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Re: whats the LS swap mpg gains?
With the 4.11 gear, & no OD, I dont think you will pull close to 20mpg. I have a 4.8, in my 02 -1500 (2wd). With a 3.73 gear/4l60E, with .7 OD, she gets aroud 13.4 in town, & around 18 on the hyway. Still dreamin about the 5.3 swap in my longhorn....so I cant really say on that one...crazyL
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69 longhorn,4" chop,3/5 drop, 1/2 ton suspension/disc brakes,1 1/2" body drop,steel tilt clip, 5.3/Edelbrock rpm intake/600 carb, Hooker streetrod shorties,2 1/2" exhaust/ H pipe/50's Flows , 6 spd Richmond trans,12 bolt/ 3.40 gears....
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