After 6.5 years and 55K miles, the LS4/F40/E67 swap had a DoD lifter failure in September 2019. This was my opportunity to make some major improvements from the current 382 whp and 29 mpg.
The high level goals for this next round of upgrades are 550+ whp, 2899 lb curb weight, and 30+ mph. To get me to the next level a turbo is being added with a focus on weight reduction. Current list of upgrades
- 2007 LS4 w/73K miles – tear down, check ring gaps, hone, reassemble with new bearings
- DoD/AFM delete
- Reluctor wheel swap to 24X for use with the E40 ecm
- Tick Stage 2 Turbo camshaft for the 4.8/5.3L engines, 219/223 .613/.595 LSA 114+3
- Smith Brothers bronze bushing rocker upgrade
- Texas Speed CNC Stage 1 ported 799 heads
- Dorman LS2 intake manifold – smoothed and ported
- Modified LS6 front exhaust manifold
- Modified Truck manifold for rear turbo manifold
- BorgWarner S369SX-E turbo – enlarged air path
- Custom stainless steel exhaust with dual mufflers and cutout
- Custom tubular rear cradle with 4 corner engine/transmission mounts
- Custom LS(x) water manifold
- Custom mechanical water pump housing
- Custom 13# aluminum flywheel
- McLeod twin disk clutch
- Brembo front brake upgrade
- Custom steering wheel insert
