if i bought either a paxton or similar centrifugal supercharger and ran in at low boost like 5-6lbs would i be able to run it on a stock motor without any problems.
With a good tune biased toward safety and not power, yes. In fact, you can run upwards of 8-10psi on a stock motor if the tune is spot on. Every pound of boost over atmospheric carries increasing risk of course, but the bottom end of a solid 4.6 is able to withstand ~400rwHP
if the tune is such that you don't detonate.
Would i need to upgrade anything like injectors or maf?
Absolutely. Injectors will be a must. The MAF...at 5-6#s, probably not.
obviously i would need to dyno tune it to make sure the a/f ratios are safe and such.
Probably the most important part of any FI install.
i would assume that you would need to run a premium gasoline tune , but would it be possible to do it on 87? Im just looking to see everything that might need to be done so thanks for the help.
Hmm. Probably have to ask the tuner but I doubt it. Detonation is the worst enemy of the stock shortblock. 87 is pretty dodgy. Any gas station that has 87 has 91 or better. If you absolutely can't get anything other than 87, carry a couple of bottles of NOS octane booster in the trunk as a back-up. Each bottle is ~1.5 points of octane increase.
If you're considering 87 for the $$$ savings over premium, you probably shouldn't be looking at a blower.
btw are there ne good chargers out there that run under $2000? i havent really looked into it too much but if anybody knows thanks
I doubt you'd be able to locate even a high-miles well used system for that.
Cost-cutting and blowers don't go together. Really, if you're putting FI on a stock shortblock, you should have enough money socked away in reserve to put a new/used engine in it especially if it's a daily driver. The 4.6 is pretty strong but it only takes a second to crack a brittle ring land with some detonation.
