Well after being a back burner project for years, I finally got around to finishing up the Cobra. I first got it back in 2014, traded my '06 Z06 for it and lots of cash. It was then a teksid block twin turbo build. That sounded awesome until a rod knock forced me to garage it and start tearing it down. Turned out the block was trash, turbo kit looked like it was designed by a 5-year old, and I'm pretty sure the fuel system was thought up after a few bud-light 30-packs in a trailer park.
I then decided to scrap everything and start over from scratch. $30k and several years later I ended up with a 5.3 big bore stroker with a Procharger, RPM-built T56, and a complete custom BBRC fuel system.
Today, I finally got it tuned by Robert at Vendetta Speed in Spring, TX. Turns out the blower pulley I received was bigger than I thought, the car tapped out at 15 psi instead of the expected 23+.
At 15 psi, 21 degrees timing, 6200 rpms, she still put down 744 rwhp in 98 degree humid Houston weather. Peak torque was 662 rwtq at 5700 rpm. E85 of course. Here's the video:
I then decided to scrap everything and start over from scratch. $30k and several years later I ended up with a 5.3 big bore stroker with a Procharger, RPM-built T56, and a complete custom BBRC fuel system.
Today, I finally got it tuned by Robert at Vendetta Speed in Spring, TX. Turns out the blower pulley I received was bigger than I thought, the car tapped out at 15 psi instead of the expected 23+.
At 15 psi, 21 degrees timing, 6200 rpms, she still put down 744 rwhp in 98 degree humid Houston weather. Peak torque was 662 rwtq at 5700 rpm. E85 of course. Here's the video:
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