Has anyone ever seen a GM power glide 2 speed used in a TRS application. JOHN SR

I have not but i have seen a b&m 2 speed in front of a #6 drive,that was a long time ago.

I can't imagine that a trs is going to like the torque multiplication of a pg.

Ive also seen the 2 speed trannies in front of a #3 setup.

I just don't see the need for it though for the average pleasure boat, especially a TRS setup.

Any boat will only pull so much prop .Most don't care if there is a "lower gear"...2 speeds do work in top fuel drag boats ,however

I had a B&M on a #3. The current owner in on OSO here somewhere. As Mild Thunder states, wasnt really "needed" for normal operating. Where it really shined was around the dock & no-wake zones.

There's a guy I talked with a while back on here that has a B&M setup with a TRS. It's a Chrysler torqueflyte though. Here's the post. Has several interesting pics in it. Screen name is killfast1. Pics are on page 3.

http://www.offshoreonly.com/forums/d...s-neutral.html

Merc had a 2 speed trans/ Bravo setup 12-15 years ago and it was fantastic. It didn't catch on though; boat builders were not willing to give up the foot+ of cockpit space that it required.

I have powerglides in my boat built to handle around 1200 to 1500 HP. Similar to a sprint car they dont use torq converters. Reason behid there use is engines are to be turbocharged. Radicaly turboed engines with lower compression (7 7.5 to 1) big prop need the lower gear to get up on plane turbo spools up and your gone.

I remember they were used in offshore racing boats on the course. The idea was for the tight corners, you could "down shift" and keep the RPMs up to cut the buoy tighter, then straighten out at full revs and throw it in high, and it cut time off re-spooling the engines with big props. Seems like one of the old offshore racing sanctioning bodies outlawed them back then as being an unfair advantage. I wouldn't foresee a use on pleasure boat though.