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| Project Overkill Since the ti went upside down and I got that out of my system I decided it was time to build a convertible. You can't roll two in a row, right? Problem is the convertible is a bit heavier than the ti so the car felt slow. I didn't track it but my guess is mid 12s. Not near fast enough. Solution: Build a 383 stroker and hang an STS rear mount turbo on it. The Motor Start with an LS6 block and bore it to 3.905 to clean up the cylinders. Add a 4" stroke Eagle forged crank, 6.125" Eagle H-Beam rods, and Mahle forged alum 26 cc dish pistons. ARP rod bolts and the bottom end is good for 1000+ HP. Top the motor with CNC ported stage 2 heads from ET Performance. Comp cams 230/230 .585 lift on a 115 lsa and LS7 high rev lifters. Boost Boost is provided by a Garrett GT67 unit with a .96 AR. This should be capable of providing 15 lbs of boost. Electronic boost controller allows for selectable boost level. 5 PSI normally switchable to 15 psi. Intercooling will be done using a methanol injection system. If this proves to be inadequate then an air to water system will have to be used. Tuning The plan is to run a 4" Lingenfelter MAF on the suction side of the turbo and use LS1 Edit to perform a MAF tune. I have decided on a MAF tune instead of a speed density tune just because I believe the MAF tune is more robust to changes in weather, altitude and driving conditions. The biggest issue with a MAF tune with forced induction is pegging the MAF. Once you flow enough air to top about 550 HP the MAF runs out of range. Lingenfelter makes a 4" MAF that is to be good to 800 HP Expectations If the tuning goes well this combination should yield great low end power and should develop 700-800 HP with 15 psi boost. Expected Completion Date June 15, 2007 |
