looking at fitting a t400 behind my LS1 , I know Yank has a block adapter available ( for use with their custom converter) , is there any others ? Also Yank tell me that the T400 can bolt straight up to the LS1 ( no block spacer needed) and I can use a standard T400 converter , with a new flywheel and crank spacer they have available . Whats the best way to do it ? its cheaper to just bolt it up and use a T400 converter with their new flywheel , is this an OK setup ? Mike said it isnt as strong setup but didnt get into details . <img border="0" alt="[cheers]" title="" src="graemlins/gr_cheers.gif" />

 

Yank is the most expensive way to do it..get a local, well known trans shop to build you a race prepped TH400 and buy a good TH400 converter and flywheel and all the other little goodies and it basically bolts in...

Look for Macgyvers post a few down....he did a whole write up on it... <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

By the way, if you are looking for a converter for it, I would be more than happy to sell you mine.. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

 

I just re-read MacGuyvers post and didn't see anything mentioned about a new flywheel? Is this also a must?

Tim

 

I used a stock GM flexplate...

 

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by BIGBOS:
<strong>I used a stock GM flexplate...</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">In other words, I can't use the LS1 flywheel right?
Dammit <img border="0" title="" alt="[Mad]" src="gr_images/icons/mad.gif" />

Tim

 

From what I've heard the stock flexplate has knock outs that match up with a th400 converter. I can't personally gurantee this to be true but this is my impression on the swap

LAter <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />

 

Auto's use flexplates, M6's use flywheels

You have to get a standard auto flexplate from GM..

 

BIGBOS , thanks for the offer on your converter but I allready have a manual t400 and 4000 converter from an older car waiting to go in <img border="0" title="" alt="[Cool]" src="gr_images/icons/cool.gif" />
You used a stock GM flexplate , which one ? Im going from a 4l60e to the t400 , so which flexplate do I use , the stock Ls1 A4 flexplate or a stock T400 flexplate from an older t400 car ? Yank told me I need their special flexplate and adapter for the crank , for it to work with a t400 converter . <img border="0" title="" alt="[Confused]" src="images/icons/confused.gif" />

<small>[ May 05, 2002, 08:34 PM: Message edited by: 1BadassLS1 ]</small>

 

I believe mine is the standard A4 GM one...redrilled to fit the TH400 converter...and the only converter adjustment I had to make was a 1/4" crank pilot extension...

 

<img border="0" alt="[cheers]" title="" src="graemlins/gr_cheers.gif" /> Now I get it , the crank spacer Yank is telling me about is a crank pilot extension , and the flexplate needs to be drilled to suit the t400 'verter . <img border="0" alt="[Firebird]" title="" src="graemlins/formula.gif" />

 

Good.. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

<img border="0" alt="[cheers]" title="" src="graemlins/gr_cheers.gif" />

 

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by BIGBOS:
<strong>I believe mine is the standard A4 GM one...redrilled to fit the TH400 converter.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Isn't there a flexplate that will fit the TH400 without the drilling? I mean they did make them before? IF you get the holes off just a bit, you will have alignment and balancing problems.

Tim

 

Yea there is one, but its lots of $ compared to the stock one... <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

I think they go for like 600-800 bucks.. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

 

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by BIGBOS:
<strong>Yea there is one, but its lots of $ compared to the stock one... <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

I think they go for like 600-800 bucks.. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" /> </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Now where did I put my Cobalt drill bits?

Tim