Chevy LS1 Flat top -4.1cc All std 15 deg/ L92 3.905 bore, 3.622 stroke, 6.125 rod 9.3 to 1 Comp with 70cc head (CP Bullets BLS1001-007)
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|
Make |
Chevrolet |
|
Engine Type |
LS Series |
|
Part Number |
BLS1001-007 |
|
Bore (in) |
3.905 |
|
Stroke (in) |
3.622 |
|
Rod Length (in) |
6.125 |
|
Comp Height |
1.3 |
|
Head Type |
Std 15 deg/ L92 |
|
Head CC |
70 |
|
Dome / Dish Height |
FT |
|
Dom/Dish CC |
-3.63 |
|
Compression Ratio |
9.3 |
|
Pin |
.927 x 2.250 |
|
Ring Thickness |
1.5 x 1.5 x 3.0mm |
|
VR Depth |
-.200 / SP |
|
Cubic Inch |
347 |
|
Piston Weight |
420 |
|
Style |
FT |
|
Valve Reliefs |
2 VR's |
|
Gas Port |
No |
| Product Name | Chevy LS1 Flat top -4.1cc All std 15 deg/ L92 3.905 bore, 3.622 stroke, 6.125 rod 9.3 to 1 Comp with 70cc head (CP Bullets BLS1001-007) |
|---|---|
| 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 size for the BLS1001-007 pistons?
The BLS1001-007 pistons are designed for a bore size of 3.905 inches. Ensure your engine's bore is machined to this specification for optimal fit and performance.
What compression ratio can I expect with the BLS1001-007 pistons?
These pistons provide a compression ratio of 9.3:1 when used with a 70cc head. Keep in mind that actual compression may vary based on factors like head gasket thickness and machining tolerances.
What is the weight of the BLS1001-007 pistons?
The BLS1001-007 pistons weigh 420 grams each. This weight is important for maintaining balance in your rotating assembly, so consider it during your engine build.
Do the BLS1001-007 pistons have valve reliefs?
Yes, the BLS1001-007 pistons feature two valve reliefs. This design helps accommodate larger camshaft profiles while preventing valve-to-piston contact.
What ring thickness is compatible with the BLS1001-007 pistons?
The BLS1001-007 pistons are compatible with 1.5mm x 1.5mm x 3.0mm ring sets. Ensure you select rings that match these dimensions for proper sealing and performance.
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