Befor & after pics 305 2 355
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Joined: Aug 2005
Posts: 277
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From: Milton FL near Pensacola FL
Car: 1985 Z-28 2003 chevy Silverado Z71
Engine: was 305 LG4 now 355 HO
Transmission: TH700r4
Axle/Gears: posi 373
With the K @ N XStream I felt a difference a slight one nothing major. I took it to a local mechanic shop they took about a week to drop it in with the headers/Y-pipe. Breaking her in now the engine had 0 miles on it since the rebuild so waiting till I get 500 miles on it change the oil and check the vales before I dyno.
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