SPECS
Horsepower
375 HP
Torque
350 LB-FT
Curb Weight
2750 LB
Drivetrain
Front Wheel Drive
Engine Size
2.2 L
Transmission Type
Manual
MPG (City/Highway)
22/28 MPG
VEHICLE STORY

I bought my Cobalt LS 5-Speed my junior year of Highschool for $10,500 with 15,000 miles on it in in 2008.  It wasn't long and I had a cold air intake and a cat-back exhaust.   These are the only mods I had done to it until 2015 because I didn't really have spare money in college.  June 2015 I decided I wanted to give this girl some power and I also wanted to keep the outside looking bone stock for the sleeper effect.  So I started of with an M62 supercharger kit from ZZP.  I ran this blower with a 3.1" pulley and about 10-11 pounds of boost on stock internals for about 6 months.  I was still getting the bugs worked out on the tune when a Harrop HTV1320 supercharger came up for sale from someone I know.  So I bought it.  In order to get any additional power from the larger 1.6 liter blower I had to install forged rods and pistons.  While I was at it I went ahead and replaced the con-rod bearings with Clevite rod bearings and installed stiffer valve springs from ZZP.  After the install was all said and I was dialing in the tune on 91 octane (it is the only thing available in my area) I had pinging.  I always feel like knocking the ignition timing down to fix pinging is like giving up free power so I installed a Devil'sOwn water/methanol injection kit with a progressive controller. Now that I have everything tuned up she is running like a true sleeper.  No one expects a Cobalt with steel wheels to be fast.

Discuss this build

[]Alex Fleming

love it, i can never get enough of these LAP builds. great job man :)

[]Rudie S

thats pretty much my plan for my L61 5M and i'll keep my LNF mostly simple bolt on's. The L61 will be outside stock but the rest will be built way beyond stock.

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