Who did the LS1 manifold test?
Does anyone remember which magazine it was?
, the test proves ls6 > Weiand. the weiand wand fast were both port matched.
, the test proves ls6 > Weiand. the weiand wand fast were both port matched.
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Stock LS1
LS6
6.0L Truck
F.A.S.T. LSX
Weiand/Lingenfelter
The 6.0L came out on top, actually.
Does this ring a bell with anyone?
Does this ring a bell with anyone?


