Quote:
Originally Posted by Thunderbird123
I just placed an order on a Backdraft and wanted some input on a 427R or a 427IR. For the $12,500 difference is it really worth it based on your experience with your motors you guys have invested in?
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I would simply start reading the topic titles. Do a search, but it would have to be very generic. There are TONS of topics in this forum on different engines and different engine builders.
My experience with my Roush 427IR was that if I were doing it again, and the engine were not already in the car, there are equal or even better alternatives for less money. Roush support is iffy at best (perhaps OK if you are really close but absolutely no support long distance, I had to ship my car to them and it got nothing until we figured out that the altitude compensation portion of their tune was "null" (ie, no compensation, incomplete.) I got nothing from them for that. They've since switched sources for the DFI (Digital Fuel Injection) controller and some reports are that it behaves better but still need some TLC for true low-to-high altitude operation since the self-learning system doesn't really know how to do it.
Bottom line, lots of alternatives, widen your search.