Thread: 671 on a SBC

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The car club I belong to has a couple of members running a 350 engine with 9:1 and 9:5 compression and there using a 6-71 blower but only running 4 lbs. of boost. Anything over that as Pat and Dave mentioned will kill your engine fast.

Originally Posted by chevy 37

The car club I belong to has a couple of members running a 350 engine with 9:1 and 9:5 compression and there using a 6-71 blower but only running 4 lbs. of boost. Anything over that as Pat and Dave mentioned will kill your engine fast.

Who had those numbers??? Gotta wonder if 4 pounds of boost even gets back to even for the horsepower loss to drive a blower????? They look nice, but when I put one on a car it's for GO POWER, not show!!!!!!

Dave I was thinking of my buddies(Dave & Pat) in out car club. They are both running 4 lbs. of boost and as you mentioned they are maybe getting about 20HP more at the most. They care about looks, not performance. Nice to have alot of money you can spend on just looks

My original plan this winter was to do a heads/cam setup, but I recently attended a rat rod show and fell in love with the blown rats.

Prolly end up doin my original plan and then buildin the shortblock with some larger dished pistons and strongers rods and crank.

Thanks for all the help and Im sure ill be askin more question as I'm new to the old school stuff

-Robb