I'm going to buy the ProCharger D-1SC for my project car but before I put the new engine I'd like to have some fun killing the original LB9. What's the max boost that I can run on a factory LB9 and not instantly blow it up but just about have it maxed out???

Don't worry, I'm not killing a perfectly good engine here. It has 150K miles and was never mantained correctly. It puts out blue smoke on heavy acceleration and smokes when you start it cold BUT it runs really strong still

 

Alex, you really wanna drive over your crank don't you

 

What do you mean I know that the D-1SC is waaaay too much for the factory 305 anyway but what the hell 15-20lbs of boost never killed anyone

 

Theres always a first

 

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But a rod or two comin through the fire wall could! :lala:

 

All joking aside, is the D-1SC just too much for a factory 305 even w/the minimum boost?

 

Well, let's see.... the D1SC with a 4.00" blower pulley is "rated" at 10-psig on a stock 350 at ~5,200 rpm. So on a 305, I would assume slightly more boost would be attained but I'm not qualified to say how much because mine is far from stock. I attained 8-psig.

With a 3.70" pulley, I got 2-psig more. This pulley spins the impeller 8 percent faster. So let's say you went with the largest blower pulley, 4.25". This would slower the impeller 6 percent. Based on the 10-psig rating above, the 4.25" pulley should result in 8 to 8.5-psig boost on a 350. Making an assumption that you'll get ~2-psig more on a stock 305, that yields 10-psig with a 4.25" pulley. As long as you run an intercooler and an aftermarket ignition, you should not have any catastrophic events.

BTW, once I get the twin hi-flow intercooler setup on my car, my three-core IC will be for sale.

 

So woth the 4.25" pulley and say a standard MSD ignition I'll be alright, cool.

Actually I'd like to copy your dual setup for my final project.