to gear or not to gear....
#1
to gear or not to gear....
I have the listed mods on my car and use as a daily driver. I love the car, but do not race it. I am thinking about getting a 224 cam later and want new gears now for the rear. Should I go with the 3.73 or 4.10. 2001 Trans Am WS6 w/M6.
#2
I'm pretty happy with my 3.73's.
Any lower wouldn't give the same power.
If it was my choice I'd go a bit higher, 4.10 or 4.30. Actually I'd make sure I didn't have to shift into 5th in the 1/4 so probably 4.10
I wouldn't pay to make the jump from 3.42 to 3.73.
So maybe try the 4.10's? They will only be a couple hundred RPM higher than the 3.73 on the highway.
You probably won't be more than 2500 RPM at 85. I think it'll be about 2300 or so.
Any lower wouldn't give the same power.
If it was my choice I'd go a bit higher, 4.10 or 4.30. Actually I'd make sure I didn't have to shift into 5th in the 1/4 so probably 4.10
I wouldn't pay to make the jump from 3.42 to 3.73.
So maybe try the 4.10's? They will only be a couple hundred RPM higher than the 3.73 on the highway.
You probably won't be more than 2500 RPM at 85. I think it'll be about 2300 or so.
Last edited by z98; 11-08-2003 at 09:24 PM.
#3
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I think you'll find quite a variety of replys to the 3.73 vs 4.10/4.11 comparison.
I have 4.10s. I have had standard automatic muscle cars with 4.30s, no overdrive. 75 mph @ 3500 rpm in a 440 big block is what I would consider unlivable. I traded those back then for some 3.73s.
I cruise on the hwy doing 75 @ 2050rpm. That is extremely livable compared to the prior scenario, and performance driving is great. 1st is still usable, although I do some 2nd gear starting. It is definately a quicker car with the 4.10's. I just didn't think the 3.73s were enough of a change to warrant the costs. Best bet would be to locate someone with both gears, and see for yourself. good luck with what ever you decide!
I have 4.10s. I have had standard automatic muscle cars with 4.30s, no overdrive. 75 mph @ 3500 rpm in a 440 big block is what I would consider unlivable. I traded those back then for some 3.73s.
I cruise on the hwy doing 75 @ 2050rpm. That is extremely livable compared to the prior scenario, and performance driving is great. 1st is still usable, although I do some 2nd gear starting. It is definately a quicker car with the 4.10's. I just didn't think the 3.73s were enough of a change to warrant the costs. Best bet would be to locate someone with both gears, and see for yourself. good luck with what ever you decide!
#4
Thanks guys, that helped me alot. I think you are both right. I will probably go with the 4.10s and see what happens. Like I said, it's not a racer, but just a daily driver. Of course even as a daily driver, I still want to "feel more power". That's what it's all about though, right? Thanks again for the help.
#5
With stock tires, an M6, and 4.10 gears, you'd be doing 2280 RPM at 85 mph.
3.42 - 1901 RPM @ 85 MPH
3.73 - 2073
4.10 - 2280
4.30 - 2390
4.56 - 2534
Looking at this, I'll definately be getting 4.10 gears if I get a new rearend.
3.42 - 1901 RPM @ 85 MPH
3.73 - 2073
4.10 - 2280
4.30 - 2390
4.56 - 2534
Looking at this, I'll definately be getting 4.10 gears if I get a new rearend.