Well Ive gotten alot done on the car converting it from a 521BBF with a 3000 stall non lockup C6 which was fully built and very large tranny cooler. I wasn't racing the car as much or at all in the last year as the nearest track closed and was about 45 min away so I would have to rent a car trailer to get the car up. I also started driving the car more to car shows at are like 10-15 miles away and the cruising at 55mph at 3K was killing my MPG and causing alot of uneccessary heat buildup in the trans and motor.
So I decided it was time to swap out the C6 which only had 500 miles on it with a GM overdrive to help improve MPG, heat and the lockup feature sure is nice.
You can choose from the 2004R, 700R4, 4L60E, 4L80E for GM or you can do a AOD, E40D and 470W transmission from ford. My build only covers the GM conversion as thats the route i wanted to do. DUE NOTE that the 2004R, 700R4, AOD are the only mechanical transmission out there that will NOT require some form of ECM or electronic transmission control. Thus this makes it alittle cheaper and easier to swap into an older vehicle depending on the route you go. I decided to go with the 2004R as it has a better gear spread than a 700R4 and a AOD would cost alot more to build up than the 2004R to retain the lockup (if you can on the AOD) and handle gobbs of power. The 2004R is a weak trans stock behind most models except the buick turbo 3.8L but all can be built to handle 500-1000hp reliably.
2004R gear spread.
2.74:1
1.57:1
1:1
.67:1 overdrive with lockup converter
Transmission upgrades I performed with a good core trans from a 87 monte carlo with a 305. Cost me 125$ from a somewhat local guy. I purchased a $1400 rebuild kit from CK performance (hes the top guy for these transmissions) that included upgraded frictions/steels, Billet servo, hardened sun shell and stator, wide band, Valve body recalibration and shift kit, his 300 page manual or "bible of 2004Rs" and of course all his BILLET 3040 internal parts. The parts include billet input shaft, forward drum, and overdrive planitary. Built to these specs the trans will handle 800HP/tq no problem and will retain the lockup feature (good luck with that on an AOD). These trans can be built using a cheaper kit (basically just remove the billet input shaft and OD carrier) and that will allow it to handle 575hp/tq all day and thats about 800-900$. Adding the billet parts later will run you about $700+ so its cheaper to get it all at once and get a discount. I purchased a Hughes performance cast aluminum deep pan which is required over 500hp due to case rigid which the cast pan helps alot with, that cost me $179, and a poly trans mount for $20, plus a new mechanical billet speedo (thrashed the old one getting it out) plus a electronic speedo converter both items, $25 and $45 for the converter. I also got a cheap converter lockup kit from ebay for $20 which I wire up with a single 12V line to the trans to lockup the converter, super simple and easy.
Converter time, i decided on a cheaper 10" 2600 stall with lockup good for about 600hp and a small shot of NOS. The converter has to be extended 1/4" to work with the TCI kit I purchased, this includes the mounting pads and the converter pilot. Total cost for the converter was $375. If I decide to upgrade to a billet 1000hp converter it will cost me an extra $350, but not going there yet lol.
TCI adapter kit for GM trans is part # 529700 and costs $489 i believe. comes with adapter SFI flexplate, 1/4" mid plate adapter and neccessary hardware and crank pilot sleeve. This is where I had most of my problems which I will note.
I used a Lokar 2004R universal braided TV cable setup which goes with the other Lokar throttle brackets and such.
I will post a total cost so far but Im hoping to come in at under 3K or close to it. I still need to get a new driveshaft so that is not included yet. I'm going to post pics and stuff after I get back from work.
So I decided it was time to swap out the C6 which only had 500 miles on it with a GM overdrive to help improve MPG, heat and the lockup feature sure is nice.
You can choose from the 2004R, 700R4, 4L60E, 4L80E for GM or you can do a AOD, E40D and 470W transmission from ford. My build only covers the GM conversion as thats the route i wanted to do. DUE NOTE that the 2004R, 700R4, AOD are the only mechanical transmission out there that will NOT require some form of ECM or electronic transmission control. Thus this makes it alittle cheaper and easier to swap into an older vehicle depending on the route you go. I decided to go with the 2004R as it has a better gear spread than a 700R4 and a AOD would cost alot more to build up than the 2004R to retain the lockup (if you can on the AOD) and handle gobbs of power. The 2004R is a weak trans stock behind most models except the buick turbo 3.8L but all can be built to handle 500-1000hp reliably.
2004R gear spread.
2.74:1
1.57:1
1:1
.67:1 overdrive with lockup converter
Transmission upgrades I performed with a good core trans from a 87 monte carlo with a 305. Cost me 125$ from a somewhat local guy. I purchased a $1400 rebuild kit from CK performance (hes the top guy for these transmissions) that included upgraded frictions/steels, Billet servo, hardened sun shell and stator, wide band, Valve body recalibration and shift kit, his 300 page manual or "bible of 2004Rs" and of course all his BILLET 3040 internal parts. The parts include billet input shaft, forward drum, and overdrive planitary. Built to these specs the trans will handle 800HP/tq no problem and will retain the lockup feature (good luck with that on an AOD). These trans can be built using a cheaper kit (basically just remove the billet input shaft and OD carrier) and that will allow it to handle 575hp/tq all day and thats about 800-900$. Adding the billet parts later will run you about $700+ so its cheaper to get it all at once and get a discount. I purchased a Hughes performance cast aluminum deep pan which is required over 500hp due to case rigid which the cast pan helps alot with, that cost me $179, and a poly trans mount for $20, plus a new mechanical billet speedo (thrashed the old one getting it out) plus a electronic speedo converter both items, $25 and $45 for the converter. I also got a cheap converter lockup kit from ebay for $20 which I wire up with a single 12V line to the trans to lockup the converter, super simple and easy.
Converter time, i decided on a cheaper 10" 2600 stall with lockup good for about 600hp and a small shot of NOS. The converter has to be extended 1/4" to work with the TCI kit I purchased, this includes the mounting pads and the converter pilot. Total cost for the converter was $375. If I decide to upgrade to a billet 1000hp converter it will cost me an extra $350, but not going there yet lol.
TCI adapter kit for GM trans is part # 529700 and costs $489 i believe. comes with adapter SFI flexplate, 1/4" mid plate adapter and neccessary hardware and crank pilot sleeve. This is where I had most of my problems which I will note.
I used a Lokar 2004R universal braided TV cable setup which goes with the other Lokar throttle brackets and such.
I will post a total cost so far but Im hoping to come in at under 3K or close to it. I still need to get a new driveshaft so that is not included yet. I'm going to post pics and stuff after I get back from work.