454 460 horsepower swap into a 1987 V10 with 700r4

[NickTransmissions]

I don't think a 700R4 can handle the torque that a 454 will produce. I would get a Turbo 400 instead. And with tires that big, you are going to have to use much deeper gearing. Maybe around 4:10, or else 1st gear will be much too tall.

Mike

If built correctly, the 700R4 can handle big block 454s assuming they aren't putting out more than about 550TQ...I know this for a fact as appx 10% of all my 700R4s have gone into big blocks and they've held up just fine...In stock form, I'd not recommend sticking a 700 behind one but my base 700R4 rebuilds aren't strictly stock and only need a couple things beyond what I already do to handle one (Sonnax smart shell, 8 or 9 clutch 3-4 stack being the main mods). I've also used five pinion gear sets from 4L65Es in some of those builds but not others as the 4-pinion sets are actually more resilient than most realize.

Once you get north of that ~550-575 neighborhood in terms of torque and/or HP, then it's time for a 4L80E...