I saw were a boy put a set of ASM's on his truck and he gained like 20rwhp and he had the chart to prove it, it was posted on LS1tech I believe while back. I was told shorties are not worht the money to go ahead and save lil more and get the "Real Deal" Long Tubes..... I noticed a big difference with my ASM's. Pacesetters are great headers for the price.
2002 Red Chevy RCSS (engine mods)- 05 5.3L, Procharger P-1SC 9lb.pulley, 80mm BBK TB, TB By-Pass, 38lb. Inj., AlkyControl Meth Kit, ASM L/T's, Magnaflow X-pipe, Borla's, FLT Level 5 4L65e, PI 3000 Stall, B&M Tranny Cooler, 3:73's, G-80, E-Fans, 160' Thermo. Custom Built Intake with K&N. WideBand 02 Sensor, DIXIE TUNED.
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