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Came across a old dig vid of me and a friends head/cam bolt-on 4.33s lt1...I let out at the 15sec mark he put it into 5th and keep going for whatever reason lol....
well its not like it gives a certain hp gain and i do not have a dyno before and after to show the diffrence just ran a car that was close and pulled it pretty good afterwards just a estimated guess for somebody to understand the diffrence