4.8l LS Turbo Zepher Wagon

This is a Gen 3 4.8lwith a 69mm gt45 turbo, trick flow 216/220 cam, blue ls3 springs, microsquirt with 55lb gt500 injectors, unintercooled, 94 octane pumpgas with washer fluid coming out of a 625ml snow nozzle. Made 525whp on 16lbs on 2deg timing (IAT'S were pulling 10*) and 541whp on 16lbs and 7deg, IAT's were 238* at the end of the run measured before the meth nozzle. Loaded dyno.

[@ROBDEZZIE89]

I was curious about this cam. . . I have one in the garage ready to go in a 88mm LS2 and was having second thoughts. . . Nice vid!

[@ROBDEZZIE89]

What valve springs are you using?

[@Thehouseofboost]

12499224 Gmpp, they are $65 on summit racing.

[@Thehouseofboost]

shouldn't be an issue, we have a 5.3 with an 88mm that is making 800rwhp with these springs. Cam profile can make a difference but these springs will work with any stock cams and and pretty much any cam with 230 or less duration and .560 or less lift.

[@96cr]

where was the max power rpm wise?

[@Thehouseofboost]

+96cr around 6000rpm