HOW TO: Swap a Th350 to an LS engine early vs late flexplate comparison
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- เผยแพร่เมื่อ 15 ม.ค. 2019
- I have made videos before describing how I mate an old transmission to the LS engine. But I've never had both different flexplates side by side. On the early 99-00 4.8s and 6.0s they use a longer crankshaft and flat flex plate to work with the 4l80e. With engines that used the 4L60e Gm used the dished flexplate which required the step bushing style spacer. Fortunately for what I am doing with the 6.0 I need no spacer. The only mod I need to make is to oval out the mounting holes on the factory flexplate..
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Thank you for this video, I have a early 2000 LQ4 I’m mating to a TH350 and was worried the flex plate didn’t quite line up to TC. So, drilling out crossed my mind but wasn’t sure!!! Thank you!
Appreciate that dawg I had to drill out those holes on the flex plate today putting a built 350 turbo with a 2500 stall behind that ls.
I used Chevrolet's spacer, longer bolts and a flat flexplate that I got from a 4.8 that had a 4L80. My friend at a machine shop drilled new holes for me. I took my convertor along so he could accurately locate my holes to be drilled. He made some spacers for the convertor bolts so I had the 1/8 inch clearance with the convertor pushed back into the trans. The 1/8 clearance is needed so the convertor doesn't pull out of the pump too much.
I just put a th350 in a 2000 silverado with a 4.8 only because of your videos ....so a big thanks to you sir ... watched at least 10 times but put it in with no trouble and shifts great..keep them coming
Glad to hear it
Can you help me with my swap
Need all the help I can get
Where do you live
Awesome video brotha!
GREAT video!
Very informative
I have a 5.3 dished flexplate I have the swap flexplate and I have the cockring spacer the converter is all way in Trans and I have a big gap and the end of the converter is not all way in the crank where I put the cockring and pointers
TCI makes one too and so does ICT the adapter
Great info. Why not just go with a 4L60 and have overdrive to boot...
Hey what size bolts did you use for the torque converter to flexplate on the th400
I have a 1992 454 ss truck with a early 4l80e transmission. I also have a 1998 C5 Ls1 im swapping into it. Do you know if that early 4l80e will work with the ls1 engine? If so what do you think I will need to make it work?. Thanks in advance.
Just wondering. I got this set up for my Truck. The 350th Im using has a 3600 stall on it. Do you know if these have issue with larger stalls, Motor is just stock 5.3 with Long tubes, straight pipe ,Sloppy stage 2 cam and beehive springs . other than that all stock .
Beeterolds what about the kickdown cable ? Vacuum line ?
i just swapped out my sbc/th350 and attached my 5.3 LS to TH350 with the collar/sleeve but the convertor bolts seemed short and i had to suck the convertor away from trannyy about 3/8 of an inch. is that a problem or normal?
What about a 98 z28 LS1 with 4l60E going to TH400. What do I need if using factory flexplate? Also, I have a 3600 rpm stall TC in the car now.. Do I need to swap to a TH400 torque converter?
im think about LS swap in a 79 corvette will my 350 headers work because it has side
pipes
so i should keep entire throttle bracket with kickdown cable to resuse my th350?
Do you know how you remove that spacer that hammers into the back of the crank if you are switching to a manual transmission?
5.3 with a turbo 400 do I need that spacer on the converter ?
Will I need the adapter on a 2002 6.0 going to a turbo 400
Is there a difference in a TH400 Flexplate and a 700R4 flexplate on a 1982 Chevy 350 engine ? I just swapped the TH400 out of my old 82 Chevy 350 cu.in. Cube van and put in a 1991 700R4. I had the driveshaft shortened and a new 27 spline Slip yoke installed...It bolted right up...but I am getting a rumbling noise near the Torque Converter....not sure what it is... I haven't taken it out on the road yet... as I don't want to make things worse !
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Ok I gott a question I'm not a transmission guy but I have a 2500 stall brand new in box I got a steal for 100 bucks I have a 4.8 ls your converter bolt holes are on the back like mine ..so di I take the flexplate off and bolt it in through the back if I do will converter bolts be hitting anything cus I looked and thiers not much room for a head of a bolt to b sticking out I have looked everywhere this is only video were your converter bolt holes are like mine ..so take flexplate off volt converter to it or what ???? Any help would be grateful..thanks
Can I use this method with a 5.3l ? Everything I see is with the 4.8 and 6.0.
Hey my friend I have a question? I have a 6.0 and a 02 4160e transmission what flywheel it will work for my application can you please let me know if you can thank you!
So just to be CLEAR & CONCISE, my 2003 Ls 5.3L will bolt up to my 84 cutlass th350 with just that spacer/sleeve thing and probly die grinding the flexplate?
As long as your th350 has chevy bell.
@OMRY1561 - 4 min ago
Hi nice video Great information
I have 1967 cadillc th400 and 429 engine
Do I need any adapter if i install 350 It1 gen2 1996 to the
th400 thank you
Hey man not on topic of this vid but when using the msd 6014 to fire the packs it says it needs to hooked up to a "fused" battery with your 30 amp relay as it shouldn't be hooked up directly to 12 volt source. Are you using on if the "fused" adapters on your battery or the 30 amp relay?
I'm using the 12v keyed source that originally powered the distributor.
@@beeterolds I was wondering about that but wasn't sure if people did it now I know man thanks.
I own a 2002 Chevy 2500hd. Is it one of the years that utilizes the longer crank shaft?
only 99 and 2000 had the long crankshaft 2001 and up used a spacer
What the part number for the cockring? Please?? Thanks in advance. U r awesome
eBay LS transmission adapter.. there's a billion listings
@@beeterolds thanks. Found it. On the way. Thanks again.
i have 700r4 is it ez to put on a LS
I have a 2003 6.0 with the longcrank shaft. I didn’t use the cock ring and my th350 isn’t wanting to go into drive.
Unrelated issues friend
Use the ring , or flip your
Plate? Probably have the wrong converter in, had it happen to a friend, trans didn’t wanna rotate
so you are saying on an early 6.0 the only mod needed is to elongate the converter bolt holes? ever had an issue with the th350 converter not allowing the bell housing flange to meet up? like the converter is out to far. i think its in all the way, i tried for a good while to get it further in but no luck, trying to figure this out.
Add bushings. We had that issue with a 4.8
@@beeterolds if I add anything it’s going to be even further out. I figured it out though. Torque converter wasn’t all the way in.
Does it have to be a non locking th350....because i have the th350c with the lock up that came origonal with my truck and want to keep it so do i just hook back up the factory wirirng or what?
Or dont use it.
@@beeterolds so it's good to run without any of the electronics hooked up just vaccum and the kickdown?
@@marquesmoss5283 ya. Itll be fine
You just wont have lockup
Is this required with a 09 6.2
Are those SBC engine cradles or are they specific to the LS engine?
Specific to the LS
Do you have to expand flex plate holes on dished as well?
Yeppers
Hey boss so can I swap a 6.0 flex plate onto a 5.3 liter?
You're still going to need an adapter.
6.0 has adopters
Ok, so basically the 350 engine and LS have the same trans bolt patten?
Yes except for one bolt they ommitted
Can you make a video installing a 5.3 with th350? And how everything gets connected
I already did
@@beeterolds ima look for it right now
Couldn’t find it can you send the link?… im gonna put a 5.3 with th350 in my el camino and want to get all the cables in like yours.. thanks also
Do you have to use longer bolts to mount the converter to the flywheel?
Yup and spacers
BeeterOlds can you point me in that direction? I have everything else I need for my swap. 4.8 to th350.
I hate to be that guy, so if you have a dished flexplate and buy the spacer, can you keep the dished flexplate? Or must you buy the spacer/flat flexplate
Dished flywheel. Keep the flywheel and the spacer.. Flat flywheel typically found on early 4.8s and 6.0s.. With long cranks. Spacer usually not needed.
BeeterOlds much appreciated thank you! Looks like I will be buying the spacer thanks
Was thinking I’d be stuck buying an expensive flywheel
1:22 lmaooooooo
Is this the same for 99-2000 6.0 with 4l60?
I wasn't aware of.any 6.0s that came with the 4L60e
It doesn’t trying to make it work
Need a dished flexplate.
Yes some esclades had a 4l60 I pulled a LQ9 out of an 02 the other day.
That's for all year 6.0 or just the 99's ☝
99 used the long crank as did some early 2000s. The 5.3 in all yrs used the shorter crank and dished flex plate
Some you gotta use that goofy doughnut spacer and longer bolts
Not needed.. the Step bushing is all you need. No bolts required
@@beeterolds usually yes. I cant remember the reason why but i had to use jegs 555-601010k
@@dvjracing5947 I've never had to.
whats in the dryer sounds like shoes
My overalls 😆
Is that your clothes drying in the background?
Full of my overalls lmao
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