Stock t-56 or TH400? NEED ADVICE!!

[Tork_MoNsTeR]

Ok guys. Last night I was talking to a bunch of guys and I am going to put rods and pistons in my truck. Billet mains are still a maybe. I will also be doing whatever head work I can afford at the time. My buddies dad builds performance transmissions and engines and we were talking about him building me a TH400 with a good stall converter, and transbrake. He can do it, and for fairly cheap. BIG question is....... Should I sell my 6-speed t-56 and buy a Built TH400 for my RC?? It will be built, sprayed, on slicks for track use but will also be driven around......

 

[FerrariTruck]

I wouldnt sell the six speed but yeah a th400 is the way to go:rock:

 

[FATJACK]

Gonna be faster in the 1/4 and much easier to control with the TH400, not near as much fun for cruising.

 

[Tork_MoNsTeR]

Thats what I figured but I figure with a 200 shot of spray the TH400 would prolly be a better option

 

[Scrambler1]

I'm changing mine to a TH400 with a Gear Vendors behind it right now. Similar to what you're talking about, transbrake, reverse pattern manual valve body, custom converter, etc.

Auto is faster down the track. Mine being manual action I'll be shifting, still not like a real manual but close enough for me.

 

[SrtBrad]

I am going to do exactly what you are doing now. The TH400 will handle all the power the Viper Engine can put out for 1/5 the cost of what our trans would cost.

 

[Tork_MoNsTeR]

Mine will have the manual action also..... Do we need an adapter plate made or is there one in production already??

 

[SrtBrad]

Mine will have the manual action also..... Do we need an adapter plate made or is there one in production already??

FstJack has your answer.

 

[Tork_MoNsTeR]

and does this mean we need a custom Drive shaft??

 

[yellowfever#154]

I was thinkin of doing the same thing to my truck. Maybe possible to do some kinda group buy on the adaptor for the TH400? Just a thought

 

[WizzySRT10]

A Stock Viper Spec T56 is capable of handling over 1000hp with maybe a new clutch. Unless you're going to do nothing but run the 1/4 mile I'd keep the stock t56.

 

[SrtBrad]

A Stock Viper Spec T56 is capable of handling over 1000hp with maybe a new clutch. Unless you're going to do nothing but run the 1/4 mile I'd keep the stock t56.

I must have heard wrong but I thought the T56 was good for 700 RWHP before mods needed to be done.:dontknow:

 

[TNVIPER]

The 400 is a 3 spd isnt it?.....probably would not be a good trans for interstate travel?..:dontknow: ....specially with 4.56 & 4.88 rear..

 

[WizzySRT10]

I must have heard wrong but I thought the T56 was good for 700 RWHP before mods needed to be done.:dontknow:

Not really really there's 1000 rwhp viper out there that are using the stock T56 still.

 

[SrtBrad]

Not really really there's 1000 rwhp viper out there that are using the stock T56 still.

I hear what you are saying but will that stock T56 handle WOT reliably?

 

[WizzySRT10]

I hear what you are saying but will that stock T56 handle WOT reliably?

Yeah the other side of it is you have to change that dexcol crap out of the trans and put ATF in as what Tremec calls for. Alot of people need driving lessons before they need mods.

 

[DevilDawg3097]

Yeah the other side of it is you have to change that dexcol crap out of the trans and put ATF in as what Tremec calls for. Alot of people need driving lessons before they need mods.

yeah Why did chrylser change it to gear oil instead of atf?

 

[WizzySRT10]

yeah Why did chrylser change it to gear oil instead of atf?

Cause Crysler sucks. Even Tremec says use ATF they built the tranny I'm gonna go with what they say.

 

[DevilDawg3097]

Cause Crysler sucks. Even Tremec says use ATF they built the tranny I'm gonna go with what they say.

how do i flush it out thats on my to do list while I wait for my pistons. just keep pouring till strait atf comes out?

 

[WizzySRT10]

how do i flush it out thats on my to do list while I wait for my pistons. just keep pouring till strait atf comes out?

That will work a lil dexcol in there won't hurt anything.