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correct throttle body for 383?

Art Jett

Well-known member
Joined
Mar 25, 2004
Messages
366
Location
Azle Tx.
Corvette
1977 TPI 383 stroker, 700R-4/ 2002 6 spd.
Can someone out there point me in the right direction? I am putting a TPI system on a 383 w/performer rpm heads. Do I need a 58 mm throttle body or is the more commonly used 52 mm going to be big enough? I know that the 58 mm is not that much more expensive, so it would not be a problem to ask the supplier for it. I just don't want to go the extra if it isn't needed. I don't know if it would be bad to have the larger one if I didn't need it. Also, what size injectors should I request? I think they reccommend 24# injectors for my application, but I'd like to hear from one of ya'll that has a similar setup.
Thanks in advance.
Art
 

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