Supercharger question?????????

[GaruMJ]

What do you think guys about install a supercharger of a 3.8 liter ford thunderbird and running 4.56 gears on a comanche ´90 I6 4.0 automatic 4x4.

we use our cars for this...

http://es.youtube.com/watch?v=ZI-n_vBVom8

[GaruMJ]

some guys are running the supercharger in their XJ but with 3.55 gears :thumbsup: and I am not sure how is going to work with the 4.56 gears on my truck. :D

 

any advise???????

[DirtyComanche]

Should work. Low gears won't hurt.

 

Try it and report back.

[GaruMJ]

Should work. Low gears won't hurt.

 

Try it and report back.

 

I forgot to tell you I am running on 31´ all terrain and I don´t want to jump to a bigger tires.

[DirtyComanche]

It'll be fine.

[SoloCamo]

As long as you do supporting mods for the S/C such as larger injectors, cooling, etc I don't see there being a problem.

 

4.56's with 31's isn't something I'd exactly want to daily drive, though. However, for this purpose it would probably be great. Maybe 4.10's would be a better choice though so you aren't shifting gears as much while climbing and will keep you in the power band longer.

[BLHTAZ]

Supercharged with 4.56's & 31's will go about 50 MPH in 4th gear at 5-6000 RPM...not a good combination :???: .

 

IMO - 3.73's would be the gear to go with for that set-up...if, as you say, you are not going to go bigger.

[GaruMJ]

Supercharged with 4.56's & 31's will go about 50 MPH in 4th gear at 5-6000 RPM...not a good combination :???: .

 

IMO - 3.73's would be the gear to go with for that set-up...if, as you say, you are not going to go bigger.

 

 

I am running 4.56 actually with the stock motor with just magnaflow, K&N intake sistem and 2001 intake maniful, and I think it is not bad, it doesn´t go to 5000RPM maybe 2000-2500rpm or so.

and that´s what I was thinking if I add a supercharger it could rev alot faster and that´s what I don´t want.

and the good.....I have a 3.73 gear set as spare, front and back. :clapping:

[BLHTAZ]

OK...I was exaggerating a little bit on the RPM's, but you get the point ;) :D .

 

I run 4.56's with 35's, 4.0L, AX15 and it is plenty of gear for that. I could actually run 37" tires with the 4.56's and have no problem as they seem to be a little too much gear for the 35's.

[Jacobs]

Supercharged with 4.56's & 31's will go about 50 MPH in 4th gear at 5-6000 RPM...not a good combination :???: .

 

IMO - 3.73's would be the gear to go with for that set-up...if, as you say, you are not going to go bigger.

 

That seems just a little off, I'm calculating more like 119mph in overdrive at 5k rpm. :???: With 4.56, auto, 31's. Of course the supercharger makes no difference in the speed per rpm.

[BLHTAZ]

Supercharged with 4.56's & 31's will go about 50 MPH in 4th gear at 5-6000 RPM...not a good combination :???: .

 

IMO - 3.73's would be the gear to go with for that set-up...if, as you say, you are not going to go bigger.

 

That seems just a little off, I'm calculating more like 119mph in overdrive at 5k rpm. :???: With 4.56, auto, 31's. Of course the supercharger makes no difference in the speed per rpm.

 

:yes: :yes: :thumbsup:

 

OK...I was exaggerating a little bit on the RPM's, but you get the point .

 

I run 4.56's with 35's, 4.0L, AX15 and it is plenty of gear for that. I could actually run 37" tires with the 4.56's and have no problem as they seem to be a little too much gear for the 35's.

[Jacobs]

right- well let me know when you make up your mind, then.

[DirtyComanche]

People make sure a huge deal about gears. Stop bothering. It doesn't freaking matter if it's 2200 or 2500 rpm. Which is about all the difference you'll see.

 

But you might lose a tenth at the strip! Woohoo... Yeah...

 

 

(Remember, this is my opinion, and no, I don't have any professional training in anything related to a jeep)

[BLHTAZ]

right- well let me know when you make up your mind, then.

Who...?? About what...??? :dunno: