The Northstar 4.6L Engine Problems

[@BNSFREVIVAL1]

I’d say I got lucky. 2005 Northstar 4.6 VVT. Whilst the head gaskets were fine, I bulletproofed with Northstar Performance studs anyway. I haven’t had any issues at all. All 320hp at full tilt.

[@JuanBriones-g8k]

Yes the 2005 is the one to get

[@blazedank100]

Fire as f!!! I love it !!

[@blazedank100]

@@JuanBriones-g8kand it is the one I have as well!

[@TheAlphacad]

The Northstar isn't as bad as all this. I used Norm Huhn products stud kit on mine 9 years ago. 100 k since and no probs or oil leaks or consumption issues. I'd say properly warming this engine and regular use and good maintenance is what has mine doing just fine.

[@reddrw1]

My 4.6Northstar is a hard rumning engine I removed the heads and drilled the block and made my own head bolt inserts . Way better than the gm kit. Never had any more problems with the heads. As far as oil leaks ,i have not one oil leak in this engine, or any problems with the piston rings . It does not use any oil at all. These engines are sought after for racing engines , or pull engines in some tractors. I have the early model 4.6Northstar. Thanks for all your information....

[@tigerghost82]

How did you make them?

[@wackadoodle8951]

​@@tigerghost82 look up "timesert kits" for it, it's a little expensive but worth it

[@jjshebanow]

The early Northstars were nightmares, but the TTY nature of the head bolts are not the reason. The fine thread on them, in soft aluminum was. Soft alloys need coarse threaded bolts. This was solved in later engines. If you replace the bolts with coarse threaded studs, it's a heck of a fine motor.

[@Calijay707]

What year did they fix this

[@rm25088]

@@Calijay707 2004 I beiieve.

[@Calijay707]

@@rm25088 okay thank you, i have a 2009 so i was paranoid for a second there lol thank you sir

[@rm25088]

@@Calijay707 Yeah you are fine. I have a 2008. Runs real good. 96k miles.

[@Calijay707]

@@rm25088 ahhhh god i miss when mine had 94k miles...those were golden times. Its an amazing car and its reliable af, just dont let it sit for 8 months after getting a new engine cuz i feel like she fell apart on me when i did that. But hey, any other car would probably have a LOT more problems after sitting for almost a year without being driven so much as once. Fuel lines, pump, filter were all fine. But anything rubber or plastic deteriorated significantly... battery went bad, bushings in suspension went bad, sunroof rail clunks when opening now, window switches broke and fell through the driver door handle, driveshaft-transmission rubber coupler went bad, ebcm went bad, dash vinyl is significantly less shiny...thats just what i could think of. Definitely a "take care of it and it will take care of you" kinda car. Just sucks that everythings so hard and tight to work on in the car and any part that isnt hard to replace is expensive asf 🤦‍♂️ gotta love it.

[@Dankazn]

Mines going strong just have to change a lot of things most people never think about. A lot of folks don’t even change their own oil anymore let alone know what a pcv valve does 😅

[@TeeroyHammermill]

They'll leak oil but the rest of the problems were normal wear and tear. The headbolt problem was 97-99 and could be mitigated with regular coolant flushes. The waterpump problem was caused by the tensioner wearing out usually by 80,000-90,000mi.The oil burning was cured in the 2000s when they mandated synthetic oil. Not a bad engine at all with regular maintenance. Them Northstars don't tolerate neglect so they're not good beater cars for college kids or anyone on a tight budget.

[@vvti6366]

I've had a Northstar in my Oldsmobile Aurora and my Cadillac Seville STS am I Pontiac Bonneville GXP and in my Cadillac SRX. All of these North Stars performed phenomenally. This woman ought to get her story straight I have heard the early ones were problematic but not after about 2000.

[@teetaylor2860]

All northstars are not bad. She speaking on the early ones. There's plenty on the road still running great with nun of the issues she mentioned. Stop it

[@IvyMike551]

ACKshauLLY…. The greatest area of oil leaks on these motors are the mid block aluminum gasket.

[@Swankyestbrute]

Im researching these rn almost think itd be cool to bulletproof one to swap into my e36 320hp out the box is pretty damn good for a 4.6

[@breaknbad]

500 hp out of a 5.0 is lots better

[@4thCorner]

The only leaks on my northstar is when I took it jiffy noobs and the certified mechanic of Yale’s industries spilled a lil bit during my $120 oil change then proceeded to tell me how my transmission was leaking fluid took it to another mechanic and they said all my fluids were fine 😅😅maybe the only people that experience issues are the ones who take the cheaper route and go to these bs shops 😂😂

[@JuanBriones-g8k]

I have a 2005 northstar most reliable car I’ve ever had alternator needs to be replaced about 80,000 miles

[@ccvair1967]

Funny i have a 2010 DTS with 160k on it and its been troouble free...

[@ericwilson2585]

Update; I finally bought an LH2 version Northstar out of a Cadillac XLR, off eBay for $480. dollars total. Complete with everything, exhaust manifolds, motor mounts, all accessories, flexplate, underhood wire harness, ECM, ALL of it... They claimed it had 157k miles on it, but when I got done tearing it down, it was in practically perfect condition. Clean and well taken care of also. The only thing that happened was a main bearing bolt snapped off. So just as an experiment, I took the broken bolt, clamped it in a vice, and hit it with a 7/64 drill bit, and the drill bit cut it just like it was nothing, probably because it's only a grade 9.8. So I'll be able to drill it out no problem. And just as a note, all the head bolt threads were perfectly fine also.

[@ImperatorCaesar22]

The Northstars were not actually GM's first DOHC design. The first one was the LT5 used in the early 90s Corvette ZR1, but it was designed by Lotus and built by Mercury marine. Literally a boat engine. Cadillac tried to make their own version and ruined it

[@ltdowner67]

Absolutely correct. GM owned lotus at the time. 😊

[@michaelmortag3536]

I had a 1995 caprice pursuit vehicle. It had the LT5. Fastest top end car I've ever had. 178 mph on gater alley and was still pulling,then I got scared😊

[@arturozarate1752]

@@michaelmortag3536 I wasn't aware the 32v LT5 made it to service vehicles. I say that as a certified LT5 GM Master engine technician. From 2000 to 2005 there were only 4 of us in the state of Texas. I was bombarded with information about that engine every work day till I left GM.

[@arturozarate1752]

@@ImperatorCaesar22 as a GM LT5 certified Master Technician I miss that engine and the Callaway Supernatural I bought off a customer in 2001. Ugh.....I regret selling that beautiful car!

[@caddothegreat]

I bought my 2007 DTS new. About 7 years in. The power steering pump locked up with no warnings. 2 1/2 years ago the transmission fluid line came loose at radiator. The lower one. GM's brilliant connector clip rusted out. Fluid went everywhere. 2-3 weeks later the alternator went out. Of course the tranny fluid flush haha caused that. Yes it leaks oil. I was doing 800 miles per quart. The miles are less after I did an oil change. Yet it still starts and goes with 280,000 miles. Just last week an ignition coil went bad. Of course it was on the rear bank by the firewall. YUK. Found another for $10. It was hard to find in my area.

[@TalkyoshetTv]

I have an 07 DTS as well. currently 220, 000 plus miles. Its in the shop right now for a rear main seal. Although there's issues here and there, these engines seem to run as long as you can afford to fix when something fails. I constantly see a lot of high mileage DTS and it makes me wonder are they really that bad lol. I mean I knowthey all leak oil but still lol

[@gabevee3]

Wow. I only had two Caddys with the N*. The first was a 1996. Its gasket blew. Before that I had to change the pump once, and the radiator. I suspect that because of those two things where I had the temp go up it exacerbated the issue, plus I used the green stuff, and since a couple of the head bolts were exposed to the coolant, the chemical reaction caused rust and bolts loosened. The second, a 2004. It's been ruining beautifully, and I have never had any of the other issues mentioned. It does consume oil about a quart every 3-4 weeks if I drive a lot (though of late only drive once a month or so I go 700-800 miles highway to visit my mom) , but it is a hi-output, high cylinder compression engine. It happens. I do have a tiny coolant leak somewhere but it's negligible and I make sure to keep the overflow tank topped off with only ever Dexcool. But no other leaks to speak of. And I don't floor it or drive much over 60 MPH like many do. It's too bad they didn't address those issues until after 2000 because tin spite of the advertised specs, I get better than 25 MPG on the highway.

[@CMAG33]

This was by far not gms first Dual overhead cam engine. Chevy had the LT5 v8 in the c4 vette long before the Northstar. A lot of people don't realize it but overhead cam is nothing new. Overhead cam engines came before pushrod car engines in most manufacturers. Chevys had overhead cams in the 1920's. That's also not how the torque to yield bolts fail. The bolts are fine if you want to check the stretch on the used ones they will still be in spec. The head bolts on the Northstar fail because the aluminum used was too soft and the expansion of the block and heads pull on the bolts and then contraction they push on the bolt threads until they start stripping threads. That's the reason you'll find helicoils in a lot of the head bolt holes. It's not the bolts it's the threads. Check the threads on the bolts when you pull them and you'll see the aluminum that's been pulled from the threads in the block all over the bolt. It literally pulls the threads right out of the block until it can't keep enough pressure on the head gasket.

[@jjshebanow]

The LT5 was designed by Lotus, and built by Mercury Marine. The Northstar was the first all-aluminum, 4-valve per cylinder V8 designed and built by GM in-house. Rest of Your comment was spot on.

[@CMAG33]

@@jjshebanow the Lt5 was designed with lotus not only by lotus. It was a joint design so still chevrolet like I said. Your right about mercury marine and from what I understand chevrolet used them because mercury was more conistant with producing aluminum blocks, heads, ect with less core shift as chevy didn't have much experience with in house aluminum blocks and heads at the time and instead chose to have them done by mercury because it was cheaper. A very cool engine no matter who made it or why and it's a shame more people don't know about them.

[@gerr1986]

I was unfortunate to own a 1999 Cadillac Seville and ultimately ended up selling it because of the issues with the Northstar engine. That car sure ran smooth and was a beast, but it finally began to give way when it reached 80K miles. Was nice enjoying it while I could though.

[@Knights2theEnd]

04 Deville, has 200k miles, original engine. It's damp underneath but doesn't drip oil. Doesn't consume oil. Have to top off of the coolant every 10k miles. Daily driver. Either I am very lucky or I just take care of my northstar. Never left me stranded. I've taken it cross country.

[@maxomalo]

Yeah that engine has a few design flaws but since a lot of people are not looking at them, first, we can say that GM made the coyote before the coyote was a thing.... And you can now buy yourself a 32 valve Northstar for way cheaper than a coyote and the design will take 1,000 horsepower. Not a problem. It's literally if a LS engine and a k20 engine made a baby And maybe they were cousins lolll like the full crank galley is just amazing. You can push so much boost on that crank, to 52 teeth reluctor you can tune it with any GM ECU. Yes they do have a head bolt design issue. There's some really good kits out there. Just do that and you got yourself an amazing engine for way cheaper than a coyote able of just as much and it'll fit straight on a 6l80e or a standard 6-speed. In my opinion, if you have to build an engine to put into something and you wonder what I think that's a great contender to a lot of supercar engines, if there's someone that can manage to slap a flat plane crank and that thing it would sound amazing!

[@timothydobrynski9028]

Dude, Northstar engines aren’t that bad if you buy one, pull it out change the head studs change the oil pan baffle in the bottom clean it up re-ring it. It’ll be good for another 150 thousand miles I’ve rebuilt plenty of these. I picked them up for pennies on the dollar in DTS refurbished everything that was wrong on them and I sell my five cars years and I make a mint

[@jaxcell]

My 4.6 XLR is doing just fine, 150K and still runs perfect.

[@ericwilson2585]

I really don't care what anybody says, I like the 2004 and later LH2 versions. So much so that Im going to be buying an LH2 version, head stud and main stud it, forged connecting rod it, custom forged piston it, performance valve spring it, twin turbo it, and put it in my next hot rod build. It seems like to me the 04 & up LH2's are a very under rated engine, just becouse the earlier versions "did" have a head bolt and over heating problem. I have not heard anyone mentoin the LC3 version, I don't really understand why? Maybe i just didn't look at all the comments. Well don't look up all the R&D that went into the LC3 version, or the prices for ALL used Northstar engines will go threw the roof, lol. P.S. If you're going to be using a Northstar engine in a RWD car, you pretty much have to use either the LH2 or LC3 version.

[@MCWR32]

Had an 04 cts 3.2v6 was the best car i should've never sold. Now i need something with awd/4wd and was looking into the cadillac srx 4.6 northstar. So i guess i need to look further..

[@loutruckmd]

I have one in my 2007 DTS. I have had no problem with it. I don't know.

[@PowertrainProducts]

Hey there’s nothing wrong with that! Keep taking care of her

[@undertakerfire7810]

That’s because they fixed them after 06 from what I know, I don’t understand why the hell people crap on them so badly, from what I see a lot of 06-11 DTS make it to pretty high mileages and NOBODY seems to talk about the “facelift” engines EVER!!??..... They leak oil, yeah so what, many many engine designs leak oil and especially once they age, my rule is if I only got to check it every time I put gas no problem... LOL

[@squirlnutsbigsack4864]

@@undertakerfire7810 halfway through 04 they actually fixed the issue by finally using headbolts that Cadillac engineers told them to use. 06 to 11 are redesigned, utterly reliable, and use ls headbolts. This woman has no idea what she's talkn about. Heads, and oil leaks related to repeated overheating. I haven't heard of any other consistent problems with any of em. 👍

[@somersetlax]

@@undertakerfire7810fixed after 2000* updated throughout the years but 2000 is when they updated hg

[@tobiasblech1929]

My 93 year old neighbor doesn't drive anymore and because I am retired and avalible and don't mind, I drive her to her appointments. Her late husband and her purchased a 2003 DHS, new, and it currently has 136K. I had her car out this morning and after dropping her off she suggested I use her car to go over and pick up my 97 year old grandmother for one of her appointments. Sorry, I get long winded, anyway when I got out to help my grandmother I noticed a ticking sound and given the issues this engine is notorious for I am concerned that it needs to be looked at. It is not raspy like an exhaust leak. it isn't anything like what I have heard out of lifters, but is very steady with the engine RPM. Some seem to think it could be the oil pump starting to go bad, or the timing gear. My thought went to timing as it sounds a lot like the issues the Pontiac 2.5L vtech engine had with the plastic timing gear. Since beginning to drive for her I have been keeping an eye on it like I would my own personal vehicle. I noticed and fixed a few very minor things, probably the one that was most egregious was the cabin air filter was put in folded in half, so it wasn't really doing anything. lol Oh well, on to reading more about the issues...

[@Dirtypretzleman]

I feel fortunate to have 130k on my bonneville gxp and no leaks period. Head gasket began to fail and I used a product called THERMALWELD which believe it or not fixed the coolant consumption in “5” minutes. No more issues! Did that @ 123k and it runs just fine! I paid $500 for it and it’s a dependable daily driver/ backup when one of our other cars are on the shop.

[@masjuggalo]

The intake doesn't leak? I've done a lot of intake gaskets on GM stuff with dexcool

[@Dirtypretzleman]

@@masjuggalo I’m not an auto mechanic but I haven’t added any coolant to it since putting the Thermal Weld in the cooling system. The oil isn’t contaminated with coolant either.

[@JonClark-mj2es]

Also the earlier North Stars had longer head bolts. And after 2007 they went back to longer head bolts.

[@toddprater14]

93,94 95 have the longer bolts but with thin tread..96 gm came out with dexcool and the stuff would turn acidic..and most people ignore the cooling system…after the quad 4 engine was discontinued, gm had crates of headbolts…so, in 97,98,99 they shortened them to use these batches of bolts (not good ).in 2000 the went back to the longer bolt , but didn’t change the thread pitch… 2001 ,02, 03 are gambles and first builds in 04’ (aug to Feb2003) are all same …finally in 2nd half of 2004 builds March -aug they went to ls bolts with coarser threads… so… if you like these cars with this engine ..you want a 2nd half of 04’ build car (2005’s)…. So…. You want a last year 2005 deville or the new Dts for 2006-11’ …

[@bobwoodward9550]

@@toddprater14 I have a 2005 build in a GXP....engine compartment and underneath of the car is dry as a bone at 134K miles. But like so many others I can't stress enough to keep to a regular maintenance schedule.

[@dj_davis05]

A2006 the northstar v8 fixed the problems actually the northstar v8 is a well built with tons of reliability you just gotta know how to take care of the engine

[@KejuanCooper]

I have a 1999 Cadillac Seville with a north star v8 engine it only has 77k miles. What should I do to prevent it from breaking?

[@chuckgladfelter]

My mother in law had a 1999 and it went well over 100K miles. She had the oil changed every 3,000 miles and the antifreeze changed at the recommended interval. She never had any issues with her DeVille.

[@wackadoodle8951]

Do what the other comment mentioned as well as look up "timesert kits". They reinforce the head bolts and easily make these engines last 300k if taken care of

[@TeeroyHammermill]

@KejuanCooper: Change the oil on schedule. Change the coolant on schedule at the GM dealer. Follow the maintenance schedule in the owners manual.

[@snowmanLawl]

The Northstar got a lot better with the updated version for the RWD models that came in 4.6L and 4.4L supercharged fixes many of the issue. Of the early engines, yet everyone acts like all Northstars motors are all built the same with no real refresh for the motor. Which is not true, I currently have an 06 STS with just shy of 300k km on the odo. With amny original parts left. Also 1 quart per 1000km is considered with in spec for all GM engines if the vehicle ks driven hard.

[@bennyconas6556]

I heard the bolts pull out from the block

[@RedRedDaDon]

Is that a crate Northstar, and what is the model, if so?

[@JonClark-mj2es]

97 98 99 2000 years avoid Use Lucas oil stabilizer What you cool level Change the water pump and water pump tensioner pulley and belt at same also run a high quality synthetic oil 10W30 Not 0w20 Bleeds the cooling system properly after doing so Ensure radiator fans are working properly. These are the easy solutions for the 4.6 North Star.

[@Hotrodranch]

I guess you never heard about the ZL1 motor that started in 1990.

[@fishside8693]

She doesn't know the engine was fixed in later years.

[@olgacoupal-bergeron7633]

Iam forever in love with deville deleguance 1997 . I do have a deep love and I will find her back .

[@TrollFalcon]

GM could have used an LS instead but chose not too 🙄

[@blazedank100]

She’s all cap! Not all northstars are built the same! Couple fixable issues that’s all. No doom n gloom.

[@franknewberry7250]

Wow. Impressive host-You go, Girl ! Let’s talk about a reman 6.0 Ford PowerStroke . . . Please?

[@PowertrainProducts]

I definitely will!

[@dollarstorememes]

imagine being called impressive for talking shop

[@Bimmer-Fonz]

Looool im so glad my caddy has the 4.5l upgraded ht1000 motor.

[@bennyconas6556]

I was like $600 short on a 5.7 32v 😪

[@bandrange3526]

*My Secret is change the Coolant Once a Year And don't Hop the motor meaning no fast take offs*

[@dtfreshh-]

o..mg... where have you been my whole life...

[@josephpacelli3691]

Just thrown a rod on my 03 Deville with the 4.6 Northstar

[@w41duvernay]

I think the Iron Duke is far worse. at least the N* makes some power.

[@caddydaddy____]

You are misinformed also there are two different versions fwd and rwd and its not the head bolt it was the thread pitch also the rwd Northstar does not have this issue ive had 9 of them and only one had the headgasket issue and it was a 99

[@MartialKahn]

I put 235558 km's on it in my 2003 seville STS. Never once had a problem thankfully

[@chrismart89inez]

I have driven a 96 for two years. All those things happen when you drive the sob on codes. Who are we kidding the 90’s industry was made on codes, limp modes that’s destroy your car and keeps the consumer at the brand of choice service center. It’s a 90’s v8 it’s gonna burn some oil no lies told there. Lol

[@randoawesomemix9501]

Wrong. The LT-5 from the 1991 Corvette ZR1 was GMs first quad cam, 32 valve V8 and they were brilliant. The Northstar was a Cadillac design and it is silly.

[@PowertrainProducts]

The LT 5 was actually designed by Lotus

[@elibenjamen8729]

But they sound so good lol i love the way the northstar sounds. Hate its unreliability

[@masterblackmon]

Just do simple maintenance❤

[@goodguygto]

I call bullshit on this channel!, about the Northstar, if you truly know the 4.6L (283 cubic inch) Northstar engine, you will know the correct procedure about tighten down the head bolts (there's a company in Canada that can help you with that), other than that, again if you truly know about the Northstar Engine, you can get 380 horse and 385 torque (advice timing) at the crank! That's not bad for an engine weighing 300 lb more or less. And if you twin turbo it, you can get probably 600 horse & 600 torque at the crank. People do it all the time in Southern California shops, to hit the dunes in Glamis, CA!!

[@PowertrainProducts]

All fine and dandy for people who are interested in learning those things, or cranking up HP nd torque for performance purposes. But for Dear old Granny who just wants her vehicle to run properly until she doesn't need it anymore and maintenance to be cheap, its a terrible option

[@salvadorlopez-beltran6734]

I don't think you ever really worked on one . I have an 05 and I don't see what the Wawa is all about. Most stuff on KZbin is regurgitated and just copy of a copy of a copy. Of course cars are expensive to fix when you go-to a shop so the public can thank videos like this for making that bill go up. So much crap about the starter it took me 39 min start to finish id say that it was fun.

[@bandrange3526]

2007 Dts: I had my Aluminum *Northstar from 2007 still riding good all I have to do now is oil pan gasket & valve cover gasket*

[@moetee8675]

As Tyrone Biggums would say…. GOD DAMM !! 😧🤣

[@Iamontothegameicasee]

When I was a mechanic, we made fun of these engines. Because they are horrible engines by design.

[@Yasin5791-d7u]

It's not the worst engine it just has a dumb design.

[@brucesheehe6305]

GM lost a whole generation of customers that bought vehicles with this engine.

[@markman7]

Couldn't have been very many left after the 5.7 diesel, V8-6-4, and HT4100 of the '80s.

[@toddprater14]

Gm was dumb to say this engine can go 100 miles without coolant and 10k mile oil changes that was fatal flaw #1&2… they also started putting first batch of dexcool in all gm cars in 1996 .,and people are lazy and don’t do coolant changes (especially when gm was saying ohh the coolant don’t need changed for 100k miles) fatal flaw #3 … shortening the headbolts to use old leftover quad 4 engine headbolts they had in droves starting for 97,98,99 was fatal flaw #4… this is a picky engine if your a slacker on oil changes and coolant changes and don’t keep up with maintenance , you shouldn’t buy a car with this engine….in 2000 they re-lengthened the bolts back to normal size (after massive failures in 97,98,99 and dexcool turning acidic and eating at head gaskets) but they didn’t change the thread pitch… so 2000, 01,02 & 03’s are still a gamble… late 04’ they finally used ls headbolts with a coarser thread for the 2005 model year on. And it pretty much solved the problem. You still wanna keep up on coolant changes… so u want to buy a last year 2005 Deville and the new DTS FOR 2006-11.

[@brucesheehe6305]

I have a 1995 Olds Aurora garage queen with 60,000 miles. I maintain it meticulously with no problems so far (other than oil leak). Last year, I had the green coolant replaced and I noticed they used Dexcool - pink antifreeze. I hope this is OK. You are obviously an expert and thanks for your knowledge.@@toddprater14

[@rjjames4501]

You got the story wrong with the head bolts but that’s okay I guess 😂

[@dollarstorememes]

yeesh maybe time to sell mine before it's too late

[@PierreKarlsson-qg5cn]

Dont agree

[@mr70camarors]

TTY bolts can be reused, but at a different torque.

[@stevenirwin473]

Is the 4.6 there for sale?

[@PowertrainProducts]

If you are really interested in it, send me an email [e-mail]

[@thomasclark4167]

That would be fireable!@@PowertrainProducts

[@arturozarate1752]

WOW......a whole lot of smoke you're blowing up you're viewers tailpipes. First: Torque To Yield cylinder head bolts have been INDUSTRY STANDARD since before I started turning wrenches proffesiinaly in 2001. Their metallurgy fatigue is not the cause of blown head gaskets. The bolts perform as designed. The root cause is lack of maintenance! The cooling system was overlooked. Ethylene glycol based coolant has a service life of 3yr/36k miles. The propylene glycol based Dex-cool has a longer life of 5yr/75k miles. When left to breakdown and deteriorate the coolant hoses from the inside out....a laundry list of components can and will fail. However the most dangerous is the electrolysis that occurs from the charged coolant in the system. Electrons are transfered back and forth from the aluminum to the coolant mixture(all the metal of the car maintains a negative charged as it is grounded). The fight for more negatively charged leaves voids in the aluminum in high stress areas surrounded by the coolant. Namely the head bolt threads near the bottom of the water jackets..... The weak aluminum looses its grip on the threads of the bolts and you have excessive lift of the cylinder head around that bolt hole at the deck surface. THE BOLT DOES NOT FAIL DUMMY! With the cam cover removed, a good known and calibrated torque wrench set to 50lb/ft, and a 10mm extended length 3/8 drive Snap-On socket.....attempt to tighten the head bolts in sequence of the suspected head. One or more will spin. If you had any experience, or sense to not speak in ignorance, you'd see the aluminum threads on the bolt when removed. TIK TOK....SMH SECOND: Oil leaks.....😂😂😂😂😂 clown! The valve cover gaskets don't leak! "Cracks" if any.....are inflicted. The rear main seal has a 5% chance of failure. The lower crankcase is where the oil leaks occur. Mainly the anaerobic sealant used to seal the main bearing cap bed plate dries and cracks, and THAT IS WHERE THE NORTHSTAR LEAKS OIL FROM! FINALLY(because I can't stand to listen to anymore wrong information) OIL Comsuption: The Northstar came in a "Y" and "9" version. Both over 10:1 compression, both high output, but one higher than the other. The engine design was ahead of its time alright. Premium fuel was required. Used....nah! The ECM detected knock and therefore retarded ignition timing to keep the engine safe. The target demographic was not ready for a high performance, high maintenance, performer like the NORTHSTAR. Cadillac over shot that by about 10 years too soon. 98% of the clientele at Ken Batchelor Cadillac in 2002 was over the age of 70, accumulated less than 7k miles per year on their luxury sedans, and very seldom got the engine to operating temperature in a single drive cycle. What that lead to was excessive carbon build-up on the 2nd and oil control rings. A service set of rings was experimental, and used a 2nd Napier oil scraper ring as the only difference in an attempt to decrease oil consumption. Passing along false information like your video is what's wrong with America. Shame. The NORTHSTAR is an amazing engine. Much more amazing than that 2 cent 🧠 of yours.

[@starxlr7863]

Exactly, very well stated!

[@arturozarate1752]

@starxlr7863 thank you sir!

[@rm25088]

mines fine. for now :)

[@nestorlugo.]

You got a cute 👃

[@bogdanshingyr9370]

Darling, will you marry me ?

[@alexcuevas5633]

She don't know you lil bro💀

[@nightcoregirlprinzeugen7234]

Marriage proposal comments are cheesy!

[@wackadoodle8951]

​@@alexcuevas5633bro is down badddd😂

[@christichamblee4133]

Worst engine ever!!!