So,
We're talking Inertial load now. Like rotating mass that is forced to rotate faster and faster yet.
The factory 12.5" convertered TH400 inertial load is indeed very high. It would take a 10second car in the neighborhood of 38HP to spin that cast iron mass from 2000RPM to 6500RPM.
a 10" convertered TH400 would be about half the inertial mass.
yet these inertial loads are less than the 12Bolt Posi rear with rims&tires.
These inertial loads are not parasitic loads. Easily seen as energy storage like a fylwheel, while cruising.
BUTT, to your point, the Powerglide is the least transmission, then the Manual transmissions (not including flywheel) inertial load, TH350, TH400.
All out compete for fastest ET will cause a fella to consider a flyweight driveline inertia.
HIS
"tbdET/1xxMPH/1.xx 60foot/28"/3.54:1/10"/469 #48/Flat HYD/DualQ-Jets/Offyl/3xx0Lbs
11.00/123MPH/1.50 60foot/29.5"/4.10:1/10"/469 #48/FlatHYD/DualQuad/Wenzler/3250Lbs
12.00/112MPH/1.61 60foot/26"/3.31:1/10"/469 #48/FlatHYD/Q-Jet/Torker/3650Lbs
12.70/103MPH/1.71 60foot/28"/4.10:1/12"/469 #48/FlatHYD/Q-Jet/Torker/3950Lbs"
__________________
95 Towncar that needs more TQ.
Sold 2023: 12.24/111.6MPH/1.76 60'/28"/3.54:1/SP-TH400/469 R96A/236-244-112LC/1050&TorkerI//3850Lbs//15MPG/89oct
Sold 2003: 12.00/112MPH/1.61 60'/26"x3.31:1/10"/469 #48/245-255-110LSA/Q-Jet-Torker/3650Lbs//18MPG 94oct
Sold 1994: 11.00/123MPH/1.50 60'/29.5"x4.10:1/10"/469 #48/245-255-110LSA/Dual600s-Wenzler/3250Lbs//94oct
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