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Discussion Starter #1
I have a 1991 f-150 with a 5.0 engine and around 120k on the odometer.I have a 1989 5.0 out of a t-bird I want to rebuild and put in, it is a roller cam motor. If I use the roller cam and put some flat top pistons in will I need to change the computer, or anything else? Any other mod info will help.Thanks.
 

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Discussion Starter #2
What type of performance mods can you get away with before you need to mess with your computor?I have a 91 f-150.
 
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