15º LS1
Featuring our traditional style full round skirt, these pistons are designed for the stock rod (.945" dia.wrist pin) or aftermarket/small block chevy (.927" dia. wrist pin) connecting rods. Flat top design achieves compression ratios suitable for normally aspirated applications (CR calculated with .057" gasket thickness and +.010" deck clearance). Pistons are machined for 1.5, 1.5, 3mm rings.
Includes:
927-2500-15-51S (118g) wrist pins included, note C
945-2500-15-51S (130g) wrist pins included, note K
Double spiro locks included, #927-042-CS
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LS1 Series
Std Bore: 3.900
Ring package designed for: 1.5, 1.5, 3MM Rings
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| Part # |
CID |
Bore |
Stroke |
Rod
Lgth. |
Block
Ht. |
Comp.
Ht. |
| Head Cubic Centimeters |
| 64cc |
66cc |
72cc |
| Compression Ratio |
|
Dome
Vol. |
Gram
Wt. |
Footnote |
Oversize |
Recom.
Ring Set |
 |
| 194881 |
383 |
3.905 |
4.000 |
6.200 |
9.250 |
1.050 |
11.5 |
11.3 |
10.5 |
-2.0 |
390 |
B,C |
0.005 |
J68008-3900-3 |
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| 194882 |
373 |
3.905 |
3.900 |
6.125 |
9.250 |
1.175 |
11.3 |
11.0 |
10.3 |
-2.0 |
410 |
C, M |
0.005 |
J68008-3900-3 |
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| 194883 |
347 |
3.905 |
3.622 |
6.125 |
9.251 |
1.315 |
10.6 |
10.3 |
9.6 |
-2.0 |
428 |
C |
0.005 |
J68008-3900-3 |
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| 194884 |
347 |
3.905 |
3.622 |
6.098 |
9.249 |
1.340 |
10.6 |
10.3 |
9.6 |
-2.0 |
434 |
K |
0.005 |
J68008-3900-3 |
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Tech and Installation Tips
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Valve Relief Diagram
- Denotes part # has been issued a new part #. A list referencing old part #s to their new counterparts will be available shortly.