How do I mate my TH400 to my 2002 LQ4? Do I just need spacers/adapters or a full blown custom converter.

 

i bought the GM spacer and the longer flexplates bolts through a search on here for the part numbers. This mated up perfectly to my existing TH400 converter.

http://jeepinpete.com/engine_trans_a...ans_adapt1.htm

 

^^ great pictures of what is going on with the spacer.

 

cheaper alternative

http://store.summitracing.com/partde...5&autoview=sku

 

Cheaper yes, but I feel that the spacer which is bolted into the crankshaft is a stronger design if you're willing to spend $25 more plus you get brand new flexplate bolts in the process.

 

well, i already had arp bolts. so i already had an advantage i guess.

but you can get new grade 10.9 bolts for less than 5.00 at most local hardware stores. i guess its all up to what you want to spend


if you buy a tci flexplate it will come w/ one also (flywheel spacer)


either way will work. its just up to what you want to do

 

Great thanks guys

 

Where can I find part numbers on the spacer and bolts in the jeepinpete article?

 

look at the pictures, they're on the boxes and packaging

 

Thanks

 

So I can order that stuff through GM?

 

I'm sure it will be cheaper through SDparts.
(They are a sponsor)
------------------------------->>>>>>

 

Ok I was just meaning that they are just GM parts numbers

 

My 2005 LQ4 had the flat flexplate with the spacer already installed when I picked it up...

 

I don't see a part number on the spacer box. I tried the main ones and nothing turned up. But I did find the bolts. They want 5 bucks a piece for them? That seems like a lot but maybe I am just not used to buying Gen III stuff.

 

I have the dished flexplate. Wanna trade?

 

Can I use a flex plate from a Gen I SBC? I have a brand new SFI one in my garage that I would love to use.

 

no, diffrent bolt pattern. And why in those pics does it show the spacer mounted outside the flex plate. what purpose does that serve?

 

I was wondering the same thing.

 

the distance is the same on the feet of the converter. it is the pilot hub on the converter that is different.

you can physically bolt it up w/o the spacer or adapter and it will engage the pump and drive fine, but you will have the negative effects of the pilot hub on the converter not being 100% aligned w/ the crank. which in turns will cause really bad vibrations and alot of other really bad things