This little M90 Supercharger, the one that came on supercharged 3800 V6 GM engines, has been the talk of the town lately as it can actually support some real power on a junkyard LS engine that doesn’t need a lot to be a very reliable powerhouse. This setup is super simple, but does this adapter plate for the Holley HiRam make this thing more or less efficient than it really should be? Are people right who say that the front four cylinders are going to be getting all the love? Watch and learn.
Video Description:
FULL DYNO RESULTS. CAN I RUN A JUNKYARD V6 BLOWER ON MY LS V8? CAN A $100 JUNKYARD M90 REALLY MAKE 537 HP? DOES THE FRONT EXIT OF THE SUPERCHARGER FAVOR THE FRONT FOUR CYLINDERS? DO SOME CYLINDERS GET MORE AIR FROM THE SUPERCHARGER THAN OTHERS? IS THE HI RAM A GOOD INTAKE DESIGN? WHAT IS THE AIR FUEL DISTRIBUTION ON A HOLLEY HI RAM? DOES THE HI RAM WORK WELL UNDER BOOST? CHECK OUT THIS VIDEO WHERE I RAN 8 OXYGEN SENSORS ON AN M90-SUPERCHARGED 4.8L V8 TO FIND OUT IF THE FRONT DISCHARGE OF THE BLOWER FAVORS THE FRONT FOUR CYLINDERS.
