Grand prix LS1 build
#1
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
I finally test fitted my ls1 on my 85 GP... I used the Transdapt 4595 1in setback plates after grinding on them a bit, ground down a couple bolts that were hitting the webbing on the block and bolted in the factory clamshells.. Only issue i still have is the alternator not fitting in but i'm going to install the hood and see what clearance i have. If good then i'm ordering the speedway high mount alt kit, some other alternative.. Anyways here are some pics![Grin](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_grin.gif)
![](http://i387.photobucket.com/albums/oo316/netochingon1/20120321_132437.jpg)
![](http://i387.photobucket.com/albums/oo316/netochingon1/20120321_132414.jpg)
![](http://i387.photobucket.com/albums/oo316/netochingon1/20120321_132650.jpg)
![](http://i387.photobucket.com/albums/oo316/netochingon1/20120321_132618.jpg)
![Grin](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_grin.gif)
![](http://i387.photobucket.com/albums/oo316/netochingon1/20120321_132437.jpg)
![](http://i387.photobucket.com/albums/oo316/netochingon1/20120321_132414.jpg)
![](http://i387.photobucket.com/albums/oo316/netochingon1/20120321_132650.jpg)
![](http://i387.photobucket.com/albums/oo316/netochingon1/20120321_132618.jpg)
![](http://i387.photobucket.com/albums/oo316/netochingon1/20120321_132356.jpg)
#2
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Test fitted some f body cats factory, drivers side seems to fit good BUT passenger side hits the floorboard...
haven't installed the trans yet which could affect the clearance, i found out by googling up the numbers it is actually a 4L65E. Guy i bought it from said it was a 4l60, According to the numbers, it's a 2004 4L65E from a 4x4. He included a 2wd tailshaft housing and a dipstick. Also he rebuilt it with a "power pack clutches, beast sunshell, Corvette servo and a 2k stall converter.... What mods would have to be done to the stock 99 LS1 computer to run this trans? It originally came with a auto trans. Also found a T56 from a 01 Camaro for 1K, Would it be better to pick it up instead? I really would love to row my own gears
But i would have to find that $$ somewhere...
![Sad](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_sad.gif)
![Driving](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_driving3.gif)
Last edited by 85GPLEf41; 03-28-2012 at 04:02 AM. Reason: spell check
#6
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Finally got my trans crossmember done.... Hope so! I did a trans crossmember 2004r mod..
![](http://i387.photobucket.com/albums/oo316/netochingon1/20120411_141216.jpg)
![](http://i387.photobucket.com/albums/oo316/netochingon1/20120412_130322.jpg)
![](http://i387.photobucket.com/albums/oo316/netochingon1/20120411_141237.jpg)
welded in new c channel
![](http://i387.photobucket.com/albums/oo316/netochingon1/20120412_233425.jpg)
but was off on wrong angle..
![](http://i387.photobucket.com/albums/oo316/netochingon1/20120412_234759.jpg)
redid the trans mount now..so i cut it off and redid it..
![](http://i387.photobucket.com/albums/oo316/netochingon1/20120424_200939.jpg)
so angled the the crossmember and it seems to work now..
![](http://i387.photobucket.com/albums/oo316/netochingon1/20120424_200600.jpg)
![](http://i387.photobucket.com/albums/oo316/netochingon1/20120424_200804.jpg)
![](http://i387.photobucket.com/albums/oo316/netochingon1/20120424_200950.jpg)
trans weight is all on it now.. and clearance is way better now..
![](http://i387.photobucket.com/albums/oo316/netochingon1/20120411_141216.jpg)
![](http://i387.photobucket.com/albums/oo316/netochingon1/20120412_130322.jpg)
![](http://i387.photobucket.com/albums/oo316/netochingon1/20120411_141237.jpg)
welded in new c channel
![](http://i387.photobucket.com/albums/oo316/netochingon1/20120412_233425.jpg)
but was off on wrong angle..
![](http://i387.photobucket.com/albums/oo316/netochingon1/20120412_234759.jpg)
redid the trans mount now..so i cut it off and redid it..
![](http://i387.photobucket.com/albums/oo316/netochingon1/20120424_200939.jpg)
so angled the the crossmember and it seems to work now..
![](http://i387.photobucket.com/albums/oo316/netochingon1/20120424_200600.jpg)
![](http://i387.photobucket.com/albums/oo316/netochingon1/20120424_200804.jpg)
![](http://i387.photobucket.com/albums/oo316/netochingon1/20120424_200950.jpg)
trans weight is all on it now.. and clearance is way better now..
![](http://i387.photobucket.com/albums/oo316/netochingon1/20120424_200836.jpg)
Last edited by 85GPLEf41; 04-26-2012 at 12:22 AM.
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#8
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Also here are a few more pics of the high mount alt kit form Speedway,
![](http://i387.photobucket.com/albums/oo316/netochingon1/20120406_115445.jpg)
![](http://i387.photobucket.com/albums/oo316/netochingon1/20120406_002217.jpg)
![](http://i387.photobucket.com/albums/oo316/netochingon1/20120406_002229.jpg)
![](http://i387.photobucket.com/albums/oo316/netochingon1/20120406_002123.jpg)
The alt fits good now but the "cooling duct" hits the plug wire and the sensor harness is too close as well... I was told to get a truck alt and that would solve that issue. Gonna test one out and see. Gonna notch my heater box soon for the passenger side coil packs next....any ideas??
#9
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I have a truck alternator that you can use for test-fitting, should save you the hassle of buying one. Besides, it makes for a good excuse to meet each other & have a beer...
![Winky](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_wink.gif)
![Cheers!!](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_cheers.gif)
#11
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
More work done this weekend, My buddy Nate cam over and helped notch and fiberglass my heater box for coil clearance. I cleaned, painted and modified my 8.5 for the rear LS1 disc brakes upgrade.. Some pics of the box notch just gotta paint it now.
![](https://i387.photobucket.com/albums/oo316/netochingon1/20120427_220509.jpg)
![](https://i387.photobucket.com/albums/oo316/netochingon1/20120428_004219.jpg)
![](https://i387.photobucket.com/albums/oo316/netochingon1/20120428_225610.jpg)
![](https://i387.photobucket.com/albums/oo316/netochingon1/20120428_225553.jpg)
![](https://i387.photobucket.com/albums/oo316/netochingon1/20120428_225627.jpg)
The rearend got new bearings and seals as well.
![](https://i387.photobucket.com/albums/oo316/netochingon1/20120428_004206.jpg)
![](https://i387.photobucket.com/albums/oo316/netochingon1/20120427_220509.jpg)
![](https://i387.photobucket.com/albums/oo316/netochingon1/20120428_004219.jpg)
![](https://i387.photobucket.com/albums/oo316/netochingon1/20120428_225610.jpg)
![](https://i387.photobucket.com/albums/oo316/netochingon1/20120428_225553.jpg)
![](https://i387.photobucket.com/albums/oo316/netochingon1/20120428_225627.jpg)
The rearend got new bearings and seals as well.
![](https://i387.photobucket.com/albums/oo316/netochingon1/20120428_004206.jpg)
![](https://i387.photobucket.com/albums/oo316/netochingon1/20120429_214718.jpg)