4.10 or 3.73

[dSgMach1]

So I have an 03 automatic mach1 with intake and exhaust mods, and I wana go to the next level! So it's time for a tune and gears! Now do I do 3.73 or 4.10's I wana notice the difference obviously but I don't wana lose highway so I'm just lookin for some advice thanks guys.

 

[mach1]

I have 3.73's real nice. thinking of putting the 4.10's back in. At 65 mph in overdrive I see 2000 - 2200 rpm. Also a Mach-o-matic.

 

[mach1]

you may also want to put some pullies on.

 

[scotts99snake]

4.10 Don't fear the gear!!

 

[Timspony]

+1 on the 4.10's!!!!!

 

[modularmustang]

I had 4.10s in my SRA and now that im swapping in an IRS Ive had to get new gears again, guess what they are

+2 4.10's

 

[dsblk93gt]

4.10 or 4.30!

 

[Unrealford]

I have A AUTOMATIC and I had 4.10s They are really nice. I was running 2800@ 65 mph and I now have 3.73s If it weren't for the long rides to Carlisle and Myrtle Beach. I would have kept 4.10...
im at 2300@65 mph with 3.73s.. And still running 13.00 in 1/4

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[TNA99]

I love my 4.30 gears. The 4v motors love to rev.