y2khawk

iTrader: (5)

OK let's hear it

I know my T56 won't last forever.

I'm looking at built 400's right now, but would like to add OD to it. I drive my car ALOT on the street. Weekend "outings" can end up being 200 mile nights without much effort. And blasts on the highway are not uncommon.

Now, with all the goodies, converter and OD i'm looking at a good chunk of change going w/ a TH400.

I can go with a clutch type Jerico, down-shiftable, setup the ratio's i want and get 4th as my OD. The bolt pattern is such that i can get a real bellhousing in there and have room for a real clutch. I'm sure RAM can build me something <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

I'm not concerned about tearing into it every year, i replace clutches about as often as i change oil sometimes.

I just need a trans that repeatable and can hold 900+ lb*ft at the motor.

sited12

Check out the price for all that for the Jerico and then check the price for the TH400. The 400 is alot less. Plus there is the debate right now that the TH400 will run faster than the Jerico. From the arguements i have seen they are right. But just check on the price first cause i heard its rediculously expensive.

GeorgeC

IMHO, the TH400/GV OD would be the most trouble free setup. A properly prepared TH400 would be absolutely bulletproof. You could literally put it in and forget about it.

y2khawk

iTrader: (5)

Well

The standard DR4 is based priced at $2650, no cost to add the downshift capability.

While a built 400 can range from $1300 to $1500, add some coin for the converter. Then the OD is another $2k.

So the jerico will end up being $3500 with the bellhousing, clutch, shifter and trans.

While the 400 and OD is gonna be alittle over $3k with the shifter, OD, converter and trans.

Doesn't seem to unreasonable either way.

Patrick G

iTrader: (14)

OK, this is WAY out in left field, but it's been done on turbo cars making BIG power...treat the 3 speed TH400 like a 2 speed powerglide with an overdrive. That means running something like a 2.73 gear. Now before you laugh, look at the ratios.

Powerglide with 4.10 gears:
1.76 first gear x 4.10 = 7.22 starting ratio
1.0 second gear x 4.10 = 4.10 finish line gear

TH400 with 2.73 gears:
2.48 first gear x 2.73 = 6.77 starting ratio
2.75 first gear x 2.73 = 7.50 starting ratio
1.48 second gear x 2.73 = 4.04 finish line gear
1.0 third gear (equivalent to a .68 overdrive)

The gear vendors idea is OK, but a 4L80 would be a more complete kit and weigh less (if you want 4 speeds).

An automatic will keep the turbos on the boil at all times, especially if you use a transbrake.

y2khawk

iTrader: (5)

The transbrake is one Pro for the auto.

I'd love to leave off big boost.

But, i'm guessing the Jerico is far lighter than either option (400 W/ OD or 4l80). I know the 80 can be built for big power, but what about manual VB and brake??

mongse

iTrader: (2)

You might want to look into a 200R4 too. The Turbo Brick guys are running them into the 9's. They're less to have redone than a 4L60E, but a little more than a 400.

Just an option.

Louis

iTrader: (7)

I vote for the Jerico. If you learn to downshift properly, Then you will have no problem. there is a thread in the drivetrain section going about Jericos.

Matt, I have another thing that I need to talk to you about as well- trans related. Ill email you. <img border="0" title="" alt="[Cool]" src="gr_images/icons/cool.gif" />

XLR8NSS

iTrader: (4)

I've seen manual 80E's for sale before. Evidently no one makes a brake for it though. <img border="0" title="" alt="[Sad]" src="gr_sad.gif" />

John

Air21

one thing you might want to look into is something that car craft covered a while back. They called it the poor mans jerico. It consists of a pro-shifted super t-10 that can hold 1000 hp. They used a ford toploader but but the super t-10 can be setup the same way. It was setup with the dogrings and the usual stuff to proshift it. I'd give liberty a call consiering it would cost 1,500 tops.

Patrick G

iTrader: (14)

G-Force makes a most excellent 5 speed too. Downshiftable in 1st and 2nd gear. No clutch needed for any of the upshifts though. Muy nice! <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />

It'llrun

If you're seriously wanting an OD, you should look into the 200-4r. I've had one that held up running 10.30's and when last used in a daily driver, held easily. If ya want more info, contact me as well as WeatherGuy.

y2khawk

iTrader: (5)

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by It'llrun:
<strong>If you're seriously wanting an OD, you should look into the 200-4r. I've had one that held up running 10.30's and when last used in a daily driver, held easily. If ya want more info, contact me as well as WeatherGuy.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I'd rather stay away from the 200. I know alot of buick guys going fast that have all gone to 400's because of the headaches.

This trans will see 150+ traps at more than likely 3200 race weight. I just don't want to spin 5500 on the highway cruising to the "spot" <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />

1CAMWNDR

iTrader: (21)

Send gear sets and shafts 1 through 4 of the T56 to Liberty to be Pro-Shifted.
Better practice your double clutching if you go this route though; NO SYNCHROS!!! <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" />

WeatherGuy

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by y2khawk:
<strong> </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by It'llrun:
<strong>If you're seriously wanting an OD, you should look into the 200-4r. I've had one that held up running 10.30's and when last used in a daily driver, held easily. If ya want more info, contact me as well as WeatherGuy.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I'd rather stay away from the 200. I know alot of buick guys going fast that have all gone to 400's because of the headaches.

This trans will see 150+ traps at more than likely 3200 race weight. I just don't want to spin 5500 on the highway cruising to the "spot" <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" /> </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">The one I am running is good to at least 900+ ft-lbs and carries a warranty. I would agree with you that there have been some issues with the 200-4R - it *really* depends upon who built it. Kurtz built mine, and so far this thing has rocked. But definitely not cheap at all.

BTW - nice twin-turbo setup. Thought hard about doing that, and may still some time in the future. How's the gas mileage with it?

Greg

JimmyKash

do you suscribe to the blown fbody emailing list?

call up Doug Hegge who just finished a tall deck 375" TT motor that made 1000hp with ignition issues

he researched a lot of manual options and ended up with a viper output shafted T56 i think

let me know if you need his email addy

Rpm2800

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">[/QB]</font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Ever thought abouty a Liberty/ G-Force.


Since you can get an auto or a manual that will both take the power , it's more a matter of choice.

Of course an auto will let you build boost of the line, but i read a quote from a turbo expert that said when you really wanna fly , a manual is the best route. With an auto you can build boost , but with a manual he said within a short amount of time after clutch engagement engagement, you will have full boost in a more linear fashion.

It also depends on if you race in a class or for money, or for just personal use. (If just for personal use , you may not mind whatever time it takes to spool). An auto can often take to much time to build boost. You probably already know that's the main reason why the fastest turbo cars use the manuals (If they are allowed too). They are in a hurry to leave , cause the nitrous and blower cars ain't waintin for the turbo beast to spool with the auto. Lol. But you may just want some good times and not run in a class. An auto would be alright then. ( If you run for money though, just tell them you must be allowed to spool up first or the deal is of. Lol.)

Plus with the 2 step and retarding timing on launch you can build quite a bit of boost too.

I thought I heard an lt1 guy on on hear say he built over 15psi leaving the line with his manual.

<small>[ December 09, 2002, 02:11 PM: Message edited by: Rpm2800 ]</small>

Reckless

iTrader: (9)

Saw a Turbo Buick running 8.80s @ 155 a couple weeks ago, not sure what tranny, but I'd guess the 200.

I'd go with a Carl Rossler built 400, and get the OD unit if you really think you need it. You could always add it on afterwards of the TH400 doesn't give you the top end you want.

One other thing, with a trans-brake, you can built some mean boost....believe me on this one...how do you think these Buick's run so damn fast?

AMS

From my understanding, none of the add on OD's for the 400 can take full throttle. Maybe thats not an issue for ya if you just want to use it to cuise to the spot..but just wanted to make sure ya knew it!

Chris

bigSS

Auto's are no fun - get the Jerico. <img border="0" title="" alt="[Razz]" src="gr_tounge.gif" /> I can't stand the thought of NOT banging gears, even if an auto is a hair faster...

Although, you wouldn't use the clutch to shift the Jerico right? And with your TH400 you'd probably use a manual vavlebody... hmmmm...

<small>[ December 09, 2002, 01:56 PM: Message edited by: bigSS ]</small>