They make spacers to shim between the flexplate an crank. There's a couple different offsets from the factory on LS's depending on years. Need to get the bellhousing mounted to the block first to find the distance from the crank flange to the front pump of the transmission. You don't want to pull the torque converter back so far it doesn't engage fully or vice versa where you cram it in an crush the pump.
On the bellhousing adapter, the bolt heads will keep the bellhousing from mating up. I never got the adapter plate to work, it needs the mounting holes to be beveled and flat headed bolts that will counter sink. Huge headache for sure! I’ll be curious to see how you get the adapter plate to work with more than the lower 4 bolts... 👍😉. JD
I was running a bop th350 on my 4.8 with just the 2 bolts down by the dowels that line up.....worked fine for me......then when I swapped in my 370" I went to a 4l65e. ......I'm starting to regret it
When I adapted my pontiac v8 to 700r4, I had a choice between purchasing a $50. Adapter plate which was 1/8 inch thick with a protruding nut like yours, or a $100. 5/16 inch thick adapter with the hole treaded, eliminating the nut. I chose the more expensive plate and have no problems. My instructions said to use supplied washers to take up the gap between the flex plate and the converter allowing for 1/6 inch clearance gap before bolting the converter to the flex plate. Hope this helps.
I think you should mount the trans to the block and measure how far the converter pulls out of the trans to mate up first. That’s the spec that matters, your converter should have directions saying that it can very by a certain amount and using a washer to shim between the converter and flexplate is normal and expected.
Everything looks good I didn’t use any adapter plate your going to miss out on a bolt but it’s not a problem people use them just like that on the track it will handle a ton of Hp and about the space on the torque converter bolt up the transmission and put washers in between for spacers and send it
Throw, your nice bushing, in the lathe and, turn it down, .125-.1875, or what you need. I'm surprised, it wasn't dead on though. Maybe for stock torque converter? Nice piece!
They make spacers to shim between the flexplate an crank. There's a couple different offsets from the factory on LS's depending on years. Need to get the bellhousing mounted to the block first to find the distance from the crank flange to the front pump of the transmission. You don't want to pull the torque converter back so far it doesn't engage fully or vice versa where you cram it in an crush the pump.
I agree.
I definitely learn a lot from watching your channel your fab work is genius thanks 🙌👍✌
Pretty Shure I'm about to go through these on a 1984 Fleetwood 4.1l ht4100 2004r to a LS hopefully possibly sbc but I'm not ready to do that yet
On the bellhousing adapter, the bolt heads will keep the bellhousing from mating up. I never got the adapter plate to work, it needs the mounting holes to be beveled and flat headed bolts that will counter sink. Huge headache for sure!
I’ll be curious to see how you get the adapter plate to work with more than the lower 4 bolts... 👍😉. JD
Ya me too. Lol itll take some work thats for sure.
I was running a bop th350 on my 4.8 with just the 2 bolts down by the dowels that line up.....worked fine for me......then when I swapped in my 370" I went to a 4l65e. ......I'm starting to regret it
When I adapted my pontiac v8 to 700r4, I had a choice between purchasing a $50. Adapter plate which was 1/8 inch thick with a protruding nut like yours, or a $100. 5/16 inch thick adapter with the hole treaded, eliminating the nut. I chose the more expensive plate and have no problems. My instructions said to use supplied washers to take up the gap between the flex plate and the converter allowing for 1/6 inch clearance gap before bolting the converter to the flex plate. Hope this helps.
That was correct with the spacer on it..3/16 in between is correct!And shim it with a 2 washers in between the torque converter and flywheel!!
Im gonna take your word for it bro
Yes I did it the same way no problem.
Yep! I heard most people using two washers to fill in 3/16 gap also.
I think you should mount the trans to the block and measure how far the converter pulls out of the trans to mate up first. That’s the spec that matters, your converter should have directions saying that it can very by a certain amount and using a washer to shim between the converter and flexplate is normal and expected.
Yep youre right and thats what im gonna do
Everything looks good I didn’t use any adapter plate your going to miss out on a bolt but it’s not a problem people use them just like that on the track it will handle a ton of Hp and about the space on the torque converter bolt up the transmission and put washers in between for spacers and send it
hi there new here thanks for the videos on the ls
Thanks you helped alot bro
That bell housing bolt pattern looked like the same as the 1962 235 people should look into the inline six motors Bell housings
I got the same convertor , did that end up working with washers . its going on a 07 Lq9.
Thanks for sharing!
I have a 1968 hurst olds I plan on swapping do I need this adapter for 4speed muncie?? Or do I swap out the hosting all together to chevrolet??
Throw, your nice bushing, in the lathe and, turn it down, .125-.1875, or what you need. I'm surprised, it wasn't dead on though. Maybe for stock torque converter? Nice piece!
Exactly, I was gonna say the same thing but decided to see if someone had already suggested it. 👍
That manifold look extremely close 👀
Its a factory F body manifold
What year 4.8? Some of the early one's had a longer crank
The only 4.8s that had a long crank were engines found in 3/4 ton vans.. And those were freakishly rare. Ive had 2 long crank 6.0s on the other hand
Thank you sr 4 real no bullshit
What about the u on the bell housing
??? I gotta remove the flexplate to install the plate correctly
Sir, in the Stationwagon, how would you compare your gas mileage before and after the swap???
Compared to the 307. About the same. Much better than the 403
If you're going fuel injection. Why not used the transmission that came with 4.8
Because were using Microsquirt instead of the factory ecm
Can you trim down the cock ring so the so the torque converter sit flush with the flywheel.🤔
Im gonna have to do.something
*Simple fix machine down the difference on the bushing .150 thousand on a lathe.*
It bottoms out in the crank and the snout of the converter bottoms out as well. Not entirely easy. Might not be an issue at all
All you had to do was get aflex plate off of a 6.0 and you wouldn't need that spacer
Still need the spacer