zgeezer Posted April 9, 2005 Share Posted April 9, 2005 I need some advice. I bought a 2002 LM7 Chevy truck engine for my swap with the intention of bolting on a positive displacement blower. Either a screw type or something based upon Eaton rotating parts. These are popular with the pickup truck crowd. I've just about the funds to purchase. The problem that two nationally distributed magazines have published results that would almost indicate that this class of blower really does not perform. One magazine (I think Hot Rod or Car Craft) ran a comparison of a Turbo, a belt driven centrifugal blower and a MagnaCharger. The centrifugal blowers outperformed the MagnaCharger to the extent that the magazine spent 1/2 page falling all over themselves apologizing for their tests. The other was a bolt on test installing another positive displacement blower with an intercooler on the new ls1 powered Pontiac GTO. It that test, the blown GTO was only marginally quicker than the unblown stocker and got slower as it heated up. My z will be a driver, not a racer, and being the quickest gun in town is not my goal. Still, I don't want to drop $3-4 big ones and not be running at least 1 second quicker in the 1/4. Anyone out there have real life experience with the screw or Eaton based blowers? Thanks, G Quote Link to comment Share on other sites More sharing options...
johnc Posted April 9, 2005 Share Posted April 9, 2005 Maybe the test results you're reading are more indicative of the shoddy testing practices of various magazines? The vast majority of tests done by magazines are sponsored by the product manufacturers themselves. Unless things really go wrong (as in the Magnacharger test) the sponsoring manufacturer is going to come out of the test looking pretty good. Quote Link to comment Share on other sites More sharing options...
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