Decoding the 1972 Corvette 454 LS5 Engine Casting Numbers
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- เผยแพร่เมื่อ 15 ก.ย. 2024
- Tonight I'm taking a look at the casting numbers and date/suffix codes on the 1972 Corvette 454 LS5 restoration project to verify if this is the original motor.
To see about my discovery of this 1972 Corvette 454 Big Block -
• 1972 Corvette 454 LS5 ...
To see my Corvette videos about 427 and 454 Corvettes -
• The Mighty Corvette 42...
To see my Corvette and Parts Tear Down Videos -
• Corvette and Parts Tea...
To see my Corvette How To Videos -
• VetteSource - Corvette...
#c3corvette #454corvette #corvetterestoration #bigblockcorvette #vettesource
Thanks for watching👍
Good morning VetteSource, I enjoyed this video on this Corvette and the 454. In 1982 I purchased a 1982 Corvette and enjoyed it for many years. I currently own a 1999 Corvette that has needed a TLC for sure. I hope to own a 1968-1972 in the coming years. (I need to hurry up since I am in my late 60's hahaha...) I have seen a couple of your videos and plan to watch more today. I have subscribed and will have to check out more especially the C5's. Thanks for being here for us Corvette owners my friend. Take care and be well.
Thanks, appreciate the feedback👍. Glad you're enjoying the videos. One things for certain, the Corvette bug is nearly impossible to get rid of, and it's great to be able to use TH-cam to share the passion for these great cars with my fellow enthusiasts.
@@VetteSource Yes indeed my friend. Please keep the Corvette videos coming. Take care and be well.
And you as well👍.
I’m 54 and in the same boat, 68-72 are my favourite, I don’t care if numbers are matching, but I want at least 450hp minimum. But would also love 550ft tq.
One fascinating thing to me, and I wish there was more info on, is which iron ore carrier may of hauled the iron ore for these parts from, where did it come from? It would be cool to know my '71 Chevlle has metal that the Edmund Fitzgerald hauled, or even the Arthur M. Anderson. Tonawanda, near Buffalo, cool, I was born in Rochester, NY, that makes them from more near home, though my car was put together in Texas, the rear end though was cast in Buffalo. I tell you what else would be fascinating, if someone was able to talk to people who worked there during there years and get some of there thoughts and opinions on things, times then as far as cars were concerned.
That is an interesting question. I'm curious if there was any difference in the raw ore material between the factories.
Had one of these give to me which I promptly built and installed in my 69 Chevy pickup. Wow 😳 tires would smoke if you floored it at any speed up to 35mph.
Like the old sayings goes, no replacement for displacement😁
Hey, I have a block that I am trying to figure out what it was probably used in. Casting number 3916321, Cast Date J167, Pad Stamp CE854859, Starter stamp T117. Four bolt mains, Pass Hi Perf 1X. It is standard bore, 427.
Hey Idaho, that's an earlier production 1968 427 cast in October of 1967. The CE stamp on the pad indicates it was a GM counter exchange engine, probably used as a warranty replacement engine. Even without a specific suffix code denoting the exact RPO/HP designation, it's a 427 4 bolt standard bore and still a highly desirable casting in the vintage car world.
@@VetteSource Thanks a bunch for the information! Maybe it was used in a Corvette.....It has a large threaded hole near the oil filter which I don't know what that was used for.
Perfect video as always. I tried to make a couple video's but I don't speak as smooth and correctly as you. Keep em coming and I will be watching the Yellow Formula video next.
I understand completely. Public speaking seems to be a natural challenge for most of us. I used to avoid it like the plague until I was forced into it many years ago. Now I just have to remember when to stop talking😂. Thanks again for the feedback👍
kinda true on build times. However, my 68 L79 Corvette was ordered 6/10/68 but the date of production
wasn't until 07/26/1968 (that's straight from the build sheet). engine cast date is (F) (06)/11/68 .
So yes you can have a wide time frame from order date and production date. Gm had motors sitting for 3-6 months,
that's why NCRS allows up to 6 months.
Definitely, examples like your car happened every so often, so it's not really a cause for question in most cases.
However, in my opinion as the restoration craze took off in the late 70's/early 80's you began to see these long gaps between engine and car build dates more frequently, which is most telling considering the increase in value associated with "matching numbers".
Sounds like a great car you have, the L79's are great fun for cruising the open road👍.
@@VetteSource yes it's a great car although the engine in it now is a 388 Stroker and the original motor is shrink-wrapped on a stand, it's a frame off restoration process. but totally worth it once it hits the open road again LOL
Yep, smiles for miles😁
396 had a bore of about 4.125, the 427 and 454 had a 4.250 bore. Back then, long before the LS , there was NOTHING like a big block and a four speed
Nubbins, thanks for sharing the info. The big blocks are definitely something to behold. Sad thing is most youngsters don't get to experience them firsthand, so they have no idea how good they run and sound in comparison with the new industrial sewing machine engines they're producing today. 😁
I thought 71 stingray had 425hp, thought it was the same engine from the 70 chevelle 450hp but a bit lower hp.? Just asking cause you are the man, new sub here.
Hey Ranjit, thanks for the sub👍. The 71 Corvette LS6 was indeed like the Chevelle, with the exception that it had the L88 aluminum heads installed and lower compression pistons. That might account for the lower rated HP of 425 vs the 70 Chevelle rating of 450.
@@VetteSource which engine had the l88 heads.? Sorry.
@@duramax78
The 1971 Corvette LS6 had the L88 aluminum heads. Two 454 engines in 71, the LS5 with hydraulic cam and 365hp them the LS6 with solid cam, aluminum heads, Holley, etc and it was 425hp.
What is needed to convert a LS5 to LS6 corvette engine so it would be identical?
The difference in the two engines is basically the pistons, camshaft, cylinder heads, and intake. It is not a difficult conversion, but will require a complete teardown.
What does C6Z mean
C6 Z06 with the LS based 7.0L/427 CID engine
So doesn’t matter from 1970 to 1974 on a 454ci motor the block is all the same from 70 to 74 so what is the difference in them and how can you make the LS4 or LS5 into an LS6 454 is what I’m asking
The block is essentially the same, with different casting numbers and some being 2 bolt mains as opposed to 4 bolt.
Is this a 4 bolt main
Most likely not. By 1972 they had moved away from the 4 bolt main since these were lower HP and compression so it wasn't really a necessity.
@@VetteSource Thanks for your reply
What is a 72 crr 454 is it a425 h ls6
That is correct from what I am remembering and all the literature I've seen on the suffix codes. Are you lucky enough to have one of those beasts?
Thanks for the reply, yes I do. Is there a way to get in contact with you
YT is pretty sensitive about sharing contact info, but if you look in the description of my Shorts video you will find it there. You can also DM me on Instagram @VetteSource to touch base directly. Let me know if you have any difficulty finding it.
Am i Right in saying it’s low compression and not a very powerful engine, not very desirable, good for matching numbers but that’s it?
The 72 was indeed a lower HP version due to the new SAE horsepower ratings with lower compression, smaller lift camshafts, and more restrictive intake systems. However, even "smogged" as they were becoming these still had enough power to give you that seat of the pants rush, and of you knew enough could be modified for much more power.
@@VetteSource ok thank you for that, I thought they were just dogs, but they still had high torque #s.
For sure, all of the big cubic inch engines from that era create tons of that wonderful torque.
Were you ever a mechanic?
You're not a "know it all", in a bad way. You're just a guy who knows everything. Lol.
The only "formal" mechanic schooling I ever had was when I was trained to be an AH-64 Apache Crew Chief in the US Army. By then I was already an avowed gearhead/Corvette nut so it was only a matter of time until I figured out the inner workings of most machinery. It all comes back to what your passionate about, brother👍