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Old 03-25-05, 03:24 AM
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Re: The "4.9 liter turbocharger, stage 1" thread.

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Quote:
Originally Posted by illumina
No. Nitrous is not an option. It will probably kill the bottom end the first time I press the button.

Turbocharging is a much better option in terms of longevity and efficiency. And besides, nitrous will destroy the stock pistons in these engines on the first run...No No No...Not an option...Beside, nitrous is not real horsepower.

As it stands right now, I may be looking at a nice 75 hp increase from the turbo on 4-6 psi of boost which will be apparent through a decent range (2500-4500 rpm's) when compared to nitrous. It will not be as tough on the bottom end and pistons as long as I tune things right.

Nitrous you say? No no no no no!
With nothing more than a stock 301 Pontiac(with beefy block), a mild .350 lift cam, 250 gross duration, crappy crappy heads with 1.75in/1.5in valves, a very poor designed turbo compressor outlet, a way too small turbo, 2.25in single exhaust, a total of 24 degrees mech timing, a 800 CFM Q-jet , and a old pellet tpe catalytic could make 210 hp. And with minor mods (K&N, but stock ar cleaner), upped timing (mech and initial) and cat removed, (yes, a pellet type) cold make 290 rear wheel hp with only 7.5 psi boost, imagine what can happen to a properly setup Cadillac 300 CID V8?!?!?!?

Heck, even an improperly one can make 300 hp easy!!!

Turbos respond to mods very well, sorta like a multiplier not just an adder!

Tom