Chevy 403ci LS L92/All 15° Bore 4.010 CH 1.110 Stroke 4.000 Rod 6.125 CR 10.5 Dish Head 68cc (CP Bullets BLSR1117-010)
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|
Make |
Chevrolet |
|
Engine Type |
LS Series |
|
Part Number |
BLSR1117-010 |
|
Bore (in) |
4.01 |
|
Stroke (in) |
4 |
|
Rod Length (in) |
6.125 |
|
Comp Height |
1.11 |
|
Head Type |
Std 15 deg/ L92 |
|
Head CC |
68 |
|
Dome / Dish Height |
-0.04 |
|
Dom/Dish CC |
-8 |
|
Compression Ratio |
10.5 |
|
Pin |
.927 x 2.250 |
|
Ring Thickness |
1.2 x 1.2 x 3.0mm |
|
VR Depth |
-.200 / SP |
|
Cubic Inch |
404 |
|
Piston Weight |
441 |
|
Style |
Dish |
|
Valve Reliefs |
2 VR's |
|
Gas Port |
Yes |
| Product Name | Chevy 403ci LS L92/All 15° Bore 4.010 CH 1.110 Stroke 4.000 Rod 6.125 CR 10.5 Dish Head 68cc (CP Bullets BLSR1117-010) |
|---|---|
| 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 compression ratio for the BLSR1117-010 pistons in an LS engine?
The BLSR1117-010 pistons are designed to achieve a compression ratio of 10.5:1 when used with standard 68cc L92 cylinder heads. Ensure that your engine's overall setup, including head gasket thickness and combustion chamber volume, is accounted for to achieve this ratio.
What are the specific machining requirements for the BLSR1117-010 pistons?
When installing the BLSR1117-010 pistons, it's crucial to ensure proper bore clearance and set the ring gaps according to your engine's specifications. Additionally, confirm that the piston pin bores are correctly sized and that the pistons are balanced with the full rotating assembly.
Can the BLSR1117-010 pistons be used with aftermarket rods?
Yes, the BLSR1117-010 pistons can be used with aftermarket rods, provided that the rod length is 6.125 inches and the pin size is compatible at .927 inches. Always verify that the overall assembly maintains correct clearances and fits within your engine's design parameters.
What is the weight of the BLSR1117-010 pistons, and how does it affect performance?
The BLSR1117-010 pistons weigh 441 grams each. While lighter pistons can improve engine response and reduce rotating mass, ensure that your engine's balance and overall assembly are optimised to handle the weight for reliable performance.
What type of valve reliefs do the BLSR1117-010 pistons have?
The BLSR1117-010 pistons feature two valve reliefs, which are designed to accommodate standard LS valve sizes. Ensure that your camshaft and valve train setup does not exceed the clearance provided by these reliefs to avoid interference.
