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im trying to gather as much info before i swap in a 5.3L in my 82 c10. my question is i have a Th400 that i want to use with the 5.3L, will the th400 bolt to the ls motor and which flywheel will i have to use? are the converters the same size. oh and the motor is out of a 03 tahoe. any help would be appreciated.
The trans will bolt up no problem. But one of the holes wont line up. 5 out of 6 bolts will hold it in place without any issues. I am not sure on the flywheel, but they are only $100.00. I used an ATI SFI Flexplate (I dont have part numbers). Converters also not a problem. I used a 10" converter on my last build (LS1) but should be similiar.
Any questions, email this guy, he can answer anything you may need CLICK HERE That is the guy who built my last trans, you can see it in action in their videos, the offroad trucks (the one with the lights over the cab).
thanks i sent him an email with the questions, hopfully he will answer my questions. but if anyone can help me out here i apriciate it. the swap is kinda making me think twice, from the info i have gotten so far its takes alot of money for a swap like this, i dont know if i should go old school GEN 1 carb setup, i rather go ls1 setup but i dont know if i can handle the job myself. my plans are still for an ls1 motor but im going to study everything well before i get started.
can anyone help me on parts what is needed to mount the two together, i have a 03 5.3L flywheel the stock TH400 flywheel and converter. will any of this work.
You should Pm Virgil (mean05) or Moze (Damnyankee) about this, they are both in the process or switching over to 400's, so they would have an idea about the flexplate issue and give you some advice!
sweet i forgot that virgil was doing the 400 swap on his truck.
use the 03 flexplate and starter and have a converter made with the ls back and the th400 hub, i had Art Carr build me one for my setup...everything else works fine, your 82 would have came with a th350 or 400 so the DS and tranny mounts should stay the same
so your saying that a regular th400 converter wont bolt up to a ls syle flexplate? dont tell me that! i dont wanna have to buy another converter as well.....!!! if i doo im going with a 4k stall and say screw it lol dont be intimidated by the fuel injection. i was at first also, but its way more simpler than you think! and you will love it sooo much more!
you can buy a crankshaft spacer, longer bolts and flat flywheel from crateenginedepot.com to use a stock TH350 or TH400 converter on an LSx type engine. 99-2001 6L engines have the extension built into the crankshaft already.
Found one for sale CLICK HERE
Here is another thread about it CLICK HERE
can anyone help on what to do with the vss, im going to use the stock gauges from the 82 c10 and the speedo cable goes to the tranny, ive been reading that you need the vss so it can run right? where wil it go.
go to dakotadigital.com and get one of their encoders for your application. If you dont see it on the site call them and they'll fix you up.
thanks red this forum is awesome, there are some knowledgeable people here.
Did James at Racetrans get back to you?
when i did my 5.3 700r4 on my truck all used was the spacer . it bolted up to the flexplate fine . it was 2000 model 5.3
yeah they they told me to fill out a specification sheet so he can set me up with the parts i need.Quote:
Originally Posted by sandking
Read THIS It should answer all your questions :D
for some reason i cant view it because it kicks me out of the internet. but ill keep trying.Quote:
Originally Posted by sandking
This is the link..............
https://secure.advanceadapters.com/i...162533_lrg.jpg
(P/N 712500A) Gen 3 LS Series Flexplate for use wih non-LS series automatic transmissionsHome > Conversion Parts & Accessories > Clutch Components > (P/N 712500A) Gen 3 LS Series Flexplate for use wih non-LS series automatic transmissions
Suggested Accessories | Customer Reviews(P/N 712500A) Gen 3 LS Series Flexplate for use wih non-LS series automatic transmissions
0 Reviews OverviewLS-Series Engine to TH350/700R/TH400 Flexplate Kit
Regular Price: $153.68Our price starting at: $153.68 0
$0
GalleryDescriptionProduct Details:
FEATURES
• Technical Document 712500A Manual
DESCRIPTION
Advance Adapter
This custom flex plate kit is designed to adapt the Gen III / LS series to the GM TH350, TH400, and 700R4 transmissions. The kit includes a flexplate, 11mm flex plate bolts, crank spacer, collector gaskets, stock exhaust manifold rings.
Gen III / LS Engines
The new style Gen III / LS series engines (4.8, 5.3, 5.7 LS1, 6.0, 6.2) all have the same crank stick out which is .400” closer to the block than the old 350 V8. The Gen III / LS series crank bolt pattern is different than any other GM crank as to the bolt pattern on the flex plate. Only Gen III / LS series flexplates fit these engines!!!
Since a Gen III / LS series flexplate only fits a Gen III / LS series and the engine crank is recessed .400”. There are a few unique things about the torque converters that bolt to the flexplate. The spacing of the flexplate from the back of the block is the same as early GM blocks. The flexplate is dished out .400” to compensate for the crank. The differences come into play as to the bolt pattern of the torque converter to the flexplate and the snout length of the torque converter.
How do we adapt TH350, TH400, 700R4 to a Gen III / LS series engine? We offer a custom flexplate to fit a TH350, TH400, 700R4 and a crank spacer that compensates for the shorter engine crank.
Note: This Advance Adapter kit does not work with a 6.0 engine with cast-iron cylinder heads.
thats some good info. it seems im learning something new everyday about the swap, which is a good thing, so when i do the swap i have alot of questions answered.Quote:
Originally Posted by sandking
i think i know what you talkin bout..does it run from trans to gauges or to PCM?Quote:
Originally Posted by RedHeartbeat
cuz if i use the tranny i got imma need same thing
its an electric motor that will spin the cable drive. It plugs into the transmission.