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11 answers

If you put a supercharger on a stock engine you are just shooting yourself in the foot . You need to decrease the compression ratio of the pistons to at the most about 7 to 1 . Any more than that and you'll have to run $7 a gallon racing fuel , or your supercharger will be just for looks .
On a 350 Chevrolet with 5 to 1 pistons , a roller cam of at least .600 lift and 850 cfm or more carburetor a 10 psi boost will give you 30% to 50% more horse power . Running this kind of power against a stock crank can be catastrophic though , so get a billet crank too . We are talking serious horses compared to stock , so whatever you put this engine in will need chassis mods to just to be strong enough to hold up to this much power .

2007-07-27 07:49:44 · answer #1 · answered by Mopar Man 3 · 0 0

Depends on the truck and the supercharger, and it takes more than JUST a supercharger to get any real gains. You need more info. My V6 Toyota started with 245 hp. Then I added a URD supercharger, new pulleys, 7th injector, headers, free-flow cats and exhaust, replaced the radiator fan with 2 electrics. Now I get just under 340hp.

2007-07-27 14:35:47 · answer #2 · answered by Spencer C 3 · 1 0

You need to really research the limits of your engine first but a supercharger will drag a lot of horses out of your engine just to run it..... off the top of my head, a 6 litre 500hp unit will need around 100 hp to run it..... but it will boost your engine incredibly.
Its all about efficiency, you will need to find out about your compression ratio and how to reduce it plus valve lift/timing and fuel timing etc otherwise you will blow holes in your pistons or valves and even blow your cylinder head gaskets due to the increased firing pressures.

A turbo charger is a slightly softer way of boosting an engine as it is run from the exhaust output and doesnt draw any power to run it.
However, you will still need to reduce your compression ratios and adjust valve and fuel timing or disaster will await!!

Good fun project if you have a few engines to 'trial and error' with...

Good luck and get on to any forum dedicated to the manufacturer of your truck or engine....

2007-07-27 14:38:09 · answer #3 · answered by ants_toes_knees 3 · 1 0

What truck? What engine? If you're talking about a sb Chevy, you might experience a gain of about a hundred to a hundred and fifty hp with a magna-charger setup. If you're starting with a four banger in a Ford, you may only gain sixty or sevent horses. If you've got a six in a Dodge, you may gain eighty to a hundred. Depends upon your starting point and how much you're willing to spend. Good luck!

2007-07-27 14:38:04 · answer #4 · answered by Kiffin # 1 6 · 1 0

depends on cubic inches and how low the compression you start with...if you have a new truck less than 100 hp..
if you have a mid 70's Chevy with a 454 you could easily gain 400 hp

2007-07-27 14:34:59 · answer #5 · answered by Anonymous · 1 0

That depends on the truck, the type of supercharger, the engine you put it on, how many miles are on that particular engine, what kind of fuel you use, Transmission size and gear ratio in tha transmission, your differential gear ratio, and many, many other things. I have a question: "Why cant people be more specific about how they ask a question about something as complex as a motor vehicle?"

2007-07-27 14:31:00 · answer #6 · answered by Gobyknows 5 · 0 2

give me 2 free points . We cant answer a question without knowing more information. Do you know how many trucks there are ? usually a supercharger can add 30 - 100 hp

2007-07-27 14:31:06 · answer #7 · answered by Anonymous · 0 3

A good GENERAL rule is 10% increase over stock per PSI. but, note, that your engine is not built for 10 psi without serious internal modifications. 4-5 PSI is about max for a stock engine due to structures, but probably will have to retard timing proportional to boost and run premium fuel.
Good Luck

2007-07-27 14:34:25 · answer #8 · answered by Anonymous · 2 0

Its hard to say exactly. It can vary from engine to engine, but if you have a V8 you could expect anywhere from 30-70+.

Then again this all depends on what engine you have, and its original design purpose.

2007-07-27 14:29:13 · answer #9 · answered by Anonymous · 1 0

De[ends on the boost. But you can figure that you can get 100+hp with enough boost.

2007-07-27 14:29:46 · answer #10 · answered by Fordman 7 · 1 0

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