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rentedmule · 01-31-2008, 12:39 PM

you boost the same PSI at altitude, it's just that the air is less dense and contains less O2 hence you make less power. on the other hand you're less likely to have detonation issues at altitude and can adjust your boost and timing to make up for the power loss.

you can't just change pullies to run more boost on a S/C - you're very limited as to how much you can adjust your boost with most blowers. headunits have factory spec'd tolerances and if you spin them beyond those tolerances the bearings give out, the impeller hits the casing @ 40K rpms and all the tiny shards get sucked into your engine. i can post pics of the fried/busted bearings that came out of my blower if you want proof

and why the heck do people keep saying you can't intercool with a supercharger??? it's just a matter of plumbing some intake tubing, what's so difficult? I can post pics of dozen's of intercooled S/C setups if you want?

on the turbo lag subject, the turbo 4.3 guys I know are making full boost (20 psi+) at just over 2000 rpms. if you have an automatic trans with the proper torque converter you're pretty much in boost as soon as the truck starts to move

01-31-2008, 12:39 PM	#66 (permalink)
rentedmule Registered User Join Date: Dec 2005 Location: Edmonton AB Posts: 330	you boost the same PSI at altitude, it's just that the air is less dense and contains less O2 hence you make less power. on the other hand you're less likely to have detonation issues at altitude and can adjust your boost and timing to make up for the power loss. you can't just change pullies to run more boost on a S/C - you're very limited as to how much you can adjust your boost with most blowers. headunits have factory spec'd tolerances and if you spin them beyond those tolerances the bearings give out, the impeller hits the casing @ 40K rpms and all the tiny shards get sucked into your engine. i can post pics of the fried/busted bearings that came out of my blower if you want proof and why the heck do people keep saying you can't intercool with a supercharger??? it's just a matter of plumbing some intake tubing, what's so difficult? I can post pics of dozen's of intercooled S/C setups if you want? on the turbo lag subject, the turbo 4.3 guys I know are making full boost (20 psi+) at just over 2000 rpms. if you have an automatic trans with the proper torque converter you're pretty much in boost as soon as the truck starts to move __________________ '93 4runner, 3.0, 31x10.5's, OME900's. '84 Xtracab, 22R, flareside, 6" lift, 33x12.5's '03 Sonoma 2wd, supercharged 4.3L@9psi '81 Turbo Trans Am, WS6, 301V8@9psi Last edited by rentedmule; 01-31-2008 at 12:41 PM.