Bernardd Posted July 15, 2010 Share Posted July 15, 2010 I know a few of you have made conversions. I would like an o/d unit that is capable of holding more than the jatco 4n71b. Post up any info, or conversions for sale and or how'd you go about making your own conversion. Quote Link to comment Share on other sites More sharing options...
spork Posted July 16, 2010 Share Posted July 16, 2010 I know a few of you have made conversions. I would like an o/d unit that is capable of holding more than the jatco 4n71b. Post up any info, or conversions for sale and or how'd you go about making your own conversion. I haven't seen James Thagard post here recently, but he made an adapter plate kit for the GM trannies. I have one of his kits that I'm using for my power glide. He may be able to make another "kit" for the right price. It might be worth trying to track him down. His website used to be www.speedshopthagard.com, but it doesn't seem he has it anymore as the site is dead. Quote Link to comment Share on other sites More sharing options...
Brad-ManQ45 Posted July 18, 2010 Share Posted July 18, 2010 Warren has made the swap to a 2004R from a Grand National, having made his own pieces and bought one piece - the flexplate to converter adapter from someone else. He is selling the whole kit, but I don't know for how much, but eventually I will buy one for my car. Quote Link to comment Share on other sites More sharing options...
Bernardd Posted July 18, 2010 Author Share Posted July 18, 2010 @ Spork: I chat with James every now and then about turbo things and such. I have all his info and cell#. I'm looking for an individual that did a conversion who is from the northwest. @Bradman: that conversion would be perfect for what I want. I'll pm him and see what he says. Quote Link to comment Share on other sites More sharing options...
zcar? Posted July 26, 2010 Share Posted July 26, 2010 (edited) I'm looking for an individual that did a conversion who is from the northwest. I have done it, I'm in portland oregon, its not all that hard to do really. I still have all my prints I think. let me know and I will look for them. here is what my conversion looked like: Edited July 26, 2010 by zcar? Quote Link to comment Share on other sites More sharing options...
Bernardd Posted July 26, 2010 Author Share Posted July 26, 2010 (edited) AHA!! I was hoping you'd chime in. I would be very interested in any info you're willing to share. What transmission did you use? What did you do for a converter and how did you manage the convert mounting? Thanks again for any info you can provide. Bernard After a search on your posts I see that you're willing to make another adapter so that's the way I'd go if you're still up for it. Edited July 26, 2010 by Bernardd Quote Link to comment Share on other sites More sharing options...
zcar? Posted July 26, 2010 Share Posted July 26, 2010 AHA!! I was hoping you'd chime in. I would be very interested in any info you're willing to share. What transmission did you use? What did you do for a converter and how did you manage the convert mounting? Thanks again for any info you can provide. Bernard After a search on your posts I see that you're willing to make another adapter so that's the way I'd go if you're still up for it. I would be more than willing to make another run of adapters. where are you located? in the northwest I hope. I used a th350 but you can use any trans that came behind a sbc. and the converter just bolts to a stock flexplate from gm. pm me what you want to do and we can talk about it there. Jeremy Quote Link to comment Share on other sites More sharing options...
The Goat Posted March 4, 2013 Share Posted March 4, 2013 I know this is kinda old now, but i would kill for one of these adapters. If anyone has one, or would be willing to build one, please, please pm me. I need a stronger auto behind my l28t. I would pay any reasonable amount + shipping. You could also email me thegoat911@gmail.com Quote Link to comment Share on other sites More sharing options...
Bernardd Posted August 6, 2013 Author Share Posted August 6, 2013 zcar? Can you pm me please? Your mail box is full. Quote Link to comment Share on other sites More sharing options...
Tony D Posted August 11, 2013 Share Posted August 11, 2013 I tend to think JeffP would be able to use one of these on his 79 Coupe Drag Car... Quote Link to comment Share on other sites More sharing options...
240Z Turbo Posted November 7, 2013 Share Posted November 7, 2013 (edited) I had to dig, but I thought I would provide what information I still have on the swap. If "Zcar?" can get the adapter plate in 0.5" aluminum (I think that was the thickness of my old adapter, Spork can verify) you can then use the following information. I used the following company to manufacture the flex plate adapter from steel as well as the ringless flex plate...http://www.wilcap.com/ Below is a picture of the flex plate adapter and here is the drawing file name "flexplate_adapter.prt.4" in the following folder...http://www.eng.fsu.edu/~jthagard/3liter/pics/trannyadapter/ (please verify it is the same dimensions as the picture below) Use the above folder to see the pictures for how the setup was installed, which I will show below... Flex Plate adapter First step was to install the adapter... Next install the OEM flywheel, which I think was from a maxima I then installed the flexplate adapter I then installed the Wilcap flex plate At this point the back of the L28 will mirror a Chevy engine so you can use off the shelf converters and transmissions. Edited November 7, 2013 by 240Z Turbo Quote Link to comment Share on other sites More sharing options...
HowlerMonkey Posted November 17, 2013 Share Posted November 17, 2013 How do you deal with bolting the converter to the assembly? I like the idea of being able to use 200r4 or maybe even 700r4. Quote Link to comment Share on other sites More sharing options...
240Z Turbo Posted November 23, 2013 Share Posted November 23, 2013 Once you bolt up the transmission, you simply pull the converter forward until it seats on the ringless flexplate. There is a 0.5" gap between the OEM flexplate and the ringless flex plate, which allows sufficient space to install the converter bolt. You then rotate the crank and access the next bolt until you are done. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.