Re: Ported 5.7l Throttle Body on a 5.7
I doubt that you'll notice much, if any, difference since the stock throttle body flows more air than a stock 5.7 is capable of ingesting. You'll probably also notice a loss of power if you go to a 2.75 in. exhaust system. It's too large for a stock 5.7 and won't scavenge properly. Over in the LX community we tried it years ago and ended up putting a small restriction (smaller piece of pipe) in the system to get the power back.
05 LX/RT & 06 WK/GCO, modded similarly, MDS "ON" Light, Vortex Gens, Debadged, DashHawk, BT Catch Can, SRT CAI W/Add Air Inlet, K&N Filter, Sonnax Trans Press Booster, SC Tuner W/Adv Trans Tuning App, DS Tuner, Cust tube headers w/3 in. catback, Bilsteins, SRT frt/rear bumpers, Eibach SRT Lwr Sprgs & Sways, FRI Sidewinder Cam Adv 2*, 6.1 valvetrain, SLP 25% UD Pulley, BBK 90mm TB, SOS Coils/.060 plug gaps. 20 in. SRT Reps.