Supercharger recommendations?

Jspronk said:

thanks for the info guys, i can tell i needed alot of help, i'll probably go with the 400 hp kit by FRPP (whipple) and maybe if i get bored with it get the 500 upgrade....thanks for the help!

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Good luck, keep us posted.

WK-200752B (Black) or WK-200752P (Polished) for 2005-2006 Mustang GT

Thats the Whipple Part # for the FRPP/Whipple Intercooled HO kit set at only
7psi. Its an intercooled kit for the Automatic. It comes with the GT500 Fuel Pumps just like the 10psi Manual Kit.

It will be easily upgraded with a pulley change and a PCM reflash to the 500 hp version.

The standard FRPP/Whipple Tune isnt the greatest but hopefully your will work okay. If it turns out to be very lean its hard to FRPP to admit the problem and fix it.
If you go aftermarket to save your engine then your warranty is void. Catch 22.

PS The warranty is only 12 month or 12000 mi if you already have over 1000 mi or at least thats my understanding. The 36,000 mi waranty is actually intended for new cars sold with the kit.

All of these issues are what made me just decide to stay normally aspirated.

7 psi will put you at or near 415 rwhp. Just get that kit, run the car around a while and if you want to upgrade later just like Gene K said buy a pulley and I'm sure it will also require a belt and probably an idler pulley to make it all happen. At least you'll have the fuel system and intercooler. I think you'll like it. I mean, you'll definitely be smoking the tires at will. That problem with Whipple ProCal tunes being lean as hell is rare. The Ford engineered tunes are supposed to be the best canned tunes out there

98GTfromGA said:

Guys are the rods weaker in the '07 and '08 cars? I have heard of a few low mileage '07s throwing rods under boost. I talked to the service manager at local dealer about installing the Ford Racing blower on a '08 and he told me they did one a few months ago on a '07 and the guy bent two rods after 11,000 miles. Seems like the '05-'06 can handle over 500hp without any problems.

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Haven't heard about that. Any year 05 and up, when your at 500rwhp your on thin ice when the bottom end is stock. Some that are well tuned, or not racing that often are surviving, but I think failure at that point is not a matter of if, its when. I built my bottom end with JE pistons, scat rods, cobra crank when I knew I was going over the 500 mark. I also race mine quite a bit to. You will like this pic:

Many live long lives at 450. That picture was meant to show you how small the rods are that many push to 500rwhp. Not much bigger then your typical toothbrush.

Yeah, I always refer to the horsepower as rwhp. So if the kit is rated at 500 hp (at the flywheel), then typical drivetrian loss is around 15%, which would make it yes around 425rwhp---with a good tune the stock bottom end can survive at that level---many are higher then that. I will say, however, that I have read about engines failing at all different power levels. One was a turbo at 452rwhp. So while we can pick a number, its going to depend on the tune and alot of other factors. But with a good tune 425rwhp shouldn't be a problem.

An H.O. Whipple kit with the stock H.O. pulley will net about 460-480 rwhp with full exhaust. (manny tranny) I agree, 450 rwhp and up is pushing it for sure.

A larger pulley is all that is needed. Go with the 10 psi kit, I think you will be fine. Just have a conservative tune with conservative timing at WOT.

Yeah, sorry about that, when I first read your posts, I thought you were talking about 500 rwhp. I still stand by what I said earlier, at 500 rwhp you would be on borrowed time.

However, I did not realize you were talking about horsepower at the flywheel. So to sum up, keep it below 450rwhp, and have a conservative tune with conservative timing at WOT and the stock bottom end should do fine.