whats the stock size throttle body size?
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Joined: Jun 2002
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From: KEYPORT NJ
whats the stock size throttle body size?
i have just bought a 89 iroc z 5.7 TPI and would like to know what size is the stock throttle body. I am thinking of putting on a 54mm body. If someone could help me out it would be great.
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Joined: Jan 2002
Posts: 476
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From: webster, ny
think about how big a change it would be. 48mm-54mm....not too much, but you would gain some hp. i'd save the money though. you could get a cam and spring for the price of the 54mm tb and gain a hell of a lot more hp that way
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