03-05-2010, 12:38 PM
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Senior Club Cobra Member
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Join Date: Nov 2001
Location: Davis,
Ca
Cobra Make, Engine: ERA 427 SC #004 (Original ERA?)
Posts: 561
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Not Ranked
Quote:
Originally Posted by madmaxx
Roush makes three versions of the 427, the 427R - 550hp, 427SR - 520hp and, 427 S = 500hp. The difference is in the cams and intakes. You do not want the 550hp 427R sure you get the hP at 5800 rpm's, do you drive around town at 5800 rpms? no you want the SR which is what you have because it gives you low end torque, that is what you feel not horspower. Dyno numbers can also swing 25% based on temp, air density, dyno machine etc
As far as the name plate mine came with the exact dyno numbers, engine number and even installer name.
less than 1% on this forum can manage 400hp, you guys crack me up, I want 600 hp etc, heck get a nascar engine they are 800 hp at 8000 rpms, you would have to drop the clutch everytime you left a light to prevent it from stalling.
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Yep, I have found that I run out of talent long before I run out of horsepower! 
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Drive it like you stole it!
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