hey gang, been away for a while and I didn't really know where I should post this question, but here goes. I have an '85 K30 crew dually with a 454 gasser, I'm not a fan of the big block gassers, I intend to put either a mechanically injected 6.5 TD or an 8.2 in its place. I've just come across a couple 8.2's for less than $200 each. Can anyone tell me what I'm gonna run into with mating the 465 tranny to an 8.2? I had the 6.5 conversion figured out, not that there was really much to it, but I've never messed with an 8.2, so I have concerns about mating one up to the 465 tranny. Thank you all for your wisdom and time.

How much does that sucker weigh? The other thing would be the size.

8.2's are junk. don't waste your time. If your gonna go that far use a Cummins.200$ is too much for one. What's scrap price...:D

why not a 12v cummins ?

I would stick with the BB gasser before I put an 8.2 Detroit in it. The gasser makes better power anyways.

find you a 6v92, ive been around 2 stroke all my life my ol man works for detroit but the 8.2 aint worth it

6v92 are BIG, very heavy.

6v92 are BIG, very heavy.


Not when compared to a 16V92. Now that is big and heavy. Maybe a 6-71 would fit, still probably too big and heavy. I think the 5.9 cummins is the most logical choice, other than just leaving the BB in it.

There is another member who was looking into the 8.2. The main problem was finding a strong overdrive transmission to hook to the SAE #2 bellhousing.

Not when compared to a 16V92. Now that is big and heavy. Maybe a 6-71 would fit, still probably too big and heavy. I think the 5.9 cummins is the most logical choice, other than just leaving the BB in it.

There is a guy over at pirate4x4 putting a 6V71 into a 2 ton Chevy. I think the threads called '2 tons of fun'

There is a guy over at pirate4x4 putting a 6V71 into a 2 ton Chevy. I think the threads called '2 tons of fun'


There are 2 6-71's. One is a V6 and the other is an I6. I still think they are both too big and underpowered.

6V71, V hence the V. They make good power in 6V71T form, just need enough gears.

6V71, V hence the V. They make good power in 6V71T form, just need enough gears.



Yes, I agree the "T" does help. Noy sure if the V is all that much better than an I. They share quite a bit of parts. The biggest reason that I can see would just be for application packaging. And not to mention that the 6V71 is half of a 12V71. Now that is a sweet sounding 2 stroke with 12 cylinders bangin' away.

noisy gutless oil sucking slobs. Why bother. Be better off using a 3208T. Cheap, eay to work on and can produce decent power.

biggest problem with that one is its a CAT lol. the 8.2 needs its deck to be strengthened. if you want to keep headgaskets in it with a turbo on it that is. they make insane toruqe numbers though. somewheres around 500Flb for the N/A engine.

noisy gutless oil sucking slobs. Why bother. Be better off using a 3208T. Cheap, eay to work on and can produce decent power.

Noisy - HELL YES, best sounding engine ever built. Oil sucking - Yes, Detroits tend to leak, especially older ones. Gutless - NO WAY! The CAT 3208T makes 200 - 250 HP and 600 - 640 ft lbs in stock form. The 3208TA makes 300 - 425 HP and up to 843 ft lbs. The 6V-53T makes 250 - 400 HP and 627 - 903 ft lbs in stock form. The long block of the 6V-53T is capable of well over 1200 in stock form. The 3208T is a 636 cu in engine vs 318 cu in for V6-53T. Its ironic that 6V-53 is exactly half the cu in of the 3208, and without an aftercooler, the CAT can't touch. The Detroit, unlike the CAT, also has replaceable cylinder liners. Unless you crack the block, you'll never need another one, ever. A bottom end rebuild kit for a 6V53 consisting of pistons, liners, rings, main and rod bearings will run you around $1,000, and everything's new again.

Don't get me wrong. The 3208 CAT is a fine engine, probably their best, but to call the Detroits gutless is just plain wrong.

I have never seen a 6v53T. Had a couple 6v92T that ran real good but I was reffering to the 6v53 NA. Had a few of those and they were gutless to comparable Cat. Yes they are cheap and easy to inframe. Cat is a throw away. Could hear that 6v53 3 blocks away. Had to wear ear protection driving it. The 2 stroke Detriots are not acceptable in todays Heavy truck indsurty because they can't pass emissions not to mention would get the truck put out of service in a heartbeat with oil leaks.

I have never seen a 6v53T. Had a couple 6v92T that ran real good but I was reffering to the 6v53 NA. Had a few of those and they were gutless to comparable Cat. Yes they are cheap and easy to inframe. Cat is a throw away. Could hear that 6v53 3 blocks away. Had to wear ear protection driving it. The 2 stroke Detriots are not acceptable in todays Heavy truck indsurty because they can't pass emissions not to mention would get the truck put out of service in a heartbeat with oil leaks.

Well, that would probably be true, but its not really a fair comparison to compare a turbocharged CAT to a NA Detroit. I used to drive a 60's GMC with big knuckle boom and it had a 6V-53T, and was a beast. The only truck I've ever with a with 275HP 3208T was a 90's Topkick Chevy for the machine shop I used to work. We delivered train couplers on it that we machined and we would regularly have 16,000 on that truck. It did a good good, but it wasn't particularly impressive. My boss replaced it with a new GMC 6500 2 years ago with a Duramax (6.6, not 7.8) and it runs better that the CAT powered truck did.

Both the 6V-53T and 3208T would be great engine for re-powering, especially something was just for personal/novelty use. You're right though, if you hate sound of the Detroit, you'd be better off going with the Cat or something else. I do know that 6V-53T is actually a lot quieter that the 6V-53NA is though.

Oh yeah. Turbo makes a huge difference.

6-71 is long but a 4-53 would prob work with an allison behind it, we do maint on tugs that have 2 12v92 and the other has 16v149 2 blowers 4 turbos high HP engine there

8.2 detroits are a first effort in a medium duty 4 stroke engine from detroit. Just like any first effort, there are bound to be some flaws. To make one worth your while, you will probably have to find a good mechanic that is familiar with them. The main reason they have a bad rap is that the head bolt bosses deform when you torque the heads down(the deck humps up when the bolts pull against the threads). Once you go to replace the top end or do a head gasket job, you cant get a proper seal. The block must be decked for it to seal properly (the only material that would be cut away is around the thread bosses). IIRC, the valve lash and unit injectors are finickie to setup and may require a special tool, but I'm not sure. It would be an original swap, but a 12v 5.9 cummins would be more reliable and easier. Another down side to the detroits are the lack of parts availability.

I could swear this is the same motor my uncle had in his 80's model Freightliner.......damn motor sounds good turning R's:D

http://tcimages.net/DisplayImage.aspx?PD=20764754&S=IS&wmin=truckhub (http://javascript<b></b>:eval('ctl06_d_d_ctl01_itd_ss_ssObj.hotlink()'))

http://tcimages.net/DisplayImage.aspx?PD=20764755&S=IS&wmin=truckhub (http://javascript<b></b>:eval('ctl06_d_d_ctl01_itd_ss_ssObj.hotlink()'))

no thats a 2 stroke detroit that your showing lethal. a 8.2 has the turbo mounted on the back of the intake manifold out of the way. thats a screamin detroit there not a quieter 4 stroke.

no thats a 2 stroke detroit that your showing lethal. a 8.2 has the turbo mounted on the back of the intake manifold out of the way. thats a screamin detroit there not a quieter 4 stroke.

try this pic

http://tcimages.net/DisplayImage.aspx?PD=20764759&S=IS&wmin=truckhub (javascript:eval('ctl06_d_d_ctl01_itd_ss_ssObj.hot link()'))

http://tcimages.net/DisplayImage.aspx?PD=20764760&S=IS&wmin=truckhub (javascript:eval('ctl06_d_d_ctl01_itd_ss_ssObj.hot link()'))

definetly not an 8.2. 8.2's didnt have the supercharger and that one clearly does.

definetly not an 8.2. 8.2's didnt have the supercharger and that one clearly does.

ok let me do some more digging

This is what an 8.2 looks like.

http://www.romanequipment.com/8_2_engine.jpg

http://www.motiveengines.com/images/MyImages/Diesel/DetroitGM8-2N.jpg


They actually sound pretty much just like a 6.2/6.5 too!

http://www.youtube.com/watch?v=MFxAIDt-o0E

try this pic

http://tcimages.net/DisplayImage.aspx?PD=20764759&S=IS&wmin=truckhub (http://javascript<b></b>:eval('ctl06_d_d_ctl01_itd_ss_ssObj.hotlink()'))

http://tcimages.net/DisplayImage.aspx?PD=20764760&S=IS&wmin=truckhub (http://javascript<b></b>:eval('ctl06_d_d_ctl01_itd_ss_ssObj.hotlink()'))
Looks like a 6v92T silver series. Not a bad engine. I had one.By todays standard though it the oil leaks would get you OOS in a heartbeat.

no thats a 2 stroke detroit that your showing lethal. a 8.2 has the turbo mounted on the back of the intake manifold out of the way. thats a screamin detroit there not a quieter 4 stroke.
I have never seen a 8.2 fuel pincher with a Turbo. I was under the impression they were NA. The one we had was. it was a dog. It howled at night. Only thing good about them was they were decent on fuel but gutless.

yea they had a cool turbo. the turbine side had 2 inlets since it was a V8. one inlet for each bank.

Never seen one.

Never seen one.


See video in post#27 ^^^^^

I have an outdated browser. Can't see it.

I have an outdated browser. Can't see it.

Here's the link to it..... Just take the space out.....

http://www.you tube.com/watch?v=MFxAIDt-o0E

eh, as much as the thought sickens me to put so much as a nickel into a BB gasser, I've pretty well decided that I'm gonna go thru the 454 and put it back in the truck til my project 6.2 turbo is finished (was originally intended to go in the red k20). I still have a long way to go with it, as I'm still working on the bedplate, so I suppose I'll just live with the gasser for a while. Oh well, maybe the thought will help motivate progress on the 6.2. Thank you all for your wizdom and input. I have to say, I feel some shame in having a gasser in one of my trucks. Its kinda ironic really, I used to be the gasser motorhead building nasty small blocks for all my vehicles,...now, with 10+ years of pure content with my red 6.2 k20, I have a very hard time conceiving of a truck with anything other than a diesel. Thanks again guys

How bout a 2900 series Allis. 301ci inline 6 turbo motor. Stock they were turned down to 93hp. But with larger injectors, turbo and injecton pump they will get up to 250hp easy. They are a lined block.

what would be cool, is the military 6 or 8v-53 with aluminum block.

http://www.youtube.com/watch?v=DSXKCG53zaA

Screamin' Detroit > any modern 4-stroke diesel for sound:

http://www.youtube.com/watch?v=EnN1i9LjAw0

6V53T in a C70. it moves out quite well, and sounds absolutely SICK :D

Screamin' Detroit > any modern 4-stroke diesel for sound:

http://www.youtube.com/watch?v=EnN1i9LjAw0

6V53T in a C70. it moves out quite well, and sounds absolutely SICK :D

IMO.....there is no engine today that sounds better than that one.....like you said sounds absolutely sick:D

If i had the cion that motor and tranny would find its way in my truck;)

had a screamer in the shop here today, sounded absolutly beautiful and that was idling, when the owner took it down the street he let them ponies sing and she sure was a sweet sound echoing off of all the buildings in town.

How about this swap. Including the married trans

http://www.youtube.com/watch?feature=youtube_gdata_player&v=E0o1o5W_f6o

i would like to see that happen

i would like to see that happen

I have a buddy selling the same engine (4l-53t) mated to a five speed and has a 2 speed auxillary for $1800 whole package. I just don't have the money or facility to do it lol.

I have a GMC dump truck with an 8.2 it isn't a bad engine