TH350 swap for 700 or 200?

[88v8]

This TR6 that I flagged
http://forum.britishv8.org/read.php?3,58706
with the 350 SBC and, I assume, TH350 (the seller bought it as 'an investment' and doesn't know what box it has except it's 3-speed) would there be major problems converting it to a 700R4 or 200-4-R?

What I can see..... 700 is the same length as 350 but rather heavy. Mounts are the same.
200 is same length but mounts differ.

Both 200 and 700 have their fans and detractors.

If this is not a major swap, perhaps I should go look at the car.

Ivor

[BlownMGB-V8]

My understanding is that it's almost a bolt-in swap. You have to wire it for a TCC switch but it can be fully manual.

The 700r4 is common and easy to find. The 2004r has better gear ratios for a sports car.

Jim

[DiDueColpi]

What Jim said  X2

[KadettB]

200-4R is same length as short-tail TH350. 700R-4 ratios look bad on paper, but everyone forgets the torque converter. The 700 drives NO worse than any other automatic, and thanks to it's excellent ratios and lockup converter, it drives better when you get the converter stall and throttle valve cable adjustment right. The only reason to ever choose anything else is if you're making over 650 foot-pounds. Then you need a 4L80E. It can be built to hold over 1500