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I am building a N/A, pump gas, 393 Windsor engine using a 69' block, DSS rotating assembly, AFR 205 heads, and a Comp Cams hydraulic roller. I am keeping the engine fuel injected and I can't get a straight answer from anyone on what size throttle body to run. I am going to use the Trick Flow intake for the 5.8 but they have two versions, one with a 75mm opening and one with a 90mm opening. Which one do I use? Thanks
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1986 GT-X303-289 heads-1.72 rockers-RG 4+1 Trans.
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agreed a box r with a 90mm throttle body. the motor is going to require a lot of air to feed it
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EFI 393 throttle body size question
