Quote:
Originally Posted by Firefighter
I seriously doubt you will see a 55 HP bump from it's current rating. I could see maybe 20-25 HP more.
Now if it was an all new motor... This isn't the 70's they (any manufacturer) don't under build a motor by that big a margin. They get about 85% (SWAG on my part) of the power they feel they can throw a warranty on.
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How is it a 55 hp increase if the Roadrunner is rated at 444hp? I dont think another 20-25hp is out of the question with improved heads and cams.