1eclipse1t Posted August 11, 2011 Report Share Posted August 11, 2011 I have heard that manifolds and y-pipe off a LT1 z28 will fit on a 90's model silverado. Does anyone know this to be true? I dont want to spend 5 or 6 hundred on a y-pipe header combo on my old truck. I need a bit more power to tow stuff and I have seen dyno numbers that just changing the stock y-pipe frees up about 15-20 torque. Anyone tried this set up? Quote Link to comment Share on other sites More sharing options...
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