T5superduty

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Believe it or not there was someone I talked to who had a supercharged one running like 15 psi and he had like over 100 thousand on the motor and it ran great..</P>


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And does anyone know anything about the Holley Systemax II kits for the 5.0 they say 350 horsepower but this guy with a 306 said he only dynod 289 rwhp with
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<DIV><FONT size=1>a 306 summit rebuild kit, fresh block punched out 30 over, The heads and intake were ported and polished, stage two, 30# inectors (A bit big), 76 mm Mass air. This combo I think should have seen way more power !</FONT></DIV></TD></TR></T></TABLE></P><edited><editID>T5superduty</editID><editDate>38014.1972800926</editDate></edited>

horatio102

15psi?? That's more than the off-the-shelf kits put out. He must have had some custom tuning done. Running that kind of boost with non-forged internals is asking for problems. But with 100k+ perhaps it's an older crate with forged? I don't know the history of that crate motor.

It's possible to run 50psi if it's tuned right, and if you drive like a granny and never get deep into the boost.

mkspeed26

building your own or having someone build you one would be a better idea. much more power possibility.