New
Normal
Strong top end performance
Aggressive idle
Works best with ported heads and CAI/OTR
Suits cathedral or rectangular heads
Requires stall converter
See fitting notes
Also available to purchase with a spring kit
Click here for parts to suit LS1
Click here for parts to suit LS2
Click here for parts to suit LS3/L98
Click here for parts to suit L76/L77
| RPM Range | Part No. | Duration | with 1.7 Rocker | Lobe Sep Angle |
Lash
Measured Hot |
|||||
|---|---|---|---|---|---|---|---|---|---|---|
| Advertised | @.050” | |||||||||
| IN | EX | IN | EX | IN | EX | IN | EX | |||
| 2900 - 6600 | 871252 | 303° | 305° | 239° | 244° | .614'' | .614'' | 114° | HYD | HYD |
Must use performance springs.
Must use performance retainers
Check valve train geometry before ordering pushrods.
Converter stall speed should be equal to or greater than the minimum rpm of the cam power range.