4.10's or 4.30's... Need some help, which is best for me?

[Dark Knight GT]

I hve no idea how a predator or xcalibrator would help me...

without me searching what can a xcalibrator do for me??

It will allow you to program the ECU in your car to your liking. You can adjust the speedometer readings for gear ration and/or tire size changes. You can also adjust the ignition timing to your liking, and if you know what you're doing, you can adjust the fuel pressure to make more power, but unless if you know what you're doing, I wouldn't fool with that. You can also do things like adjust fan timing so that fan will come on sooner, which is what most do when running a cooler thermostat. You should be able to buy a hand held programmer, like the Predator or SCT unit for under 400 dollars.

As for the CAI, it all depends on what kind you're getting. I don't know much about the JLT cold air kit, but you would probably be best by getting a CAI kit that is made of plastic, and doesn't have a bend in front of the MAF meter. I have the K&N FIPK and I like it.

 

[KronicRacer]

oh yeah, drag radials, or super sticky tires are going to be a must with 4.30's

thats a quick route to a blown up stock diff.

before you throw on dr's or drag slicks keep in mind that you must throw in a stronger diff and 31splines, if you use the stickier tires in combination with teh 4.10 or 4.30 gear sets

 

[Jackie Chan]

thats a quick route to a blown up stock diff.

before you throw on dr's or drag slicks keep in mind that you must throw in a stronger diff and 31splines, if you use the stickier tires in combination with teh 4.10 or 4.30 gear sets

depends on how he is going to launch on sticky tires. my stock diff took a load of abuse before its demise. could go on the first pass or last 200passes

 

[big T]

I DID A SEARCH, and read all of the relavent threads on 7 different pages, but still have a few questions...

Heres a few specs...So the car is a 5 speed, its a vert so its heavy, and i'm well, slightly overweight . I have some heavy 18x9 chrome bullt rims with a 285/35 rear tire. The car will stay naturally aspirated, with long tubes, accufab 75 throttle body and plenum and CAI in the future. and probably not much else.

Heres a few things for consideration... The car is not a daily driver, its my weekend warrior. The car sees very little highway driving, with a few short stints on the hwys around town to get to where i need to. I dont take the car to the track very often, I might take it 1-2 times every 6 months. The car will see a lot of city driving and stop light racing. I really just want something to perk up the car and make it really really fun to drive around town. I'm not really concerned about hwy rpms.

is the benefit of having 4.30's over 4.10's worth it as far as the difference between the two when it comes to getting up and going. is 1st gear even usable???? is 4.10 the gear everyone goes with just because its the best gear for our engines and putting them in the rpm range? So, and suggestions?

Since u r running the heavy 18's and its a cv, id say run 4:30's to make up 4 some of the weight...if u dont mind a bit more shifting. Its safe to say that u'll gain a .10 in the 1/4 with the 4:30's over the 4:10's and with some decent tires...bfg kd's or nitto dr's.

 

[KronicRacer]

depends on how he is going to launch on sticky tires. my stock diff took a load of abuse before its demise. could go on the first pass or last 200passes

still on borrowed time.

 

[Jackie Chan]

still on borrowed time.

so is everything