So, as most of you are aware there were two types of GMR chains/gears:

- 1" x 3/8" pitch: 2.93, 3.29, or 3.69 (rated at 800 hp)
- 1" x 7/16" pitch: 3.52 or 3.74 <--(I think that is correct) (rated at 1200 hp)

My question: Does the 7/16" pitch chain require any further modification? In the GMR Race Trans catalog I think they said they had to machine the stator support for clearance?

"
The O.D. of the drive sprocket support (stator support) is

cut to clear the 1
9 wide x 7/169 pitch drive sprockets.
(Fig. 137) The modified part is shown on the bottom of
Fig. 137.
"
Thanks