cartmill

iTrader: (3)

so we agree on the physics, we just have opposite terms.
and apparently we have a mexican stand-off on the final drive ratios. haha.

stockhatch

iTrader: (12)

LOL I hear ya. Ask any off-roader who uses "granny low". They can back my "backwards" terminology. Lower gears have bigger ratio numbers. Backwards as it seems, that is the way the rest of the world sees it too. It's not just me being silly.

Anywho, to the OP, I would do the trick someone already mentioned and count tire revs vs driveshaft revs to determine final drive ratio and go from there. I doubt there is a combo of transmissions and rear ratios that would account for your numbers being so out of whack, but determining your ratio is a good start.

cartmill

iTrader: (3)

i am with you here, but we're talking about the final drive ratio, not the gears in the transmission and the sequence in which they happen. i think that "L" is just the first and earlier gear that happens in the sequence of 1, 2, 3, 4...
there is a difference in the sequence of the gears of the transmission and the final drive ratio.

i dont know what kind of off-roading your buddies do, but i think they only call that gear "granny low" because of the over-all speed (the OUTPUT side...) and it's the lowest in the sequence of gears 1, 2, 3, 4, etc. and the one in which you can't go very fast (like a grandma)
everyone i know refers to the final drive ratio being "higher" or "lower" based on what's happening with the INPUT to the diff, not the output to the wheels.
see what i mean?

stockhatch

iTrader: (12)

Nope. Ask any drag racer what putting a lower gear in the car does and get back to me.

And read this.

cartmill

iTrader: (3)

jesus chrysler, i figured you would pull the only hit on google that explained it the backwards way.

also, excerpt from that site, which looks like a middle schooler created it:
"I don't how high ended up meaning low numerically or low ended up meaning high numerically, but they do. "

(no they don't)

stockhatch

iTrader: (12)

LOL. Well find some links to the forward way then. I can find you TONS of articles, thread posts, book citations etc that see it my way. How many sources can you provide for yours?

stockhatch

iTrader: (12)

And yes, some refer to lower gears as short, and higher gears as tall. It still follows the same principal though.

Tall = smaller numbers
Short = larger numbers.

cartmill

iTrader: (3)

okay let's just stick to Short vs. Tall!
we can save the confusion that way

cartmill

iTrader: (3)

this thread derailed severely.

stockhatch

iTrader: (12)

Ok. Saves me a bunch of citation work that way

stockhatch

iTrader: (12)

Yes it did. Sorry OP. Once you determine your ratio, please update so we can try to help solve your issue...

CASANOVA86

Well about the tach I gotta check cuz the owner who had it before me did say that he changed it but he didn't say if he changed it for a SC400 tach I gotta check that out. So then my car acting like this has nothing to do with having an auto ecu & the O/D light flashing on/off?

stockhatch

iTrader: (12)

No. My car was an auto that I swapped to 5-speed, and my O/D light flashes too. You have another issue.

cartmill

iTrader: (3)

i bet it's a sc400 cluster.

CASANOVA86

Yea I gotta find a SC300 cluster to make sure. BTW could it be 1 of the speed sensors cuz I had a guy tell me that they come with 2 speed sensors & that maybe 1 of them went bad?