408 Heads and Cam Camaro at the Track
A good vid of the car launching at the track, this isnt the cars best run
either, I had to short shift second. Was having as problem getting it in
gear. I'm still alittle slow on my shifts, better than breaking it I
LS 408 Silverado ... Exhaust and Burnout
Here is my 408 build. Its a 2003 LQ4 block bored .030 over with a 4"
Callies crank. 6.125" Callies rods and Wiseco flat top pistons. 11.4:1
compression. It has stock LS3 heads, manifold, and injectors. Cam is a Pat
G spec'd 231/239 on a 114+2 LSA. This is a true daily driver and sees the
track maybe once or twice a year. The Exhaust is dual 3" from the collectors to a
magnaflow muffler. Single 4" out over the rear end. The truck Dyno'd 434hp and 400ft tq
through a built 4L80e. This is my first LS motor so I didn't know anything
about the tuning process. I had a speed shop tune the thing when I first
got it started. Then it went directly to the Dyno. After my research and the
purchase of HP Tuners, I think it has at least 30hp left in her. But not
bad numbers for stock components through a 4l80e.
LQ9 404ci Camaro SS Dyno
LQ9 404ci Dyno on a MustangDyno
- Eagle crank and rods
- Diamond racing pistons -10cc
- Ported L92 heads 345cfm @ .600, 352 @ .650, 64cc chamber
- Ported LS3 intake by JeremyF of faster proms with 92mm Fast TB
- Patrick G custom cam 227/235 .639 .621 114LSA+2 LSK/LSL lobes
- SLP LID
- 85mm MAF
- Powerbond underdrive pulley
- ARH 1 3/4 headers with catted Y pipe
- 3in single cut out after the Y, Magnaflow catback.
Through a 9 in moser rear end w/ 4.11s, 3in steel driveshaft, Textralia
OZ700 z grip. Stock SS/ZR1 wheels.
Close cutout: 422whp & 425 wtq SAE
Open cutout: 430whp & 433 wtq SAE
In the 460whp range on a Dynojet