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92GreyGT · 06-29-2009, 07:42 PM

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

06-29-2009, 07:42 PM	#1
92GreyGT 3rd Gear Member Join Date: Aug 2006 Location: Posts: 942	EFI 393 throttle body size question 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 __________________ 1992 Mustang GT 3375 lbs. w/driver DSS 331 AFR 165 heads Comp Cams XE274HR cam Trick Flow Track Heat intake Astro Performance Super T5 4.10 gears Best time 7.58 @ 90 / 11.89 @ 113 333rwhp 357rwtq