69 N.O.X. RATT

After breaking my 2nd Richmond ROD I am looking for a tranny that will take more power. I am making close to 800 HP now on NOS (and plan on a little more in the future) and would like to be able to race this car every now and then. I am leaning hard towards a G-Force, but they are $5500.00 new :U I guess if you want to go fast you have to pay.

I have also considered a Keisler prepped T-56, but do not know if they are up this kind of power.

542C2 (Steve) sure makes the G-Force tempting after talking to him.

Last thing, the tranny needs to be at least a 5 sp, I still want to be able to take it on the freeways to get to car shows.

Schmucker

How strong are the Viper T56s?

Glenn454

Get a muncie :lol: Man, I can't believe you broke 2 6spds.
Have you looked at the new viper T-56? I think It would hold up.

WashingtonRacer

http://www.standardtransmission.com/BW_T-56.html

Look they are cheaper than the ROD

epylant

If you've already broke two RODs, the T-56 is a gamble at best. What exactly did you break in the two Richmonds?

redvetracr

I didn`t think you could "downshift" a G-Force!! or a "liberty"
...redvetracr

Gordonm

I have been to G Force transmissions in Annville Pa. The shop is in the middle of nowhere but a quaility operation. They had a bunch of Nascar transmissions in the shop for updateing. They sure looked stoudt to me. They will build you just about any kind of trans you want but they are not cheap. http://www.g-forcetransmissions.com

Corey_68

Stock rating is 550lbs of TQ, it can be built stronger though. :yesnod:

69 N.O.X. RATT

I had synchro problems with the first and although I have not had the tranny apart I am 99% sure I broke 2nd gear in this one. The G-Force GF-5R is a clutch assisted 5 spd, and it will down shift, a Liberty will not.

427Hotrod

Well...for sure the G-Force can handle it. Once you get it apart we'll know more about what happened for sure. Will it move at all? Or is it just second gear that's dead?

The G-Force is based on the same design as the Nash/Richmond. I'm not sure, but I would imagine the centerlines of the main/countershaft are the same. That's one of the key design issues to trans strength. I would still investigate if G-Force could sell you parts to upgrade it maybe. I'd also call Richmond and see what they have. The design is still good, the synchros are basically Super T-10 stuff, maybe you just need stronger gears/shafts?. Easy to change on the Richmond.

Did I read something a while back that Jerico was making a 5 speed? Their Top Loader 4 speed based designs are the std. of the industry.

I know Steve and I discussed this a long time ago when he was deciding on his. The gear materials in the G-Force race trans are ten times stronger than what Richmond uses. No slam on Richmond...just different design purposes.

I've driven a clutchless Jerico in a 7500 rpm street Mustang and it's a blast. But one of the keys to most all of these is to have a clutch that slips on the shift. Even Jerico will tell you that clutch that doesn't give a little will break even theirs. The trick is to get the right amount. You and I are probably near the stage where we're going to need to look at alternative clutches to keep this stuff alive. And the shop I deal with has a mid 9 sec N/A LS1 Camaro with a Jerico. They are about to install a little Nitrous and are looking for 8.60's with a 4 speed!

Keep us up to date with what you find.


JIM

69 N.O.X. RATT

The car will move in 1st and not make a bad sound, but when it goes into 2nd it starts to complain. I have talked to Richmond in the past and they had nothing that would help. I will recontact them and see what is up. If I go with the G-Force I wil need to change the gears to probably a 3.07. That would give me a 3.80 in fourth, good for 140 at 6500 with a 28 in. tire. That is where I would like to end up.

I have also talked to a few of the high performance tranny shops in the area and they know of nothing to beef up the ROD.

If I go with the G-Force I am considering swapping over to the Hemi 18 spline input shaft, this is somethinkg G-Force reccomends. That would require sending the clutch back to Centerforce for a swap on the spline count.

It will be interesting if our Centerforces hold up to the power we are going to throw at them. Do you plan on getting your on a chassis dyno Jim?

pillowmeto

T-10 four speed by borg warner it was put in late C1 and early C2 vettes, very stong, i know of them in 1000hp+ cars. I dont know much about the super T-10 That ended up in some late model C3 and early 80s F bodies. Ebay always has a few good T-10s for 150-300 dollars. They are cheap for what you get. A rebuild kit would put you at 300 bucks. Also most performance shops will probobly get you a new one for 2000-3000 depending. Also a used low miled one in great condition is an easy find at about 1000 bucks. Thats that trans id like to put in mine when i pull the 350 turbo. Now thats gonna be a hrd project but worth it.

MAtt

edit
I just noticed you wanted atleast a % speed, well you can change the gears in the T10, i belive you can get about .75 or .80 4th gears, thats higher than any 5 speed, but they normally have 1.00 gears in the top, which is close to most 5 speeds .95 or .97 I would definitly try a T 10. Its a great deal for the price, and i highly doubt you could break it. I belive it also the nascar standard if that helps change your mind.


[Modified by pillowmeto, 2:18 AM 8/6/2003]

WA 2 FST

I would not bother with the T56. Seen too many of them break in mildly modded C5s, and the Viper one is stronger b/c it has a lower numerical 1st/2nd gear...not b/c the internals are any better. Heck, I'd take my old Tremec TKO in my Mustang (that easily handled 600+RWHP and a sintered iron clutch setup ... can you say "abuse"?) over a T56.

Best bet is probably the G-force with the kind of hit you're going to have with the nitrous and assuming you're going to run slicks.

Speaking of the Centerforce clutch... if you run slicks with this kind of power, you can kiss it bye-bye. You're into sintered iron disc territory for sure. You might want a little slippage on launch, but you want that thing to grab hard on upshifts, or any clutch will die a quick death. I'd put a Ram 900 in that bad-boy. It can be driven on the street with no problem, but it takes some getting used to from a standstill.

74 vert

http://cgi.ebay.com/ebaymotors/ws/eB...category=33733

I ran across this and they say it will handle 850 HP!

Opps, 900HP and 850 ft-lbs of torque!


[Modified by 74 vert, 8:18 PM 8/6/2003]

dually4wd

You may also want to look at a Jeffco. It's a Lenco-type planetary setup, but I believe the Jeffco is down-shiftable. I think they are also in the $5k range. I'm a little worried now because I was planning a Richmond for my 540, but I just might go the Jeffco route myself.

69 N.O.X. RATT

I am familiar with the Jeffco, in fact have a freind that has one, but they will not fit our cars without major surgery. I have also seen the tremecs

Thanks guys

dually4wd

Are we talking clearance for the shift towers or the entire tunnel?

burners

Jerico also makes a 5 speed. The are pricey as well but that's what you have to pay for high hp durability. http://www.jericoperformance.com/


Oooo, cool. http://www.jericoperformance.com/4.html and a lot of gear ratios to choose from.

Matt Gruber

inspect the shock springs in the clutch disc. Are they bottoming out? Are they too stiff?
What is their torque rating?
They are critical to absorb driveline shock. :smash:

GrandSportC3

There is a Mustang that runs 9.15 with a Tremec TKO transmission...
They are only rated 525 ft/lbs of torque.. but can actually take much more...