Literally every single dyno run ever in existence shows a TPI making more torque than a dual plane intake.
Runner length wins every single time as has been proven for a few decades now
You’re information is 100% wrong and that isn’t going to change now or ever for any gas engine.
Telling you right now, I ran the darn thing in a head to head kind of analysis and your data is wrong. Under 3,000 rpm the TBI makes more torque. I put plenty of seat time and miles on both setups and the loss of low-speed torque was easily noticeable. Since you believe you know so much, put the TPI on there.
Back in the FSC days another guy put TPI on his TBI 350, believe it was CCReddell.. He ended up pulling it back off and putting an edelbrock 3704 bored to 50mm with a 50mm TBI because he could not stand the torque loss of the TPI off-idle and in 95% of the normal driving rpm band.
I will also state that my 2", 50mm TBI had the throttle cam with a non linear progressive opening cam on the throttle. It pulled the blades open more slowly off idle and then quicker over 1/2 throttle. My TPI had an early style linear opening 52mm performance throttle body. It still took more throttle opening and thus higher MAP readings to get the TPI rolling along in normal driving.
Edit- I will also mention the old 83 probably had 500 passes in the 1/8 mile and 200 in the 1/4 on it. It was dead consistent with weather correction factor applied for atmospheric conditions. I won multiple bracket races with it, so much that some hated lining up next to it. The 60' and 330' slower times were definately noticeable with the TPI and stock converter with the vans 3.08 gears. I went from like a 2.1s 60' to 2.2s 60'. 1 tenth in the 60' is 2 tenths down the track to have to make up and it never really could catch up with the 60' loss. Best times on the TBI setup was 13.90s @ 101 mph. The best the TPI ever ran was a 14.1 @ 99 pre converter. With the converter I eventually got the TPI to run a 13.7 @ 99-100 mph. The converter knocked my 60' down to 2.0x fairly consistently.
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