I drove around my buddy Mike Musto's B-Body with a 727 & Gear Vendors for a weekend. It was just too litlle of a good thing with that .78 to 1 OD. I wouldn't bother for that little of an improvement.

Then again I run an Extreme Automatics Stage 2 2004R with a 3800 rpm lock-up converter from Precision of New Hampton behind my 408 Magnum. It's the best performing transmission I've ever driven and has a 2.76 to 1 first gear and a .67 OD. Locking up the converter makes it seem like a 5 speed by dropping about 350 rpm in 4th. I painted it black and put a Mopar sticker on it for the purists.

Although if you have over 1000hp & 850tq, you would have to upgrade to a Stage 3 version.

200R4 3 (Medium).jpg200R4 5.jpg
1970 Plymouth 'Cuda #'s 440-6(block in storage)currently 493" 6 pack, Shaker, 5 speed Passon, 4.10's
1968 Plymouth Barracuda Convertible 408 Magnum EFI with 4 speed automatic overdrive, 3800 stall lock-up converter and 4.30's (closest thing to an automatic 5 speed going)