Barney Eaton Posted February 2, 2006 Share Posted February 2, 2006 I get lots of emails and phone calls about Reattas.......this one came yesterday saying a dealer (don't know where) has a factory supercharged 1989 Reatta. Today he sent me pictures and it looks pretty good but I think you will all agree, it was not factory done.Why........the picture shows a late production 3800 supercharge engine. The first versions of this engine were used in the 1992 Park Avenue Ultra. This would be 4 years after the 1989 Reatta was built. But the dealer advertised and told him it was a limited production factory job.We will see how this story ends.......... Picture attachedHow about your comments. Link to comment Share on other sites More sharing options...
Guest EDBS0 Posted February 2, 2006 Share Posted February 2, 2006 I could be wrong but it looks like a series II that debuted in 1996? Link to comment Share on other sites More sharing options...
luftweg Posted February 2, 2006 Share Posted February 2, 2006 What's more of a question to me is how well the installation was done, and how much everthing on the car worked like before, etc....Since, it all seems, it's not that easy to pull-off well. Link to comment Share on other sites More sharing options...
Guest inthespot Posted February 2, 2006 Share Posted February 2, 2006 Just for my own info, how much more hp and speed would you get if you did have a supercharged 3800 in a Reatta. Would the speed be worth the cost and trouble it would take to ensure that everything worked the way it did originally. Just from reading the postings, it seams that there would be several changes to be made and a lot of problems with the computers associated with a Reatta. Link to comment Share on other sites More sharing options...
jonlabree Posted February 2, 2006 Share Posted February 2, 2006 I agree, All possible information should be gotten on this car. If some one installed this engine and got everthing to work it could become a pattern for anyone else who would be interested. We would need to know if all gauges and instrumation works as original. And most of all we would need to know about every piece that was changed or modified to make it work.From the picture it looks very neatly done. I hope we can gather enought information to attempt another one. Link to comment Share on other sites More sharing options...
Guest EDBSO Posted February 2, 2006 Share Posted February 2, 2006 <div class="ubbcode-block"><div class="ubbcode-header">Quote:</div><div class="ubbcode-body">Just for my own info, how much more hp and speed would you get if you did have a supercharged 3800 in a Reatta. </div></div>Stock my Riv with the same engine had 240 HP.I also has a smaller pulley, CAI intake, and free flow exhaust, I would expect 290 to 300HP for more an intercooler is required. Link to comment Share on other sites More sharing options...
padgett Posted February 2, 2006 Share Posted February 2, 2006 Swapping a complete power train is not that difficult, dimensions are about the same. Getting the digital dash to work properly is. How about a picture of the dash ? Link to comment Share on other sites More sharing options...
Guest maybe2fast Posted February 2, 2006 Share Posted February 2, 2006 we have talked about it...90-91 is way easier. is that a 90-91? Link to comment Share on other sites More sharing options...
padgett Posted February 3, 2006 Share Posted February 3, 2006 I disagree at least from a computer standpoint, effort is about the same as you have to match the ECM/PCM data stream to the Reatta though since the 91 has an "E" trans and integrated ABS, the wiring might be a little easier. Link to comment Share on other sites More sharing options...
Guest F14CRAZY Posted February 3, 2006 Share Posted February 3, 2006 And back to the airflow problem that Ryan talked of. The older ECM can't register enough airflow, but the '91 ECM would (for the TPI motor) Link to comment Share on other sites More sharing options...
Guest maybe2fast Posted February 3, 2006 Share Posted February 3, 2006 would a 91 computer run a 4t65E trans? in that case it would be almost plug in and play with you running the motor on OBD1 and having the chip tuned...sorry if this has been gone over Link to comment Share on other sites More sharing options...
luftweg Posted February 3, 2006 Share Posted February 3, 2006 Barney:Could it be possible for you to track down where that 89 Reatta is, so that someone here (possibly even me) might research purchasing it (IF the installation was done correctly and acceptably)? Link to comment Share on other sites More sharing options...
Guest Greg Ross Posted February 3, 2006 Share Posted February 3, 2006 <div class="ubbcode-block"><div class="ubbcode-header">Quote:</div><div class="ubbcode-body"> From the picture it looks very neatly done. I hope we can gather enought information to attempt another one. </div></div> Been there, Done that! And I might be insulted, I always considered mine pretty neatly done!Attached is a "Flash" photo from Flint-'03 Link to comment Share on other sites More sharing options...
Guest maybe2fast Posted February 7, 2006 Share Posted February 7, 2006 will the 91 4t60E computer run a 4t65E HD trans? Link to comment Share on other sites More sharing options...
Guest F14CRAZY Posted February 7, 2006 Share Posted February 7, 2006 From what Ryan at GMtuners said, no, a 91 ECM won't run a 4T65e Link to comment Share on other sites More sharing options...
Guest MauiWowee Posted February 7, 2006 Share Posted February 7, 2006 According to the parts book, there is a different vac. modulator used on a 1990 turbo equipped 4T60..........(see attachment) Link to comment Share on other sites More sharing options...
padgett Posted February 7, 2006 Share Posted February 7, 2006 I would have to look at the pinouts but suspect there are the same signals used for a 4T60E and a 4T65E, it just would not make sense to be different. *Might* be a VSS difference but that is not difficult to fix for $$$.Why did Ryan think there would be a problem ? He probably has direct experience by what some people find difficult, others find not quite so.Of course it is always easiest if you have not done it at all. Link to comment Share on other sites More sharing options...
Don B. Posted February 9, 2006 Share Posted February 9, 2006 Yep It is a Series II. Wrong year for a 1989 or any other year Reatta.It does look good. For any one asking, First Generation Superchargerin a Reatta runs mid 15's in 1/4 mile. Link to comment Share on other sites More sharing options...
Guest EDBSO Posted February 9, 2006 Share Posted February 9, 2006 sweet! Link to comment Share on other sites More sharing options...
scottzilla Posted February 9, 2006 Share Posted February 9, 2006 "Swapping a complete power train is not that difficult, dimensions are about the same. Getting the digital dash to work properly is. How about a picture of the dash ?"How hard would it be to put in an all new dash and computer on the car? Or would you have to also run a bunch of new wires? I was kinda thinking new drivetrain and new computer and such. would you have to replace all that wiring too or maybe just change the harnesses? Link to comment Share on other sites More sharing options...
redrea Posted February 9, 2006 Share Posted February 9, 2006 i defenetly do not want to re harness my reatta i was thinking more of a piggy back module that would send the stock ecm the correct waveforms for it to function properly. the wave forms would be based off the the pins that would register unreadable values. Link to comment Share on other sites More sharing options...
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