GPI L86 Stg 1 low lift cam and headers dyno

[kgkern01]

Just finished up a cam and headers swap on my 2015 L86 Sierra, and got a dyno tune.  I figured I’d post details here for anyone interested.

Mods on last tune:

E85/Flexfuel conversion

Volant intake

Dyno tune

 

New mods:

Cam: GPI L86 Low Lift Stage 1 cam, with 4* VVT limiter

Headers: Speed Engineering 1 7/8” with y-pipe, stock catback.

Cosmetic .028” head gasket

 

65rwhp and 37rwtq with just the cam and headers, with torque gained across the whole powerband.  Has a nice small lope at idle but still drives like stock (after the tune of course).  It liked 0* VVT best until 4800 anything else and it lost 10# of torque, then 3-4* ****** up top above 4800 for best hp and tq above this RPM.  If you notice the curves and peak numbers are almost at the same RPM range as stock cam as well, only 160 RPM higher on tq and 190 RPM higher on hp.

 

Edited September 7, 2022 by kgkern01

[SeekAndDestroy]

Awesome power numbers! I bet she's a blast to drive! I wish E85 was easier to find up here. Love that torque curve