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I just got me a 1990 Swb chevy truck to play with,trying to decide which motor route I'm taking.So how much horsepower have you been able to support with a throttle body injection?the truck has a 350 in it and I have a complete running 454 engine with tbi also. What I'm wondering is if I build the 350 up if I run the throttle body off the big block what would be needed To tune it?