Quote:
Originally Posted by bubela
Based on my on/off years of research, I think the Roush small block 427r would be an ideal engine for me with around 550hp and 535 tq. I just hope it’s enough. Does anyone have experience with this engine? Or think there is a better choice of engine?
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My Shelby Cobra (CSX4005LA) had the engine you speak of. Mine was the fuel injected version (427IR) and I had lots of problems with the fuel injection system but no problems with the engine itself. Lots of folks out there (some of them here) make an equivalent for less money though.
That engine will be more than enough for a Cobra. The engine was happiest operating at higher RPMs, so I ran in a lower gear at higher RPM to blow the cobwebs out. It would have been much happier on the track than on the street. For that reason if I were to get another Cobra it would be the small block version (CSX2000 based). The 289 (302) operates quite well and is a better match for the street car's power demands.
Note about the 427IR: Mine was a former generation that used the Accel DFI controller. If you're looking for fuel injection avoid this generation at all cost. It will not perform at altitude (well mine did after nearly $3000 of tuning, but Roush never got that even though I offered if they'd split my costs.) They later changed the fuel injection controller to another manufacture (FAST?) but there hasn't been much if any feedback on how that system works. But like I said, if you're looking there are equivalent builds for less.