VALVE SPRINGS
- SMALL- BLOCK V8 AND V6 90 DEG QUICK REFERENCE CHART
|
| Part
Number |
Description
|
Pressure
at Outside Diameter |
Installed
Height |
Solid
Height |
Average
Rate Pounds per inch |
Retainer
Part Number |
Valve
SealKit |
Notes
|
| 3911068 |
Single w/ damper |
1.241" |
80# @ 1.70" |
1.15" |
267 |
14003715 |
10132715 |
Production spring used with special high-performance 350ci, 300
HP (SP) engine. |
| 3927142 |
Single w/ damper |
1.273" |
110# @ 1.70" |
1.16 |
358 |
14003974 |
10132715 |
Use with camshaft #3927140 and all high-performance production
cams to extend rpm range
|
| 10134358 |
Single w/ damper |
1.273" |
110# @ 1.70" |
1.16" |
356 |
14003974 |
10132715 |
Chrome silicon steel; used with 10185086 aluminum head assembly.
Orange color code. |
| 330585 |
Dual |
1.379" |
140# @ 1.75" |
1.15" |
325 |
330586 |
10132715 |
Use with camshaft #3927140, 3965754 and all moderate lift racing
cams. |
| 366282 |
Dual w/ damper |
1.525" |
128# @ 1.70" |
1.26" |
406 |
366254 |
After-market |
Use with high-lift mushroom or roller tappet racing cams (.625"
lift). |
| 10206040 |
Single spring |
1.30" |
85# @ 1.78" |
1.26" |
373 |
10168424 |
NA |
1962-93 LT1 production Corvette engine. |
| 12551483 |
single spring |
1.32" |
101# @ 1.78" |
1.22" |
332 |
10212808 |
NA |
1996 LT4 Corvette and ZZ4 engines. |
