Description
Contains 16 Individual Pieces: 5/16"-11/32"-3/8" Stems Adds +0.075" height. All valve spring retainers are machined from 4140 chromoly steel and then hardened for extra strength. They are then black oxide coated for rust protection.
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| Valve stem size | Dimension | Part Number |
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| A | B | C | ||||
| 7° Lock angle | ||||||
| 8mm (0.314") | 1.375" | - | - | 1278 | ||
| 11/32" | 1.375" | 1.035" | 0.700" | 1201 | ||
| 11/32" | 1.375" | 1.060" | 0.700" | 1202* | ||
| 11/32" | 1.370" | 1.065" | 0.700" | 1203 | ||
| 11/32" | 1.370" | 1.060" | 0.700" | 1205 | ||
| 3/8" | 1.375" | 1.025" | 0.700" | 1252** | ||
| 3/8" | 1.375" | 1.060" | 0.700" | 1254 | ||
| 3/8" | 1.375" | 1.130" | 0.730" | 1256*** | ||
| 3/8" | 1.375" | 1.130" | 0.730" | 1258 | ||
| * Same as Edelbrock OEM ** Generally Used w/Double Spring *** Used with Single Spring |
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| 10° Lock angle (For use with Jumbo style locks only) | ||||||
| 5/16", 11/32", 3/8" | 1.400" | 1.050" | 0.690" | 1270 | ||
| 5/16", 11/32", 3/8" | 1.500" | 1.095" | 0.710" | 1272 | ||
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