LS3 Rocker Install Easiest Way DIY
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- čas přidán 27. 08. 2024
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Watch this video for the easiest way to set up the Ls Rocker arms in your Ls Motor. there is many ways to set up the rocker arms however I found that setting my motor to TDC compression stroke on cyl 1 before I removed the heads set everything up. By doing this the rocker arms are set by following the firing order of the engine and then torqued down to 22 foot pounds.
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I don’t recall the rocker arm torque spec being shown on screen or talked about. My 5.3L truck engine came to me with no repairs. As a retired ASE Master with 40+ years found an interesting issue. Every single bolt on the timing chain cover was loose. Just a word if doing a drop in job. I used green Loctite on clean bolts. Anyone who builds race engines add a thread locker on almost everything. Vibration and expansion during heat cycles know these bolts can work loose. Just a kind word about what I found. Yours may vary! I wanted to inspect the cam, cam bearings and modify the oil pump. I can’t do a used engine without doing certain things. Comp check, injector cleaning with my factory tools and chemicals on a home stand. With a factory OEM schematic, I used an 8K resistor for VATS for repeat prior to PCM updates. I learned much after a dealer tech, working on EFI vehicles in 78. Yes, two vehicle made for 76 model year had electrical fuel injection with one for each cylinder produced in very large numbers.
Thread locking chemicals can add the the build, I have large bottles for threads, sealant and two different anti-seize. Best to everyone!
Yes, at 2:39 time in the video, he says 22 lbs ft.
I am correcting my own comment, distracted or my $3 dollars ears to blame. Nice!
My 05 5.3 will low idle and the oil pressure drops and need to us some throttle until it quietens down, is the oil pump change a big job?
@@petermeinert720 First is the oil pickup to seal. I purchase a muscle car type oil pan and came with 2 bolts on flange. Use feeler gauges on oil pump for wear, minor inlet and outlet oil pump housing edge smoothing so no sharpe edges to turn. Pan had no internal dump if filter plugs, great. Otherwise stake it in place so it can can't open. Use a "Sac City Corvette Bar-Bell". I alway use 518 red jelly at front and rear oil passage covers just a thin film. Inspect cam bearings as too much leakage happens as copper shows, inspect all push-rods ball for wear, install captured needle bearing on rocker arms and replace oil pressure switch, as most do for aftermarket gages, use Permatex pipe sealant and prepare for 30 degree 1/8" NPT adaptor at oil pressure sender for clearance. Please note drivers valve tips!! Mine had wear but not passenger's side. My only conclusion was to buy a second drivers side rocker are cover, put 16mm box end of wrench on metal air tube and rotate backwards then "TEE" both together for fresh clean air in. Run a stupid catch can, add SS wool from Dollar Store in cans inlet and place where cold. Route dirty air from valley pan. Use intake vacuum for return PVC. I used NPT, 90 degrees fittings and 2 feet of pipe on bottom, stuffed with SS wool, and cotter pins to hold SS Wool in place. I used soldered 3/4" copper pipe and clamps. Clamps held with aluminum rivets heads only into holes I drilled and support and hammer tap in place. I drilled holes in bottom from 3/16" to 1/8" inch from rear to front for oil drain back.
Dielectric grease new knock sensors at block, seal top and bottom seals with high temp red completely. DK. Good 2023!
22 ft lbs. 1965 Rochester Ramjet was FI
This is either an LS1 or LS2.. Definitely not an LS3.. These are cathedral heads. Could be an LS6, but it looks like an LS2 to be honest. You also can pre-install ALL the rockers/ rods/ lifters at the same time as long as you have done TOP DEAD CENTER first-- however you do not FULLY torque/ tighten them down-- you PRELOAD them first! AFTER PRELOADING ONCE TOP DEAD CENTER IS MET:
1st Step: Tighten the exhaust valve rocker arm bolts 1,2,7, and 8 to 30 N·m (22 lb ft).
2nd Step: Tighten the intake valve rocker arm bolts 1,3,4, and 5 to 30 N·m (22 lb ft).
3rd Step: Spin the Crankshaft 360 degrees clockwise.
4th Step: Tighten the exhaust valve rocker arm bolts 3,4,5, and 6 to 30 N·m (22 lb ft).
5th Step: Tighten the intake valve rocker arm bolts 2,6,7, and 8 to 30 N·m (22 lb ft).
You have now properly got your rockers installed buddy! But the method this man did in the video works as well!! The way he did it assures that you AREN'T doing it out of order! Good video!
Thanks for sharing. I did my rockers today and I used a bore scope to get the number 1 piston to top dead center because I forgot to make sure I did that before I put my heads on but luckily I had that bore scope. Now the only concern is that mine had a teensy weeny bit of play and I think yours did too but correct me if I'm wrong.
Again thanks for sharing.
ZAZA, ZS WEA ES EA2WW WAA 32¹QA ACA ZT
Should your rocker arms be that moveable after torquing down? If mine are not do I have to long of a pushrod?
Pretty sure that's a ls1 not a ls3. You can tell by the steam vents, rockers arms and cathedral ports. Ls3 have the back 2 steam ports blocked off, rockers are offset, and the intake runners have square ports not cathedral.
I heard the 5.3 was not an LS , but I haven't done much research on it,
@@petermeinert720 it's the most popular ls engine made
You are incorrect, the rear steamports are blocked off in trucks due to the engine being tilted, look up definitive ls guide on the web.
@@shadowopsairman1583 lmfao this is not a ls3 period.
And technically the 5.3 6.0 are not ls the aluminum block engines that’s are designated ls1,2,3,4,6,7 are the only “ls” engine but they all share same architecture
I am confused, the title is ls3 rocker arm install but those are cathedral heads?
Thanks for the video man! The music made me a little nervous though!
I have a 2012 silverado with 5.3. i have a miss fire on cylinder 5. i have changed the spark plugs, coil, and coil wire to spark plug, and injector, and nothing helps still a misfire on 5. There is no noise coming from the engine that makes me think it has a loose rocker arm nut. Could it be that the number 5 needs a slight adjustment? It fires when you get above idle but misses at idle. what could be the problem?
Why are you using cathedral port heads on an LS3?
That's what i'd like to know.
I was thinking the same. Looks like no response yet, eh?
@@ThePhotoForce probably more airflow, I think the factory square head port heads can only only go up to 600hp
@@alexeyscedillo8113 that's the odd part, the rectangular port stock ls3 heads flow much better than cathedral port so it seems that they did a downgrade unless they did some pretty serious porting and polishing on those. oh well, who knows. Great video none the less.
@@alexeyscedillo8113 maybes the ls3 is on a truck, hence why they used cathedral heads cause that what they had to work with. Paired up with a tbss manifold should hold up great and make similar power as the ls3 manifold even Richard Holdener tested it
Great video 👍
why need to rotate the crank to top dead center it not over heads cam
So first tight slightly tight them in the firing order then at the last u do the samething but toqure them to 22 foot pounds in the firing order
Should all the rocker arms be even once done?
How come my valves are being pushed down all the time when they should be closed at certain positions
Check your lifters and pushrods again, also your lifter trays
Do you have a video for cam R&R
Great video! Does the rocker pedestal on these engines have specific orientation? Words up or down?
no
I was putting mine and noticed motor is locked up what in world just new rebuild just putting it together for first timer
do you have the spark plugs out
Yes, he is putting the “rod” into the spark plug hole to see whether the piston is top dead center or not.
Those powder coated rocker covers look good Jerry.....
I hope no more major problems.
What’s the procedure to prime new lifters if they’re being replaced only?
So basically when the valve springs are full extended and the pushrods are down you can torque the bolt?
Ok top dead center means you are on the compression-fire stroke, so that means both valves are closed and your lifters are on the base circle, not the lobe of the cam.
Look up 4 strokes "5 events" of an internal combustion engine, 720° it occurs in. Suck, squeeze, bang, blow.
Thanks for the tip
What torque ft lbs did you leave them at ?
22ft lbs
Ummm everything is on my car and idk how to test if it's dead center ...
Top dead center the pushrods are a bit higher than the rest. Even if everything is on your car, you should still be in dead center if you took it apart.
MUSIC MAN
no need for that
Just so you know for the next video
We r not here for music
We are here for knowledge
If you teach us what u know
We will support you
If you don’t like don’t watch
I like the background music
This too complicated not the easier way either
Doing em one at time is the easiest way and most for sure way
Ls3 has rectangle port heads. If you don't know the difference between a cathedral port and a rectangle port you have no business touching anything mechanical.
If you can’t understand that the procedure is the same and port means nothing than you need to get off mommies computer
@@TestDontguess mommies computer? What the fk are you 12 years old ?
@@TestDontguess you are the one who said ls3. Just say ls.
@@TestDontguess didn't you learn shapes last week in kindergarten?
I see the problem.....YOU'RE CANADIAN !
You can use whatever heads you wish on your build 🤦♂️🤦♂️🤦♂️🤦♂️ can you even change a spark plug