engine response and reduce reciprocating mass, but ensure your engine is balanced accordingly to maintain reliability.
Do the BLS1135-075 pistons require any specific machining before installation?
Yes, the BLS1135-075 pistons may require careful attention to bore clearance and ring gap settings, which should be determined by the engine builder based on the specific application and intended use.
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