Depends on how much highway driving you do. IIRC, the 3.55's will be better on gas mileage (duh) than the 3.73's. But the 3.73's from what I've heard really wake these cars up.
For my money and since the bird will not be a daily driver I'm going with a 3.73 trac-loc unit. I don't really care if it kills the mileage. I've got to do something to compensate for the 95 motor, lol... Oh and before I forget I think know you have to change the speedo gear in order to keep it accurate based on the ratio you go with, so keep that in mind as well.
Yes, the 3.55's would be a definite improvement over the open 3.08's your car probably has now. I guess the debate is what plans do you have for your car in the future? Is it going to stay mostly stock, or going w/ a PI swap or something to that extreme?
If you plan on upgrading a bunch of stuff then I personally would go w/ the 3.73 trac-loc. I would not want to spend all that money on a 3.55 TL + setup/install fees just to replace it a year later w/ 3.73's. Not real economic. I'd say do a quick search and see what other guys have done.
With the 3.55s I get 26 mpg hwy running 80-85 mph at 24-2500 rpms. At 70 it runs at 2200 rpms. They work for me since I spend some time on the hwy. They also help this car get up off it's fat @ss compared to 3.08s It really just boils down to what you wanna do with the car. If you can get the 3.55 center section cheap and it's a trac-lok I'd do it since it just goes back in.
Yes there are other threads on the subject, but I haven't found one that addresses both at the same time.
I have a 1996 Mark VIII.
It is tuned with Quarterhorse and has dual cat back exhaust which has made a difference up top/on the highway for sure.
Around town though, it is still...
Not sure if any of you have seen this, but this would make the rear hub swap much more affordable. I was going to re-drill my purchased hubs, but @99.95, I'd rather have new with zinc coating.
Maybe I'm just dreaming here, but that's why I'm asking. I've been driving my dad's '99 Explorer for the last few days and I really love it, specifically the tranny. The five-speed auto does a great job of keeping the SOHC 4.0L V6 in it's powerband, and it is sweet to get on it and a shift only...
I was wondering who uses overdrive (O/D) when driving around town (speeds under 55). I am always flipping the O/D button depending where I am driving. Does it cause wear to the trans. if the O/D is disabled for extended times. At constant highway speeds I always enable the O/D.
When accelerating then letting off the accelerate Im getting a slight clunking from the rear of my car, it's mostly when the car is cold, sounds like something is knocking back and forth in the trunk area, haven't got a chance to get her on a lift yet. Not sure if this is a problem people run...
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