Cascade Crew

fiveoformula · Posted: Tue Jul 08, 2008 10:15 pm Post subject: good shop?

might be ordering a ring n pinion set, anyone know a good place to have them put in?

fiveoformula · Posted: Wed Jul 09, 2008 12:13 pm Post subject:

im still debating.... 3.42's or 3.73's?? someone help me out... its a 305TBI automatic... i drive it everyday, so it needs to stay streetable.
i guess my question is, are the 3.73's to steep?

Dewey316 · Posted: Wed Jul 09, 2008 12:21 pm Post subject:

3.73's or 3.42's should be fine. with the auto, you would probably do fine with 3.42's, but 3.73's aren't going to be too much either.

fiveoformula · Posted: Wed Jul 09, 2008 12:27 pm Post subject:

yeah? i know this has probably been posted before but with 3.73's what RPM would i be cruising at highway speed in O/D?

blue89 · Posted: Wed Jul 09, 2008 1:36 pm Post subject:

Why is everyone afraid of tall gears? 3.73 at a minimum. My 4.11's turn my V6 at 2700rpm on the free way with 25.6" wheels. With the overdrive in the auto its completely fine to run tall gears.

aaron_sK · Posted: Wed Jul 09, 2008 1:49 pm Post subject:

3.73's + T-56 = 80mph at a little under 2K. Get down and Boogie!

With your 700R4 I'm going with Dewey. Try for a 3.42 or 3.45. Cruising speed wont be your problem (2500rpm at 75mph), but getting out of the hole with a 3.07 first and 3.73's is a little wierd.

fiveoformula · Posted: Wed Jul 09, 2008 2:13 pm Post subject:

okay thats what i thought. since the first gear is so short in a 700R4 anyway. i wouldnt mind going to a T56 someday but its not in the cards yet lol
thanks for the input guys!

fiveoformula · Posted: Wed Jul 09, 2008 2:16 pm Post subject:

aaron_sK · Posted: Wed Jul 09, 2008 2:42 pm Post subject:

His V6 is built to rev a lot higher than your V8, so his shift is gonna come a lot later than yours either way.

Twilightoptics · Posted: Wed Jul 09, 2008 3:42 pm Post subject:

3.73 are perfect. 3.42 aren't going to net much change over 3.23.
I've run the 3.73/700R4 Combo personally.

25" tall tire, 3.73, .7 (700R4 OD), 60MPH = 2100RPM.

4.11 wouldn't be too tall for a .7 OD.

I've got a .5 OD and went with 4.33.

fiveoformula · Posted: Wed Jul 09, 2008 3:46 pm Post subject:

hmmm well i am going from a 2.73 gear. im gonna try and stick with the 2 series carrier i have now.. any of you guys think a 3.73 ratio will have a better 0-60 than a 3.42? i know it should in theory...

Twilightoptics · Posted: Wed Jul 09, 2008 4:57 pm Post subject:

rjmcgee · The Hammer Joined: 08 Jan 2004 Posts: 2328

fiveoformula · Posted: Wed Jul 09, 2008 6:47 pm Post subject:

i was planning on going with the thick gears and just bolt those to my 2 series carrier... but thats a good idea with the spacer because id like to upgrade to an LSD carrier when i have some more in the bank... and that would be good since i wouldnt be limited by the 2 series carrier.

anyone have one of those spacers laying around?
because i can get some 3.42's right now for a good deal but there for a 3 series carrier

Quasi-Traction · Posted: Wed Jul 09, 2008 8:53 pm Post subject:

http://store.summitracing.com/partdetail.asp?autofilter=1&part=MGR%2D075050&N=700+115&autoview=sku

$45 for a motive gear spacer. Depending on how sweet the deal is on the 2 series 3.42's, might be worth the plunge.

I'm not 100% sure but you might need pinion gear shims so you can set the proper backlash, especally as its a new ring/pinion.

fiveoformula · Posted: Wed Jul 09, 2008 9:01 pm Post subject:

haha i just looked that up on summit to lol
i cant tell if its for 2 series to bolt 3 series gears or 3-4... or does it work for both?

Twilightoptics · Posted: Wed Jul 09, 2008 9:12 pm Post subject:

It's going to cost you $250-300 in labor to install a new ring/pinion.

It's going to cost you about the same for someone to install a Posi later on.

If you had a new posi it wouldn't cost you any extra to have them install it.

I suggest you save your money and do the ring/pinion and posi at the same time.

Twilightoptics · Posted: Wed Jul 09, 2008 9:14 pm Post subject:

Dewey316 · Posted: Wed Jul 09, 2008 9:15 pm Post subject:

fiveoformula · Posted: Wed Jul 09, 2008 9:16 pm Post subject:

i kinda figured if i had someone set the pinion depth on the new gear ratio i want now, then when decide to swap in a posi then i get a 3 series carrier and all i have to worry about is setting backlash, i wont have to remove the pinion... right?