LIST-90670-2 - Truck Avenger - A

What a mess of malfunction these things are... Not just my opinion... I can't count now how many who have run these as is and have relayed the information to me about their piss-poor function... gigantic jetting, fuel-slugging check weights within the main wells, dangerous 2.5 power valve, as well as just being another 600cfm vacuum secondary with an invented flow rate and a scary sounding name. The "670" is pure marketing, folks... there's no way to stuff another 70cfm through the same venturi and bore sizes that has been a 600cfm since the beginning of time...

Interesting small annular primary boosters... and NO main air bleeds...




Front and rear, same, no main air bleeds...




As well as no "e-bleeds" in the dog leg air wells... which stands to reason, since there are no main air bleeds...




Opened up the blocks, removed the check weights, drilled the wells full diameter down to the jets, drilled and tapped for there to be main air bleeds and "e-bleeds", and primary idle feed restrictions... all adjustable...










New, adjustable main air bleeds...




New, adjustable primary idle feed restrictions and primary and secondary "e-bleeds"...




Ready to go back together...




The calibration... based upon a repeatedly very reliable 600cfm "recipe"...




Ready to rip... and rip she did indeed...