How to raise govenor WOT shift on the cheap

[Schmucker]

I've got a 200-4R that I swapped into my '77 Corvette. It seems to work fine, but it upshifts at about 3500-4000rpm (I only drove it about 15 miles and it is in storage now). It isn't a special GN one or anything, it came out of an '81 Monte Carlo I believe. I would like about 5000-5500rpm upshift. I checked the archives. Changing springs would do it (where to get springs?) or lightening the govenor weights would as well. Changing to a GN govenor appears to be expensive. I don't really want to spend $100+ on this.

So, how can I increase my upshift to 5000-5500rpm cheaply? If removing material from the weights seems to be the way to go, can I please get a picture to help visualize where I should be removing this weight?

 

[85monte]

This info should help

Look here, this should be some info that will help you.

http://www.turbobuick.com/forums/showthread.php?s=&threadid=141799



Brian

 

[jakeshoe]

Yep,
reduce the size of the small weight on the governor, and remove the spring from the large weight.

If you ned pics posted of mine I can get them back up.

However I have the BRF valve body so my weights are probably smaller than yours will need to be.

 

[Schmucker]

http://www.gnttype.org/techarea/transmission/governor.jpg
Okay, I found that picture. I'm sure mine is the lower one. So what I want to do is remove the spring from the bottom weight (which would be the heavier weight) and then grind down the less heavy weight and make it a light weight, keeping the spring on that weight. I'd like to get lucky and only have to do this once, so am I looking to make that weight about as big as the GN Govenor weight?

What I don't like is that I won't be able to try it until spring, but I need to go in there anyways to change speedo gears as I'm rebuilding my rear end and putting in a little lower of a gear.

 

[77 cruiser]

or

You can also do it like this I ended up @ about 5800.

http://webpages.charter.net/77cruiser/Gov/Gov.jpg

I also ground a bit off the top of the small wt. to square it up a bit. Sorry I don't have any better pics.

Jim