Matthew C Thank you for watching and the feedback I appreciate it! JD

Bout to watch it hope I get the same results haha

www.novak-adapt.com/knowledge/gm-crank-spacing

Jeff Newman What Transmission was it? I’m curious what the difference in reach would be between your setup and the way I did it? The reach from the Crankshaft register face to end of the adapter would be long using it outside the dished flexplate, .800” + .130”= .930” 🤔. I’m curious which transmission this will work in?

Gasratz Customs Thank you for watching and the feedback! I hope you subscribed! JD

@@HeadFlowInc Ohh Yeah! Subscribed!! Give us a follow, you might be able to help us with our projects.

Extra help, I was born in Eugene, OR. 1968 👍😎 www.novak-adapt.com/knowledge/gm-crank-spacing

Don Rutter Hopefully know for sure it works this afternoon.

Oneponycar That sucks, it can be a pain in the Arse sometimes! Very frustrating, but you are checking everything which is great! 👍

* BuildItLikeBeal Exactly why I wanted to share and save people wasting money! Good luck on your build I hope you subscribed! JD www.novak-adapt.com/knowledge/gm-crank-spacing

What’s interesting is you can use either flexplate dishes or flat when you have the bolt-on adapter; you either mount the adapter first or after the flexplate depending on which one you have. JD

Matt Gorgoglione I wish I hadn’t gone with a 3000 converter, it’s way too loose of a stall for 2.73 gears in the rear end. I swapped from 3.73’s to 2.73’s so it was manageable on the highway cruising 75 mph. Oops I’ll be switching the converter next Summer. 👍

I've used size ,35 inch tires and transfer case build so 410 gears in a wide body 10 bolt but shattered, and just snagged a newer wide suburban rear 10 with 373 gearing but instead of 8.5 tall it changed to 373 gears 8.6 ten bolt in which can handle the tires but decent on the highway, I've just put it aside untill I do the dreadful check on the weird flexplate or shattered torqueconverter noise , 😑, I'm was just updating myself on your video it's good to do as a mechanic when your doing research or find something else you missed when viewing a great explaination video like this and going to websights and just listening to advice from others🏁🙋🔧, I'm thinking about throwing a keoage torqueconverter in a th400 🏁🔧🙌✨🐎🐂

Great reference site: www.novak-adapt.com/knowledge/gm-crank-spacing

Lime Well, you could use either, I chose to use Ultra Black RTV since I know it’ll seal the threads and not let oil seep out. For some reason LS engines will leak oil out the flexplate bolt holes, so I’m told. I can’t stand a leaking vehicle, so I try hard to avoid any potential leaks. 👍

harperjmichael No, the simple ring adapter doesn’t work with a TH400. The TH400 required the “Flat” flexplate and bolt on adapter. Go to the website in the description, it breaks down which engines/Transmissions and adapters work.

He could have removed some metal from first ring adapter but real issue was the weld slag interfering.

9 minutes 44 seconds or so was issue. Everything before that was wasted time

www.novak-adapt.com/knowledge/gm-crank-spacing

Danny Rochester I’m running an aftermarket SFI flexplate now that’s dished with an extension/alignment ring. It’s crazy how many different ways there are to use the older transmissions on the LS engines. Thanks for watching and the feedback I appreciate it! Stay tuned I hope you subscribe! JD

If you have a long crank early Lq4 you literally need to just bolt the th400 to it as long as the bolt circle for the torque converter is 11.5" Nothing else needed.

tim m I didn’t/don’t have any other converters handy. I know the converter wouldn’t have reached the register on its own.

LSX Volvo Guy Interesting, I didn’t know they offered the 80e behind a 4.8, Good information!!! Thanks for sharing! 👍👍👍

Thanks. I'm swapping a 2006 express 4.8 and it already has flat flexplate with spacer. You sir saved me money and a lot of confusion on the web.

Also I ended taking 3mm off of the adapter because the snout bottomed out before it reached the .187" pull out from the Trans. Plus a little wiggle room for forward movement.

blown5.3 All the different combinations of engines, Crankshaft registers, flywheels, and transmissions is clearly outlined on the Novak web page I provided. There’s a lot more variables than most people realize. Thanks for watching! JD

HeadFlowInc hi there I watch the video you have it’s great I think you’re awesome and I have a question for you if you can answer for me please I have a th400 in the1966 Cadi I wanna swap it to 4.3 Sonoma or Jimmy engine if you think that will fit or if it’s not what should I do to make it fit thank you

@blown5.3 I'm also running a tci converter. The spacing is definitely different and I can't use those small flex plate adapters they sell online

www.novak-adapt.com/knowledge/gm-crank-spacing

I believe a TH350 uses the dished flexplate with the converter to crankshaft extension ring. Check out this link: www.novak-adapt.com/knowledge/gm-crank-spacing

Thanks for getting back to me so soon. Trying to get my 1966 chevy 2 on the road. I'm at work now but will read the forum on lunch. Thanks again. Gave you a like and sub.

MATTHEW jacobs I’ll be totally honest, the 700R4 is a weak transmission. If you were building a 100% low power cruiser they can work but if you have any real power they just can’t handle it. If you want/need an overdrive shop around and find a 4L80e. I know the 80e is more costly but it’s worth it. JD

HeadFlowInc,,,thanks for your reply. I have the complete motor and transmission from a 01 Chevy Silverado. It's 5.3. So it's best to keep the combo together. Truthfully I want to use the turbo 350 that's in the 67 Chevy pickup. Just a cruiser nothing fancy,,, Sunday burn out with my kid's.Lol

Peter. Hatch As long as you don’t have the extended flange like the early 1999/2000 6.0 then the bolt on adapter and flat flexplate will work for a TH400 or 4L80e Check out the link in the description for the break down of the engine/transmission/flexplate combos. 👍

On the Passenger side of the early truck intake there is an unused vacuum port that’s sealed, all you have to do is open the end. I’ve also drilled/tapped/installed a barb fitting to the oem plastic intakes. JD

@@HeadFlowInc Thx 👍

Manuel Figueroa The Novak guide shows the truth about all the old school transmissions to the LS engines! Thank goodness I found this information on what works! JD www.novak-adapt.com/knowledge/gm-crank-spacing

Omar Paredes I bought my starter from Advance Auto Parts. All the LS starters should be the same, I bought mine to fit a 2002 Silverado. Part numbers vary depending on what brands your parts store carries. Tell them you need a starter for a 2002 Chevrolet Silverado 2500 with a 6.0 👍

Perfect ! Thanks again

TFETTER There’s lots of great information available now through ITC billet and the Novak website. Good luck on your project! JD

@@HeadFlowInc thank you Sir, love the channel 👍

www.novak-adapt.com/knowledge/gm-crank-spacing Drive shaft, shifter and Torque Converter. Maybe move or modify the crossmember I’m not sure. JD

@@HeadFlowInc thanks Very helpful !!👍

No I did not need spacers, I’ve never had good luck running spacers without having vibration issues. If you need spacers they need to be precision flat and all exactly the same. I wouldn’t waste time or money on a B&M converter either. JD

@@HeadFlowInc I’m running the same flexplate with bolt in spacer with a th400 converter from jegs which is said to be the exact same as b&m. I’m not running spacers either. Thank you

Try this link, I’ve heard others having issues finding a starter or needing shims. www.novak-adapt.com/knowledge/gm-crank-spacing

Tommydco Yes, check out the link in the description, it will clarify everything. Thanks for the feedback I appreciate it! JD

Sorry for the late reply, many of the flex flights come with it if it’s specified for a 6.0 80e. Unfortunately, I don’t know for sure which manufacturers included it or not so just make sure to verify before you purchase..

It depends on which transmission and which engine/crankshaft register length. One way doesn’t fit all applications. www.novak-adapt.com/knowledge/gm-crank-spacing

*Flywheel: 2001-07 truck. NFW1050 *Clutch: 2002 Camaro Z28/SS or better. *Bronze extended reach pilot bushing. #26112 This should be a decent place to start doing an LS swap if you keep the 5 speed.

@@HeadFlowInc thanks man i know about old supras 5mge 7mge like that lov the help

GreyC5 You would not need a clutch assembly to run an automatic transmission. If you are going TH400 then yes the bolt on 6.0 adapter and flat flexplate is what you need. You will also need a different length driveshaft and crossmember to make it work. Iirc

HeadFlowInc ok. And I was told that with some models it takes a clutch to start the car and put it in reverse. Maybe they misspoken? Lol. How much do you think that would run me to have someone create that stuff.

GreyC5 There are specialty Race transmissions like a Liberty, Jerico or similar where it launches with a clutch and shifts like an automatic. This does not apply to a regular automatic like a TH400. Honestly, I have no idea how much it would cost, to many unknown variables. Parts quality/price, level of work done/needed, and Labor cost per hour.

HeadFlowInc I gotcha. Thank you for the insight and knowledge . I appreciate it man.

GreyC5 Good Luck make a build sheet so you know how much it’s going to cost. This way you won’t have as much down time due to unforeseen cost. 👍

Very sorry for the late reply www.novak-adapt.com/knowledge/gm-crank-spacing

Nope you’re wrong, but thanks for watching! Go learn more about LS to old school GM transmissions here. www.novak-adapt.com/knowledge/gm-crank-spacing

M Gar TH400 doesn’t use a kick down cable, it uses an electric solenoid triggered by a micro-switch. You can setup the kick down by either mounting a switch near the throttle on the engine or throttle pedal. I want to hook mine up but haven’t done it yet. Thanks for watching and the question! JD

@@HeadFlowInc are there any conversion kits for connecting that switch or will I just have to fabricate something up

I think I have the solution for my application its called a pedal kickdown switch. It bolts right up to the pedal assembly on a 72 chevelle. I originally had the switch located on the carburetor but since I will be swapping to an Ls with drive by cable and throttle body I had to find a different option for the kickdown switch.

Thanks for the tip, I’ll look into one of the peddle switches, I’d like to have a functional kick down! JD

It depends on whether you have a flat flex plate or a dished flex plate. If you have a flat flex plate the adapter goes on the crankshaft first, if you’re running a dished flex plate you put the adapter on the Transmission side of the flex plate. It all depends on which application you have.

@@HeadFlowInc I have the dish flex plate. Bevel side

I also had to notch the plate to get in to line with the TC

Using early model 4l60E

Check out this guide: www.novak-adapt.com/knowledge/gm-crank-spacing

jeremy rock Maybe 🤷‍♂️. I know I needed way more clearance than what the bb was blocking, at least I think. I don’t have the measurements off hand but there is a significant difference between the “reach” of the “Ring” & dished flexplate compared to the “Bolt on” adapter & flat flexplate. Either way you choose, be sure to verify the required space between the seated torque converter and mounting surface on the flexplate. 👍

HeadFlowInc thanks for the advice I’m going to be mating my 02 4.8 to a th350. The 4.8 was originally mated to a manual tranny I think I will go with the flex plate you used I don’t like the idea of egging the holes out to the torque converter

jeremy rock Never grind the tabs on the converter, it’s best to work the flexplate. But like you saw this flexplate worked fine no mods. 👍

meathead1011980 This is a 6.0 flexplate 😉. All 6.0 flexplates are “Flat”, the early 6.0 has a .400” extended crankshaft register/hub 1999-2000 used the flat flexplate no adapter. The 2001-up 6.0 uses the bolt on adapter, seen in my video, to properly locate the flexplate to the starter. 👍

HeadFlowInc yeah I got the years mixed up... mines is made on to the plate... I can’t unbolt it... this is good info because I didn’t know that... thank you my guy

Adapter is for flat flex plate

I have 2006 6.0 on a 4L80E it's the original engine with the original trans ..the problem I'm having is that the flexplate keeps breaking around the bolts which is around the bolt on adapter(spacer)..do you know what could be the cause of this?..its my work van and it has 523,000 miles runs great and shifts smoothly. I never had any work done on the trans except change fluid and filter..

I forgot to mention, it's a flat flexplate with bolt on spacer from autozone (pioneer brand) 5th one purchased

I’ve gone through 3 converters so far! I haven’t installed the 3rd one yet. 1. Don’t waste your money on a B&M anything especially the Holeshot 3000 it’s cheap junk. 2. I had decent success with a TCI 10” Super Street Fighter w/anti ballooning plate 3500-3800. 3. New converter is the “Entry” level boost PTC 10” w/anti-ballooning plate spec’d for my combo. *** The best Bang for the Buck converters are the Jegs XHD 10” built by TSI. Decent price and a solid/proven performer up to 800+ wheel HP. JD

@@HeadFlowInc thanks for the quick response and the advice!

www.novak-adapt.com/knowledge/gm-crank-spacing www.jegs.com/i/JEGS/555/601010K/10002/-1

Is there suppose to be space between the flywheel and torque converter

@HeadFlowInc I have the flat flex plate and the spacer and there is still a gap between the flex plate and the torque converter what should I do now

Yes very loose B&M Holeshot 3000 converter. It didn’t stay very long, I’m using a TCI Super Street Fighter 3500-3800 w/anti-ballooning plate #241002 until I can afford to upgrade. JD

Do you think the B&M 20484 would work good

I’ll be honest, I’ve never used a B&M converter I’d recommend to anyone because they’re cheaply made for the price. You can get a entry level PTC converter for +- $500.00-$550.00 shipped. I can’t justify spending over $400.00+ on a B&M. The only off the shelf converter id recommend is the Jegs XHD converters made by TSI. Currently on sale for $337.99 are excellent quality with dual anti-ballooning plates rated at 800hp. Check them out in the stall range you need, if going turbo make sure it’s big enough to get into boost. JD

I'll let you know I found a pretty decent torque converter for really cheap look these guys up Freakshow torque converters

Keith Walker It depends on which flexplate you use, I would not use the ring adapter with a dished flexplate it’s a cheesy pos but lots of people do. It’s a choice we all have to make. JD

I hope so! Sorry I just found this post from a year ago! JD

That’s a bold face lie, I’m sorry you’re so lonely.