I've got a '04 ECSB 5.3L with ~48,000 miles. I'm not going to be racing. Mainly a DD with occasional heavy towing. I just want more torque! I rarely see a 5000+ pull. I want something that will keep the mileage up and give more power. I've got the G80 with 3.42s so I might be looking at a posi or trutrac(recommendations??) Since I'm leaning more towards torque, will the stock converter and tranny be fine, or should I beef it up? Comp recommended a 54-408-11 which is a 206/212. Click! Also looking at this valvetrain upgrade kit. Do I need a new timing chain? Valve locks? Valve seals?
EDIT: I have a K&N CAI and flows catback. Headers are in the budget, too.


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