I want a 6 speed trans, it will help me keep my revs up with my semi BP motor, also due to the huge variations in events i do it would come in handy. some events i do i'd be lucky to see 70mph in, others i would like gearing to be able to do 170mph.

 

You people do realize this is going to be for a street driven 20B right? it will have a much better torque curve then a 13B and probably act similar to a V8..


I don't think kurgan cares about a 6speed, it is the fact that the T56 is made is a stronger variaty(sp?) They usually hold around 700-800RWTQ.. where the T5 temac is maxed out around 400RWTQ.


BTW those TQ #s are from the manufacures

 

Zach, you're dead on. It would be nice to have about a .53 6th gear (which they make) in a T-56 so I could do 80 mph on the interstate at around 2000 rpms But I don't really care about the 6 -speed... I've driven them in my dads WS6... its kinda weird to get used to I just want something that is streetable (not a geforce) relatively inexpensive (not a geforce) and can handle the rwtq that I'm going to be putting down.

 

get a wide radio Ford Toploader, those are rated for 900 lb/ft. (The close ratio boxes are 1000lb/ft!) Granted it's only four gears, but, hell, you have a 20B.

 

how about the quaife???

 

there used to be a link on the "links" section of the main page for this site... it had info on 20b swaps for FC's and a machine shop that made custom "adapters" for a t-56.

not much help to you all... but maybe someone has the link? (i didnt bother to read much of this thread)

You'll also need a form of a tranny crossmember... etc... you can pick up info and parts from grannys... they have info on the lt1/t56 FD swaps... (not that i approve of this swap on an FD) you might be able to contact them and get a machine shop that will have the t-56 "adapter"

http://members.tripod.com/~grannys/3...x7chevyv8.html

oh, and the t56 is quite nice to the lt1 / ls1 people. Most people will powershift (everyone knows this term, correct?) in excess of 600ft/lbs of torque, its clearly a great match to the 20b.

 

why not use a 14speed truck box and bolt the diff straight to the back of the trans

 

the T45 is a stronger tranny than a T5. I have the T45 in my 97 Cobra, and its rated at 305hp and 300ftlbs tq stock.

The 3550 Tremec is a VERY good transmission as well. I have plans for this to go into the cobr should i grenade the T45.

 

So is the WC T5.

 

Has anyone considered the Richmond 5 and 6 speeds? I believe the 5-speed is around $1800 and the 6 is around $3200 through JEGS. I'm pretty sure custom ratios are available. Standard H pattern sychro box. I'm sure an adapter doesn't currently exist so it'd have to be fabricated.
Michel

 

Can the Richmond be had with a compatible bell housing is the question next.

What about hanging the transmission out back ala C5 style? you wouldnt need as heavy duty adapter plate and alow for retaining the stock starter (perhaps). Of course that would require a floor pan adjustment to fit the tranny out back Plus if your running a 20b that might help rebalance the car. Not that I feel the overall handling would be hurt that baddly.

Just a thought to concider.

 

I'll just fit a C5 IRS and transaxle on my car and let you all know how it works

 

American Iron transmissions are not sold with bellhousings. You're supposed to bolt it to your existing bellhousing or scattershield.

Bit of a problem when there IS no existing bellhousing or scattershield, isn't it?

 

Uh... yea that would be a problem

now how do we cut one off a T2 tranny and blot one up.....

 

What about a custom bellhousing/scattersheild??? I always hear the v8 guys talk about them. What if we could find a skilled tranny shop to fabricate one?

Does anybody know what NHRA (there rules seem to be the most stringent) dictates to be a safe bell housing? I'm think 3/16" or 1/4" steel plates welded together to create the bell housing?

Oppinions....

Ryan

 

Sounds like a good idea. the question now is will it be affordable?

 

How many people are IN for SURE on this if we get a machine shop to do it? I KNOW I need a stronger tranny and would definitely be in for this... I want to pick up an aftermarket T-56 and have a bellhousing made for it to use the stock clutch hydraulics. I dont care if I have to swap out to use a T-56 clutch (input splines are different). I AM IN ON THIS. Does anyone want to make the iniciative and start working with one of these places.... I think if we get 5 guys that say YES, we have a HIGH chance of having it done.... I'd rather have it done by a place with CAD and CNC abilities... which doesn't exist around here, otherwise I would do it. I'm sure someon will have to take their car and the tranny to a shop for a while to have it made... so, anyone that's car is down, or they can do without it for a week or so, I know I'd be grateful. I guess we just have to decide on a tranny that ALL of us want. Right now, I'm obviously leaning to the T-56 because I love the .52 ratio that is available for 6th gear.... that would put me at 2100 rpms at 80 mph on the interstate... the other 5 gears I would have geared for 1/4 mile action.

 

Afforbadle for who?? We are talking about a $3000-$4000 SALVAGE motor and attaching a $3500 transmission to it. This isn't exactly a project for the faint of heart or wallet.

 

I think anywhere from $350 - 600 is acceptable... but of course, I'd rather pay 18 dollars.

 

TII bellhousings bolt on.

 

How bout a Jerico?

 

I find the gearing in a Rx-7 tranny to be much like that of a light truck, really short 1st gear, and a barely longer 2nd gear, then 3rd is really long, a tranny from a light truck like a Dakota v-8 would probably be a good choice although the throw of shifter would leave alot to be desired..Max

 

I currently have someone working on the adapter plate/bell housing/starter for the tremek tranni now.


Here in Fairview Heights IL.

 

Would it be worth a call to Downing, Spencer, or one of the pro drag drivers to find out what they did? No need to reinvent the wheel, 'er bellhousing. .02 cents.
Steve C.

 

Cam's GT car has a sequential Quaiffe in it. I'm not sure, but I think Mandeville created his bellhousing.