lmb00

going to a 200r4 in a 1964 chevy 2 wagon. has a 350 with a 332 rear. I was told the gears need to be changed to at least a 3.73 with this tranny swap

forcd ind

iTrader: (7)

Depends on what you want to do-the 200 will have a slightly lower 1st gear, try it first

RPM WS6

iTrader: (3)

You were told wrong. There is no specific gear requirement for any particular transmission; purpose and overall combo will determine best gearing.

Having said that, if you have a TH350 now then the current 1st gear ratio is numerically lower than what you'll have with a 200-4R - so you'll already have a more aggressive launch with the 200 even if you don't change anything with the rear gear at all.

96lt1m6

iTrader: (31)

I did a swap many years ago using a 2004r from a t350 and it was almost identical plus i gained an OD. The gear ratio i had was 3.42.
The 2004r is very similar to a 350 but has lock up and OD which is a big plus.. No matter what tranny you decide to use put the largest cooler on it you can find. I used my AC condenser after having it boiled out since that car had no AC it looked factory, great position and worked flawlessly.

2004r_________ T350
2.78____________ 2.52
1.57____________ 1.52
1.00________ 1.00
.67