I have a 2005 496 HO with a Procharger running 5psi., the engine has been totally fortified with forged pistons ect. and has a pcm from AZ Speed and Marine. It is running lean of course, and needs the fuel sustem upgraded. Does anyone have experience with this, and if so, what fuel system do I use? Do you bypass the stock cold fuel pack? Details would be greatly appricated, thanks for your time, Frank

Same question different thread . Same answer as other thread, only a few people around that can do what you need done to the computer & az speed is NOT one of them.

Do not use AZ SPEED they blew mine up twice

putting a procharger on a 8.1 is just pulling the pin....

I was going to put a whipple on my 496HO but too many people told me not to that if I did it would be a ticking time bomb. The shop I use told me the only why I can is to go through the motor and beef everything up which will cost me about $12000 and the the whipple which is another $8000. After all the I need a new drive. Just doesn't seem worth the money to me for maybe 10 more mph. The thing I was wondering is if it would just be cheaper to pick up a 502 that has forged parts in it already and the install a whipple on that. If I was to go that route would the 502 work with my smartcraft that my 496HO is using??

Call procharger there right here in KC im sure they can help. don't run that motor again until you get that AZ crap out of it. There is only one person that can tune your pcm and that is dustin at whipple. there are a couple of guys at loto that do a lot of prochargers when I get there numbers I'll pm them to you

Yes to building a mag BBC 454, 502 or 500hp.

As far as the smartcraft goes, you will lose most of the advanced monitoring. The 496 uses an active PCM on the engine, high sample rate and lots of sensors. The 454/502 MAG MPI is a basic ECU system and is missing most of the sensors that the smart craft gets its readings from.

Why do I see someone yelling "F_CK!" and slamming their keyboard?