12-26-2014, 08:58 PM | #1 |
Drives: 2011 2SS Join Date: Jun 2013
Location: Kansas City
Posts: 997
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My th400 swap notes
I just wanted to start a thread to discuss my th400 swap process and expenses so others could have an idea from first hand..
So let's start with the list of parts and keep in mind I am swapping out a m6.. Transmission w/ valve body and trans break I am using fti Convertor I am using fti Flexplate "make sure your convertor has same bolt pattern" I am using tci Oil cooler w/fan and thermostat and hoses "derale makes a few nice ones" Drive shaft Transmission bushing poly or rubber for your application Transmission cross member "can modify the manual one to work" 9-11 quarts of tranny fluid type f for my application l Shifter with nuetral safety and reverse light micro switches Optional Tranny temp gauge and some sort of mounting solution as your factory one won't work no solution this far anyway As things come up throughout my swap I might change some of these things so far I have taken out all the old stuff just waiting on the new now. Some key things I have come to so far is one if u plan on using a tranny temp gauge ask your trans builder to tap a hole in the pan for it makes things very easy. Also keep in mind u will need to make your reverse lights and neutral safety work I believe I have a solution for these and even retain my backup sensors after working with a very helpful vendor on here I will follow up once I am certain everything works. Something else to keep in mind as it could be an unexpected expese is a gear change to match your plans with the car I am swapping my 3.91 back to 3.45 I am looking at about 4200 bucks all new parts this will be a setup rated for up to 900 hp. I sold my stock tranny and accessories for 2500 so the cost was not bad at all considering what a big clutch would have cost me this winter had I keep the manual. I have pictures and will post some over the next week or two as progress continues
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2011 2SS,fti th400, ECS 1500, Flex Fuel, Boost built 376, squash fuel system
Last edited by pdiddy; 12-26-2014 at 09:00 PM. Reason: Typo |
12-26-2014, 10:19 PM | #2 |
10.11 @ 136.32
Drives: Black & Yellow 2SS/RS LPE LS7 427 Join Date: Mar 2010
Location: Redcliff, Alberta
Posts: 957
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Thanks pdiddy. I'm doing the same swap from a 6l80. I'll add my list of things as well in addition to yours. My list is mostly incidentals that people may need for track purposes.
DSS has a driveshaft for a Th400 to stock diff listed on their website. Interesting your going from 3.91 to 3.45. I have 3.45 and was considering going to 3.70. Maybe I'll just leave the 3:45's in for now and see how it goes. Gforce1320 is doing a swap for a customer later in January and is building a crossmember specific to the TH400 swap. They said they would keep the measurements and be able to build one for customers if needed. Bryan
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Last edited by LS7 427; 12-26-2014 at 10:31 PM. Reason: Typo |
12-26-2014, 11:04 PM | #3 |
Drives: 2011 2SS Join Date: Jun 2013
Location: Kansas City
Posts: 997
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The dip stick was something I had initially forgot but figured out and be sure it's locking for the track
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2011 2SS,fti th400, ECS 1500, Flex Fuel, Boost built 376, squash fuel system
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12-26-2014, 11:06 PM | #4 |
Drives: 2011 2SS Join Date: Jun 2013
Location: Kansas City
Posts: 997
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Why the toggle and trans break switch is that so u don't accidentally turn on the trans break ??
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2011 2SS,fti th400, ECS 1500, Flex Fuel, Boost built 376, squash fuel system
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12-26-2014, 11:16 PM | #5 |
Drives: 2011 2SS Join Date: Jun 2013
Location: Kansas City
Posts: 997
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I would look into a fire wall mount locking dip stick lokar makes them they are pricy but will lock and mount to fire wall which is ideal for the 5th gen from my understanding
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2011 2SS,fti th400, ECS 1500, Flex Fuel, Boost built 376, squash fuel system
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12-26-2014, 11:25 PM | #6 |
Drives: 12 camaro ss, 72 chevelle, 91camaro Join Date: Dec 2013
Location: findlay,oh
Posts: 2,069
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The one I had was a pos, after I pulled the stick for the first time it wouldn't go back into the pan as it was a cheap plastic dipstick that bent. This was a jegs brand, maybe a lokar one would be better
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12 camaro ss 427lsx, th400, f310 heads, crower shaft mounts, gpi specd solid roller, shearerfab 2k hp a/w, twin bullseye 88mm turbos, hughes pro ssx bolt together converter, holley dominator, 8.50 cert, backhalf, Ford 9", 33x17x16 tires, c16 fuel
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12-26-2014, 11:43 PM | #7 | |
10.11 @ 136.32
Drives: Black & Yellow 2SS/RS LPE LS7 427 Join Date: Mar 2010
Location: Redcliff, Alberta
Posts: 957
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Quote:
Bryan
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12-26-2014, 11:45 PM | #8 |
10.11 @ 136.32
Drives: Black & Yellow 2SS/RS LPE LS7 427 Join Date: Mar 2010
Location: Redcliff, Alberta
Posts: 957
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This particular dip stick is locking and bolts up to the bell housing. I'll check out the Lokar.
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12-27-2014, 12:28 AM | #9 |
Drives: 2011 2SS Join Date: Jun 2013
Location: Kansas City
Posts: 997
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It is locking it didn't seem like the description on it was its a hell of a lot better price than the lokar
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2011 2SS,fti th400, ECS 1500, Flex Fuel, Boost built 376, squash fuel system
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12-27-2014, 12:38 AM | #10 |
Drives: 2011 2SS Join Date: Jun 2013
Location: Kansas City
Posts: 997
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It seems weird that bm offers a locking one for a 6l80 that's 130 then the one u posted for 50 I might give them a call about it and see what it's all about
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2011 2SS,fti th400, ECS 1500, Flex Fuel, Boost built 376, squash fuel system
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12-27-2014, 01:00 AM | #11 |
Drives: 2015 Summit White 2SS 1LE Join Date: Feb 2012
Location: Vance Alabama
Posts: 8,019
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My th400 is a stock rebuild with a good drum and 34 sprag to handle my 630rwhp. That will handle the vast majority of the people that will do this conversion. A th400 is a tough tranny in stock form.
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Retired wanna be cylinder head porter
2015 2SS 1LE Clutch reservoir, Vararam DRX, ported TB, TSP 2" headers, MGW shifter Totalled: 2010 1SS Wilkes Performance/Eagle 416 shortblock, TSP custom valvetrain, PRC 260 heads, Edelbrock Pro Flo 102, th400 swap, 8" PTC 5500 stall= 535/435 at the wheels tuned Gen 3 Performance and Dyno 10.97 @ 124 full weight in 3100 DA CamaroFest X |
12-29-2014, 03:19 PM | #12 |
Fight Crime, Drive Armed
Drives: '14 2SS Yelo Maro, HD collection Join Date: Jun 2013
Location: NRH, TX
Posts: 985
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I concur the T400 is a brute. Back in the day, the dump trucks the city bought to haul off mud from digging up water main breaks, were powered by big block Chevy motors and T400s. Along with a buddy, we bought a truck at an auction and removed the motor/tranny a sold the truck to a salvage yard. We ended up, for $560, with a base 427 4 bolt main block with steel crank/rods, and a T400 that just needed a rebuild kit for that model tranny. Those trannies hit gear changes HARD!
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Bring back Sunoco 260 to the local station. Some folks STILL drive L-88s and need the good gas.
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12-29-2014, 04:56 PM | #13 |
Drives: 2011 2SS Join Date: Jun 2013
Location: Kansas City
Posts: 997
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Ordered all my parts today
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2011 2SS,fti th400, ECS 1500, Flex Fuel, Boost built 376, squash fuel system
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01-02-2015, 10:50 PM | #14 |
10.11 @ 136.32
Drives: Black & Yellow 2SS/RS LPE LS7 427 Join Date: Mar 2010
Location: Redcliff, Alberta
Posts: 957
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I got my 6L80 out today. Have everything here except the flex plate and converter.
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