th350 or 400 conversion
Thread Starter
TECH Apprentice
Joined: Jan 2002
Posts: 347
Likes: 0
From: Orlando
th350 or 400 conversion I have an A4 now and am considering the swap. could you please tell me everthiny that is needed. I have access to both a 350 and 400 that I can have built with a manual valvebody and all the stuff to make it stronger. My main concern right now is all the extras needed.
different driveshaft or modified? if so how?
crossmember, i see bmr makes one can i modify the existing? any instructions on that?
what about a torque converter? do i get one that fits a th400 or is something special required? what about the flexplate?
also what about the dipstick?
is there anything i am leaving out????
thanks!!!
different driveshaft or modified? if so how?
crossmember, i see bmr makes one can i modify the existing? any instructions on that?
what about a torque converter? do i get one that fits a th400 or is something special required? what about the flexplate?
also what about the dipstick?
is there anything i am leaving out????
thanks!!!
Re: th350 or 400 conversion I did the swap. Where in Orlando are you. Maybe we can meet up so you can check the car out. I swapped from an M6 but the only real difference is that you'll need some PCM programming to delete the A4 stuff from the PCM.
Will
Will
Re: th350 or 400 conversion I have the dipsticks in stock for either trans. Give me a hollar and I can give you some advice or sell you the whole kit. 281-449-8833
TECH Junkie
iTrader: (7)
Joined: Nov 2001
Posts: 3,378
Likes: 1
From: From the Bowels of Hell!!! You want some of me bitch?!?!?!
Re: th350 or 400 conversion The TH350 can be made as tough as the TH400, but for more $$$. The TH400 is heavier, so that is a decision for you to make, weight or reliability.
The A4 crossmember can be modified very easily.
Get the dipstick from Madman
You will need a standard TH400/350 convertor.
The flexplate can be done several ways. My convertor was built to fit the stock flexplate.
You will need a different driveshaft, and tranny yoke.
If you go with a standard shift pattern tranny, you can use your stock shifter.
You can use your stock cooler lines.
You don't HAVE to get the codes deleted from the PCM, but you WILL have a constant SES light if not.
Tim
The A4 crossmember can be modified very easily.
Get the dipstick from Madman
You will need a standard TH400/350 convertor.
The flexplate can be done several ways. My convertor was built to fit the stock flexplate.
You will need a different driveshaft, and tranny yoke.
If you go with a standard shift pattern tranny, you can use your stock shifter.
You can use your stock cooler lines.
You don't HAVE to get the codes deleted from the PCM, but you WILL have a constant SES light if not.
Tim
Re: th350 or 400 conversion Actually you will probably still have the SES light even if you turn off all of the DTC's related to your 4l60E. LS1 EDit does not fix this. It advertises that it does, but it does not. Carputing Inc. has no idea why and has showed no concern about it or plans to fix it. Just a heads up.
Thread Starter
TECH Apprentice
Joined: Jan 2002
Posts: 347
Likes: 0
From: Orlando
Re: th350 or 400 conversion Thank you for the info I am leaning towards the 400 as it is cheaper and cost is a big concern. I believe I know of a place that will build a converter to my specs suchas the ls1 bolt pattern. I have a ST 3500 right now the car is a daily driver with 3.23 gears I am running 315 nittos as well and love the way the car launches on the street, does the 400 have roughly the same ratio in first as the a4?. I was considering a 3000-3500 stall again I plan on running 100-150 shot of nitrous.
does the th-400 just bolt up in place of the a4?and just to go over it again i need the following:
dipstick
new driveshaft or modify existing
th400
th400 style converter
drill holes in flexplate or get moddeed converter
modify my crossmember
a new shifter
MacGyver I would like to meet up and check out your set up. send me an e-mail.
does the th-400 just bolt up in place of the a4?and just to go over it again i need the following:
dipstick
new driveshaft or modify existing
th400
th400 style converter
drill holes in flexplate or get moddeed converter
modify my crossmember
a new shifter
MacGyver I would like to meet up and check out your set up. send me an e-mail.
Trending Topics
Re: th350 or 400 conversion </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Tim98TA:
<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 4mulaJoe:
<strong>Actually you will probably still have the SES light even if you turn off all of the DTC's related to your 4l60E. LS1 EDit does not fix this. It advertises that it does, but it does not. Carputing Inc. has no idea why and has showed no concern about it or plans to fix it. Just a heads up.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif"><img border="0" alt="[bullshit]" title="" src="graemlins/gr_bs.gif" /> Call Thunder Racing and ask them. They did my tuning and I have -0- SES lights with my TH400.
Tim</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">It's not bullshit you moron. I could fix it with a shop(unlimited VIN version of LS1 edit too). All I would have to do is flash it with a m6 program and go from there. I don't have that option with my single VIN LS1 edit. My point is that I turn off a specific DTC, and the DTC still shows up!! Carputing has acknowledged the problem. They just didn't do a damn thing about it.
<small>[ October 23, 2002, 01:48 PM: Message edited by: 4mulaJoe ]</small>
<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 4mulaJoe:
<strong>Actually you will probably still have the SES light even if you turn off all of the DTC's related to your 4l60E. LS1 EDit does not fix this. It advertises that it does, but it does not. Carputing Inc. has no idea why and has showed no concern about it or plans to fix it. Just a heads up.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif"><img border="0" alt="[bullshit]" title="" src="graemlins/gr_bs.gif" /> Call Thunder Racing and ask them. They did my tuning and I have -0- SES lights with my TH400.
Tim</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">It's not bullshit you moron. I could fix it with a shop(unlimited VIN version of LS1 edit too). All I would have to do is flash it with a m6 program and go from there. I don't have that option with my single VIN LS1 edit. My point is that I turn off a specific DTC, and the DTC still shows up!! Carputing has acknowledged the problem. They just didn't do a damn thing about it.
<small>[ October 23, 2002, 01:48 PM: Message edited by: 4mulaJoe ]</small>
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
TECH Enthusiast
Joined: Jan 2002
Posts: 585
Likes: 0
From: las vegas, nev
Re: th350 or 400 conversion </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by mobius:
<strong>Thank you for the info I am leaning towards the 400 as it is cheaper and cost is a big concern. I believe I know of a place that will build a converter to my specs suchas the ls1 bolt pattern. I have a ST 3500 right now the car is a daily driver with 3.23 gears I am running 315 nittos as well and love the way the car launches on the street, does the 400 have roughly the same ratio in first as the a4?. I was considering a 3000-3500 stall again I plan on running 100-150 shot of nitrous.
does the th-400 just bolt up in place of the a4?and just to go over it again i need the following:
dipstick
new driveshaft or modify existing
th400
th400 style converter
drill holes in flexplate or get moddeed converter
modify my crossmember
a new shifter
MacGyver I would like to meet up and check out your set up. send me an e-mail.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">the first gear in a 400 is 2.48. you can upgrade to a 2.75, but its about $450. i dont know if you can get the 3.05 ratio thats in the a4 now. you can bolt the 400 right to the block, but you dont use one hole. so it mounts with 5 bolts instead of 6. or you can get an adapter plate that will allow you to use all 6 holes, but then i think you need a spacer for the convertor hub to slide into the flexplate.
<strong>Thank you for the info I am leaning towards the 400 as it is cheaper and cost is a big concern. I believe I know of a place that will build a converter to my specs suchas the ls1 bolt pattern. I have a ST 3500 right now the car is a daily driver with 3.23 gears I am running 315 nittos as well and love the way the car launches on the street, does the 400 have roughly the same ratio in first as the a4?. I was considering a 3000-3500 stall again I plan on running 100-150 shot of nitrous.
does the th-400 just bolt up in place of the a4?and just to go over it again i need the following:
dipstick
new driveshaft or modify existing
th400
th400 style converter
drill holes in flexplate or get moddeed converter
modify my crossmember
a new shifter
MacGyver I would like to meet up and check out your set up. send me an e-mail.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">the first gear in a 400 is 2.48. you can upgrade to a 2.75, but its about $450. i dont know if you can get the 3.05 ratio thats in the a4 now. you can bolt the 400 right to the block, but you dont use one hole. so it mounts with 5 bolts instead of 6. or you can get an adapter plate that will allow you to use all 6 holes, but then i think you need a spacer for the convertor hub to slide into the flexplate.
Re: th350 or 400 conversion Rob is correct with the 1st gear ratio in the TH400. you will lose a little going to it. I have a 2.75 first gear in mine and it was like 480 bucks extra for it. you CAN get a 3.0x first gear for it but I hear they are really weak parts and break often. Email is on the way mobius.
Will
Will
TECH Junkie
iTrader: (7)
Joined: Nov 2001
Posts: 3,378
Likes: 1
From: From the Bowels of Hell!!! You want some of me bitch?!?!?!
Re: th350 or 400 conversion </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by 4mulaJoe:
<strong>It's not bullshit you moron. I could fix it with a shop(unlimited VIN version of LS1 edit too). All I would have to do is flash it with a m6 program and go from there. I don't have that option with my single VIN LS1 edit. My point is that I turn off a specific DTC, and the DTC still shows up!! Carputing has acknowledged the problem. They just didn't do a damn thing about it.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Well how come my computer has NOT been reflashed to an M6, and Thunder simply deleted the codes and I have NO SES lights??????? Explain it!!!!!!
Tim
<strong>It's not bullshit you moron. I could fix it with a shop(unlimited VIN version of LS1 edit too). All I would have to do is flash it with a m6 program and go from there. I don't have that option with my single VIN LS1 edit. My point is that I turn off a specific DTC, and the DTC still shows up!! Carputing has acknowledged the problem. They just didn't do a damn thing about it.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Well how come my computer has NOT been reflashed to an M6, and Thunder simply deleted the codes and I have NO SES lights??????? Explain it!!!!!!
Tim
TECH Enthusiast
Joined: Nov 2001
Posts: 677
Likes: 0
From: Baton Rouge, La. and sometimes Houston Tx
Re: th350 or 400 conversion You can't flash an m6 file onto a PCM with the tuner version of LS1-Edit. It requires a Tech II to do so. Thunder has looked into one and doesn't have it so your claim is wrong. I have my VIN locked version of LS1-Edit and a th400 and I don't have many miles on the setup but no SES yet.
TECH Junkie
iTrader: (7)
Joined: Nov 2001
Posts: 3,378
Likes: 1
From: From the Bowels of Hell!!! You want some of me bitch?!?!?!
Re: th350 or 400 conversion </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by 4mulaJoe:
<strong>Actually you will probably still have the SES light even if you turn off all of the DTC's related to your 4l60E. LS1 EDit does not fix this. It advertises that it does, but it does not. Carputing Inc. has no idea why and has showed no concern about it or plans to fix it. Just a heads up.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif"><img border="0" alt="[bullshit]" title="" src="graemlins/gr_bs.gif" /> Call Thunder Racing and ask them. They did my tuning and I have -0- SES lights with my TH400.
Tim
<strong>Actually you will probably still have the SES light even if you turn off all of the DTC's related to your 4l60E. LS1 EDit does not fix this. It advertises that it does, but it does not. Carputing Inc. has no idea why and has showed no concern about it or plans to fix it. Just a heads up.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif"><img border="0" alt="[bullshit]" title="" src="graemlins/gr_bs.gif" /> Call Thunder Racing and ask them. They did my tuning and I have -0- SES lights with my TH400.
Tim
Re: th350 or 400 conversion </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Tim98TA:
<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 4mulaJoe:
<strong>It's not bullshit you moron. I could fix it with a shop(unlimited VIN version of LS1 edit too). All I would have to do is flash it with a m6 program and go from there. I don't have that option with my single VIN LS1 edit. My point is that I turn off a specific DTC, and the DTC still shows up!! Carputing has acknowledged the problem. They just didn't do a damn thing about it.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Well how come my computer has NOT been reflashed to an M6, and Thunder simply deleted the codes and I have NO SES lights??????? Explain it!!!!!!
Tim</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I don't work for Carputing Inc. I am not the programmer who wrote or supports the software. How the hell am I suppose to know why it does not work? Simply put, I have turned off 8 DTC codes. 2 of them still show up all the time. Carputing's response is "I have no idea" when asked why their software does not work as advertised.
<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 4mulaJoe:
<strong>It's not bullshit you moron. I could fix it with a shop(unlimited VIN version of LS1 edit too). All I would have to do is flash it with a m6 program and go from there. I don't have that option with my single VIN LS1 edit. My point is that I turn off a specific DTC, and the DTC still shows up!! Carputing has acknowledged the problem. They just didn't do a damn thing about it.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Well how come my computer has NOT been reflashed to an M6, and Thunder simply deleted the codes and I have NO SES lights??????? Explain it!!!!!!
Tim</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I don't work for Carputing Inc. I am not the programmer who wrote or supports the software. How the hell am I suppose to know why it does not work? Simply put, I have turned off 8 DTC codes. 2 of them still show up all the time. Carputing's response is "I have no idea" when asked why their software does not work as advertised.
TECH Junkie
iTrader: (7)
Joined: Nov 2001
Posts: 3,378
Likes: 1
From: From the Bowels of Hell!!! You want some of me bitch?!?!?!
Re: th350 or 400 conversion </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by 4mulaJoe:
<strong>Simply put, I have turned off 8 DTC codes. 2 of them still show up all the time. Carputing's response is "I have no idea" when asked why their software does not work as advertised.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Seems it's isolated to your PCM.
Derek, you actually DROVE your car????????? I better keep an eye in the classifieds, when it becomes for sale tomorrow. LOL
Tim
<strong>Simply put, I have turned off 8 DTC codes. 2 of them still show up all the time. Carputing's response is "I have no idea" when asked why their software does not work as advertised.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Seems it's isolated to your PCM.
Derek, you actually DROVE your car????????? I better keep an eye in the classifieds, when it becomes for sale tomorrow. LOL
Tim
TECH Enthusiast
Joined: Nov 2001
Posts: 677
Likes: 0
From: Baton Rouge, La. and sometimes Houston Tx
Re: th350 or 400 conversion Yeah Tim my car moves <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" /> I twisted a puny aluminum driveshaft playing with my transbrake. Now all I need to do is get a new one made. My Spohn driveshaft I ordered was too short and they won't call me back afer I've left several messages. <img border="0" title="" alt="[Roll Eyes]" src="images/icons/rolleyes.gif" /> Imagine that huh. I don't need any measurements I do them all the time. But thats another story <img border="0" title="" alt="[Mad]" src="gr_images/icons/mad.gif" />
Re: th350 or 400 conversion </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by GeorgeC:
<strong>4mulaJoe, what DTC's are still present?</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">P01860 AND P1810
They are definately turned off. Ken at Carputing has seen it, but offers no solution.
<strong>4mulaJoe, what DTC's are still present?</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">P01860 AND P1810
They are definately turned off. Ken at Carputing has seen it, but offers no solution.
Thread Starter
TECH Apprentice
Joined: Jan 2002
Posts: 347
Likes: 0
From: Orlando
Re: th350 or 400 conversion thnaks for all the replies... is there an after market flexplate available by chance>? is this an easy conversion? what is the easiest way to modify/buy a driveshaft for it
thanks
thanks
Re: th350 or 400 conversion </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Tim98TA:
Seems it's isolated to your PCM.
Tim[/QB]</font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Nothin special about my PCM.
Seems it's isolated to your PCM.
Tim[/QB]</font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Nothin special about my PCM.