2005-2008 4.6 engines

[2nd2nunn]

We have a customer that has had a Whipple 2.3 on his car since 3000 miles and the car now has 74000 miles. The car is also on 12psi and makes 514RWHP and the driver beats the hell out of the car. He has broken 3 input shafts in the stock transmission and since has upgraded to the TR-6060 and has also been through 4 aftermarket clutches. So the 05+ 4.6’s are a strong engine as long as they are tune correctly

With 408 rwhp and a good Brenspeed tune you have nothing to worry about. There are many Whipple and TVS cars out there on stock longblocks running 500 rwhp.

Because you are here in AZ., I would be careful of the brenspeed tunes. We have had a few cars come to the shop and been put on the dyno and their cars were detonating. They are not taking into account the air quality, heat and poor fuel we have out here.

[paysonpony]

Thank you all for your help and advise. I am looking forward to your Monsoon Madness Car Show.

Thanks again,
Keith Orr
RCMC - Pres