BIG BLOCK Olds 455 Oiling Ed Smith with
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- Опубліковано 10 лют 2025
- Ed Smith ANSWERS a question on the channel about the OLDS 455 Engine Block Oiling
#smallblock #racing #edsmith
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Theres 3 different restrictor kits available for the big Olds....
One of them is a set that you hammer into the center holenin the main bearing upper saddles, BUT, all those do is restrict the oil going to the cam bearings. Those things are useless and belong in the garbage can.
The other restrictor kit contains 16 smaller threaded restrictors, and those go into each lifter oil feed hole after you drill and tap them to the proper size thread for them.
You should only use these though if you have a solid lifter cam. NOT for a hydraulic lifter.
The last type of restrictor is pushrods with much smaller oil holes in the ends. Those can be used with either a hydraulic OR solid lifter.
Other worthy oil system mods fornthe big Olds are, opening up and chamfering the oil drain back holes at the ends of each cylinder head. This helps to get the oil back into the pan faster.
The next mod is to take you oil filter housing off the block and gut the disc and spring out for the pressure relief valve, and then thread the hole and plug it with a solid screw-in allen plug. This will create more oil pressure in the system by forcing ALL of the pumped oil into the galleys. It also prevents unfiltered oil from entering the system, ALL of the oil is forced to go thru the filter. Just make sure that you change your oil filter often enough to prevent a drop in oil pressure/volume due to a partially plugged filter.
And finally, you can port and polish the oil feed port in the #5 main cap and underside of the oil pump that mates to the cap. This increases flow thru the system.
Doing all of this will definitely help the oil system. Installing a larger oil pan helps too, by preventing starvation from a low oil level, and the increased capacity helps to keep oil temps down a bit too.
For a big power street/strip engine, increase your bearing clearances. .0025 on the rods and .0030 on the mains is a good place to start. Run a high pressure/ high volume pump when you do this to help keep the pressure up with the larger clearances, and also run a high quality 20w/50 racing oil. Good oil DOES help.
Thanks for all this, Dave! I'm going to also ask Ed to comment on those restrictor kits.
I hired in to Olds in February of 1964, in the engine plant. I worked on the line where they put in the cranks, cams, and the timing chains on. There were 8 different pistons for standard bore, same for .005 over bore, and the same for .010 over. The blocks and cranks were color coded, you matched up the colors on the crank to the colors on the block for which main bearing to use. There were four different main sizes, big blocks and small blocks ran down the same line. They started them up and ran them to set the timing when they came off the line. Every once in a while you would see one hanging that had a rod sticking out of the oil pan. When I transferred out of the engine plant, the department I was in and the next department down where they hung the pistons, was cycling every 15 seconds.
Wow, great comment, thank you for sharing your experience with that!
Please tell me if you can, what are the 5 blind holes on the front main of the crankshaft for.
It's been 50 years since I was in the engine plant, the only holes I can remember are some blind holes in the rod throws. I looked up blind holes in C/S, and it sounds like they could be there for when the C/S was machined and balanced. There were also four or five people that ran machines to balance the cranks after the flex plates were put on before they went into the blocks. That's what I came up with. Just what I got from looking it up.
Thanks. I seen them many times in 455 cranks. Never knew what that were for. I should have spoke with Joe Mondelo, I believe he would have the knowledge on there use.
Every Olds 455 ive seen that was revved up a little threw a rod every time.
I restricted my oil gallery to the top end in my Olds 425/455s. I've turned them 6800 rpm on the 455s, 7200rpm on the 425s. Shit works.
👍👍😎
And how did you go about restricting it?
I could listen to this man all day long about motors... He explains it so well and he is just full of freaking knowledge.. love it.Thanks for sharing the video..
Wow, thanks! 🙏
No he’s not, he’s clueless on Olds’ at least.
I love it when ED says I have one of everything, looking at his shop and all his videos I believe it. Another great video of explaining everything that happens when oiling. Great video, great job.
Awesome, thank you!🙏
It would be awesome to follow Ed around and just absorb some of his knowledge. Thank you for bringing him to us.
My pleasure - thank you
Thank you Ed and Barry I now know how I'm building my gasser engine
Nice! 👍
Built a NHRA legal "Stock" 1971 455 W-30 many years ago. It was shifted at 6800rpm. Made over 500+HP. And it was "Stock".... Usually ran E/SA.
Wonderful
@@BarryTsGarage These Oldsmobile engines are pretty good when ya sort out the oiling system.
Ok, time slips? No time??? Really bro, calling you out. What was your best ET? How many NHRA sanctioned races did you win??
@@hilleryclifford1350 well let me go back about 35yrs and dig it all up. I've built over 1000 engines since 1982. Get a life prick.
@@hilleryclifford1350 I built the fuckin engine, didn't own the car. It ran 11.60s.
i don't know why but i love automotive engine tech, thank you for doing these video's , just fascinating stuff.
Thanks for watching
The first car I drove was my dad's Olds Delta 88 with the Rocket 455. I'm lucky I survived being a 16 year old with that much power at his disposal!
As a Oldsmobile man I've always heard about the 455 Oldsmobiles oil problem but what about the early 400 and 425 blocks never heard of problems from them as well as the small blocks and all a 455 is is a stroked out 425 I feel opening up the oil drain back passage in the cylinder heads should be drilled out a little more and sanded with a sandpaper roll no need for oil restrictions if so I'd just run oil restrictions in the push rod hole size 😀 👍 😉 it's also said at 5250 RPM the oldsmobile oil pan is sucked dry during long RPM use. And comments are welcome as always peace and much respect to you Jason humphry
Thank you - I’m going to ask Ed about that 👍
@@BarryTsGarage sounds olds some thanks and as always peace and much respect to you
@BarryTsGarage I myself am currently doing a 350 oldsmobile diesel to gas conversion on a DX engine block and it uses a thrust plate to hold the roller hydraulic camshaft in place I learned through reading it will work on a 455 oldsmobile big block no problem but trying to adapt it to the 403 oldsmobile small block it won't work due to a slight oiling difference in the block interesting reading out there I don't believe it myself but I can't verify myself I'm planning on filming my engine building step by step on my channel 😀 👍
I've learned that a 455 oldsmobile has more bearing surface to cool than the 350 oldsmobile but no truth factor on why the 455 olds gets the oiling problem the most I know oldsmobiles to be hard on the number 7 and 8 connecting rod bearings and high volume pumps could suck the oil pan dry
The 455, 425, and the late 400 ALL had the same engine blocks, with the same oiling system.
I learned reading oldsmobile 455's have roughly 13 feet of bearing surface material that needs to stay covered in oil at all times
You should also discuss the oil gallery orifice-plug behind the rear cap that lubricates the distributor. This is often missed or left out and result in very low oil pressure.
Great idea
Excellent stuff
I really like ED'S stories & all his information that he has acquired over the years .
I would love Ed to work on my Australian HOLDEN HK 1968 ( GM Partner ) 186 Cubic Inch Straight Six .
Small engine you may say but with Triple Strombergs , Extractors it was a very strong & Great RACE Engine .
View Bathurst 500 HOLDEN TORANA GTR - XU1 . Over 500 miles on The Bathurst Racetrack Up & down hill it beat a Ford Falcon with a 351 Cubic Inch V8 .
Thank you Ed & Barry for all your Amazing Information . Best Wishes / ROBBIE - Australia .
Robbie, thanks for your comment here and wow sounds like crazy fun. I have to say I follow along a little bit the car hobby in Australia and I really appreciate the passion you have there. Great stuff! Cheers! Barry.
A diehard motor head looks at that new H-beam rod and piston like a woman looks at a diamond necklace 😂
🤣🤣 Right??
Super Olds some!!!!
I would love to hear that engine start. Nice!
You and me both!
@@BarryTsGarage Well, then talk to Ed. 😀
Clevelands are similar - especially the cast in front timing cover
Put a Cleveland in a full frame car with ALOT of weight.
It seems many are using restrictions in the pushrods holes. Or I should say pushrods made with a very small hole to restrict oil.
True
Thnx guys
Thanks for joining us
I would have loved to have heard a little more detail of that main cap that the oil pump bolts to,, I've never seen that before..
I found some pictures online,, it's a strange thing....
Thanks for the feedback! If I get a chance to circle back, I will and post an update... 👍
@@BarryTsGarage It's an interesting video worthy piece of oddball engineering..
One of my favorite things !! lol
I’ve noticed that - I like the unusual or novel stuff too 👍👍
I’ll try to ask Ed when the parts are all in 🙏
@@BarryTsGarage Yeah it's fun,, and is there another mass produced V8 where the oil pump bolts to a main cap ??
That's some serious oddballery and I LIKE it !! lol
How’s your day going just purchase a 1970 cutlass sx with the 455 motor what’s the best oil I should used motor bone stock thanks
I’ll ask Ed
Drop it into a 442!
I had a olds 455 it was a runner
I believe that
Ah, Barry! About 3/4 ths through you almost exposed yourself as being very knowledgeable about engine oiling lol. Awesome
😂😂👍
This is clever.. i do not have experience up close to know of if this is a good, fair, bad oiling system. Looks clever, and would appear to make it exceptionally easy to clean, especially if you beed/bead (?) blasted it with steel shot in the tumbling machine? I could be wrong in that idea..where as the galley oil passages on other blocks, never mind the new casting of today's 4, 6, 8 cyl engines, especially on foreign engines of today.. they are a maze of sorts for junk to get stuck, lost, built up, etc... but this Olds 455 system seems totally accessable straight thru designing?
I dont know if this Olds 455 galley system is longer then the other typical big-3 V-8 blocks, shorter or longer or the approx same? Just clever is all.
I like your comment, you bring up some good points 👍
Did a 481x race engine come about based on Oldsmobile
I don’t know - I’ll ask Ed what he knows… 👍
Thanks alot iv been trying to find out how the 481x came about
@@PriendraChutterpaul 481X is a Allen Johnson design based on a hybrid Olds/BB Chevy architecture. No stock parts will bolt to it. Chevy bell housing pattern. Solid billet block and heads. 4.84 bore space.
@@PriendraChutterpaul Pretty much unlimited power potential. Extremely durable.
The hole in the galley plug is to lubricate the timing chain..
That’s exactly right
The stock Olds oiling system pretty much sucks. The fact that it oils the lifters first, before the crank gets it's oil is a pretty big weakness.
An aftermarket block with a totally redesigned priority mains oiling system IS the way to go if you are building a big power Olds. It's expensive but WORTH every penny, over re-doing a stock block build time after time. Over 600 or so horsepower with a stock block big Olds, and you have yourself a time bomb. It's just a matter of time before it goes off... 💣
Mondello makes those oil plug kits.
Very good thanks for adding that info
A galley is a kitchen on a ship,, while an oil gallery is the ducting in an engine to transfer oil to the bearings.
OK, the terms are now almost interchangeable but hearing “oil galley” sort of damages my ears.
Thanks for hanging in there!
A gallery is where you hang art. I prefer galley.
😂 formula 455 HO jjjjj 4 sp Pontiac no many around any more I used to have one heavy car but strong enough to smile
I still the have my olds 468 cubic inch 11.1 CR 6,800 rpm all day beat 427 side oil Ford's on the street & a lot of Pontiac too Buicks lol 4.88 gears will make them bitch run lol
Wow does sound like great fun
@@BarryTsGarage Oldsmobile can fly with the right cam & gears ,now with all the new technology is idiot proof
Tiny hole keeps the timing chain alive! lol
Yes!👍
Years ago....mid 90,s here in East tn. was a local boy that ran a Mondello built 455 in a 69 cutlus that was MEAN with a 3.55 gear that was really fastest street car around here in the mountains....get the oiling right/combo...mad me a beleiver in my 427 big block chevelle/3;90 gear.Plus he had a fiberglass front-end that was Hard to notice.
No Nitrious/turbo/supercharger.
Ol boy be driving with beer in hand most of the time eating them Lortabs like candy!
🤣