Will it fit? Yes, with some new holes drilled in the flexplate for the smaller bolt circle of the 300 converter. Will it last? Maybe a week, maybe less behind the big torque of the 455. The 300 trans was just not designed for that kind of torque!
Newbie
Will a 73 225 455 fit up to my 65 lesabre 300 tranny and gears
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Will it fit? Yes, with some new holes drilled in the flexplate for the smaller bolt circle of the 300 converter. Will it last? Maybe a week, maybe less behind the big torque of the 455. The 300 trans was just not designed for that kind of torque!
Steve B.
67 GS 525 Buick Stage IV
66 GS Convertible
65 GS HT
63 Riv
02 Subaru WRX Turbo
03 Ford Cobra Convertible (Factory Supercharged)
yeah, the TH-300 was never noted for it's durability.
if you're going to do a big block swap, you'll want a TH-350 behind it at minimum. 200r4 gives you an overdrive. TH-400 would be pretty much indestructible.
The way to crush the bourgeoisie is to grind them between the millstones of taxation and inflation.
Vladimir Lenin
Government schooling is about "the perfect organization of the hive."
H.H. Goddard, Human Efficiency (1920)
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