I'm confused...
Simply turning off the overdrive on our trucks is enough to keep it from coming on. It's not like you don't have a choice about OD (like some vehicles). I know you can bounce it off the rev limiter with OD off and it won't automatically come on because I have done it by accident before (got excited in a race...). With overdrive off you can still make it up to about 125-130. I don't know of too many L's trapping 125 or better.
How bad does changing the tire size to simulate a 3.73 throw off the speedo, and even if it throws it off a lot it shouldn't affect the rev limiter. With OD on the truck wants to shift around 120. That said, what kind of times are you running to be clipping 120-125 in the 1/4 and therefore running into this problem?
I only ask because it sounds strange and you are probably the only person I've seen complain of shifting into OD right at the end of the 1/4.
Simply turning off the overdrive on our trucks is enough to keep it from coming on. It's not like you don't have a choice about OD (like some vehicles). I know you can bounce it off the rev limiter with OD off and it won't automatically come on because I have done it by accident before (got excited in a race...). With overdrive off you can still make it up to about 125-130. I don't know of too many L's trapping 125 or better.
How bad does changing the tire size to simulate a 3.73 throw off the speedo, and even if it throws it off a lot it shouldn't affect the rev limiter. With OD on the truck wants to shift around 120. That said, what kind of times are you running to be clipping 120-125 in the 1/4 and therefore running into this problem?
I only ask because it sounds strange and you are probably the only person I've seen complain of shifting into OD right at the end of the 1/4.