Automatic Transmission 2-Speed thru 10-Speed GM Autos | Converters | Shift Kits
Sponsored by:
Sponsored by:

T-56 vs TH400

Thread Tools
 
Search this Thread
 
Old Oct 15, 2004 | 02:16 AM
  #1  
distortion_69's Avatar
Thread Starter
11 Second Club
iTrader: (20)
 
Joined: Jul 2002
Posts: 1,988
Likes: 0
From: Jonesboro, Ga
Default T-56 vs TH400

I have plans for a turbo car in the near future. I have pondered ditching the 6 speed for the consistancy and launching ability of a built turbo 400. My only concern is, in the event that I want to play on the highway (rare).. how much topend loss would there be? Obviously, I will be geared accordingly for each. Say for instance everything in my car is equal besides the turbo 400 and the m6.. how badly would the m6 prevail on the highway?

Thanks,
Josh
Reply
Old Oct 15, 2004 | 12:11 PM
  #2  
MeanWS6's Avatar
TECH Fanatic
 
Joined: Nov 2001
Posts: 1,064
Likes: 0
From: CA
Default

Good question I would like to know also

So, if we are cruising down the hwy at say 50/60mph, do we have to downshift it to go WOT - then bump it into third. What about cruising around at lower speed on the street, do you need to downshift it then
(can you even downshift a manual reverse while moving???)

I imagine a 4K stall and 3.73 gears would do OK for RANDOM high speed highway sprints, but not sure.

This is why I plan i getting my TH400 with the GV OD unit
Reply
Old Oct 15, 2004 | 04:48 PM
  #3  
john kilgore's Avatar
TECH Regular
 
Joined: Feb 2004
Posts: 439
Likes: 1
From: burbank ca
Default 4l80e

Originally Posted by distortion_69
I have plans for a turbo car in the near future. I have pondered ditching the 6 speed for the consistancy and launching ability of a built turbo 400. My only concern is, in the event that I want to play on the highway (rare).. how much topend loss would there be? Obviously, I will be geared accordingly for each. Say for instance everything in my car is equal besides the turbo 400 and the m6.. how badly would the m6 prevail on the highway?

Thanks,
Josh
that is a trans you should look at. it will be pricey but you will get a lock up tc like your 6sp with 25% od. the kit with a 3500 stall w lock up, approx. $4200.00 l'm not trying to sell this trans that's not what l do.
Reply
Old Oct 18, 2004 | 11:21 AM
  #4  
Noyzee's Avatar
8 second mod
iTrader: (37)
 
Joined: Nov 2002
Posts: 17,879
Likes: 1
From: East Side Performance! mASShole
Default

wel, after blowing 3 t-56's and a couple piece of built ones blowing with my old set up. Twin turbo, i went with a th-400 this time around with the n2o, its a rev man VB and it is still fun. on the highway id say around 140-150 is where my car would loose to an equal car only 6 speed. it pulls solid all the way and keeps trucking till im out of gear.
go 400 you wont regret it. i went with a huges and a huges converter, i got it threw east Side>>> they took good care of me.
Reply




All times are GMT -5. The time now is 03:32 AM.

story-0
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-1
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-2
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-3
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-4
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-5
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-6
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-7
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-8
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-9
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE