Ok, you guys definatley had a good point about not spending that much money on such a little return. I am looking to supercharge or turbo even my four-valve. With 110k creeping over my odometer, how much boost can I safely run without having an explosion? I can only run 93 octane where I am, and don't really wanna have to deal with anything else. Would I safely be able to run 10lbs? Also what would that return to me at the crank and at the wheels? I would like to be able to run 12 but i'm sure that would melt my old stuff. Help me out guys, oops, I mean gurus!

 

7-10 lbs is usually considered "safe", but with 110k miles, you should expect something to expensive to break if you run boost, In financial situations i try to expect the worst possible problem, that way you are well prepared to pay out

 

id think about 7-8 where it is right now, the KB for that car comes as a "6 PSI kit" so that might be an indication of what is suggested, that kits about 90hp for 4k

 

On a fresher motor, you should have NO problem running 10 lbs on an intercooled kit, HOWEVER, with your miles, no one knows what condition your engine is in. It might be tired, the rings might be too worn, or the bearings may not be that great, but that is all speculation.

With a good tune, and not going crazy with timing, your engine should be able to handle 10 psi, with the proper supporting mods. (ie; injectors, fuel pump, maf...)

 

I would like to put an emphasis on INTERCOOLED. I would imagine bad things would happen if he did 10 psi on the kenne bell with 93 octane.kenne bell doesnt love those of us with B heads : (

 

there is no way to tell... everything should be intercooled, no exceptions. You should be good with 10lbs supercharged and 6-8lbs turbo'd - depending upon how its piped. But a better way to gauge is power. Tune it for 380 rwhp, as conservative as you can get it and enjoy it

 

I was going to get a procharger and run either the 8lb or 10lb pulley until I had time to rebuild the engine. To save time I was thinking about just getting the shortblock, transferring my heads/etc over to the new block and then turn the boost up. Should I worry about the crank with that many miles? I know it will hold up but is it probably too rough to reuse? Also, what would my trans hold as far as power? I know I would probably be ok on the 8lb or maybe even 10 but I will be trying for 15-20 probably once the engine is rebuilt and don't want to get all that together just to find out the trans is the next weakest link and breaks right away.

 

start with the procharger, nice safe tune 8lbs, run that as long as you can... then rebuild when you need to. just my .02 ..

 

That sounds like a good idea, but would the 8lb be the most I could push? What would I probably get out of it maybe at the wheels? I would really like to run the 10lbs and was thinking with the free flowing exhaust it wouldn't put as much of a strain on the engine.

 

One other question. Could I run a set of UDPs with the supercharger? I was going to get a set but there is no point if I'm gonna have to take them back off when I get the supercharger.