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07-13-2017, 11:11 PM | #51 |
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Re: numbers matching? original engine?
Very nice!
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07-13-2017, 11:38 PM | #52 |
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Re: numbers matching? original engine?
Interesting. If you have access, would you snap a photo of the casting numbers. I found that my casting numbers are on the side of the block versus on the rear transmission mount area. I was thinking this was unique to Catherines engines but not sure if they are all the same.
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07-14-2017, 08:18 PM | #53 | |
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Re: numbers matching? original engine?
Quote:
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1970 C-10 LWB "Blu" Instagram (current build pictures) 70_nc_c10 |
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07-15-2017, 08:47 PM | #54 |
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Re: numbers matching? original engine?
Ok, like some of the other guys have shown, here is the casting number off my original block. "K05 08 TBB"
K - St Catharines 05 - May 08 - 8th day TBB - 1970, 350, 255 hp, 4 bbl, cv/fd (?) manual transmission 3 spd. Here is my protecto-plate And here is the close up of the matching engine number.
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07-15-2017, 08:52 PM | #55 | |
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Re: numbers matching? original engine?
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07-15-2017, 10:28 PM | #56 |
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Re: numbers matching? original engine?
NC John, Just for fun, I went and decoded the rest of your P-O-P M0D28 is your transmission code/number M = Muncie 3 speed 0 = 1970 D = April 28= 28th, April 28th 1970 Build date DE0511K is your rear axel code/number DE = TDE(T left off because in 1970 it's redundant) = C10 3:07 open 05 = May 11 = 11th, May 11th 1970 Build date K = GM of Canada, assembly plant R = carb code, Rochester 5 = Build month of the Truck, May Chevy emblem = Manufacture, Chevrolet Sold to: Clyde Jones Route 3 Mocksville, North Carolina on September 17th 1970 Your transmission code/number will be stamped on your transmission Your rear axle code/number will be stamped on your rear axle On the redundancy of the T in your axle code. GM often did this on the P-O-P. You should have TDE on the rear axle itself.
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07-16-2017, 10:46 AM | #57 | |
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Re: numbers matching? original engine?
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First pic is where most SBCs have them, the second pic is where mine is (neither pic is of mine). Your K05 08 TBB are actually stamped into the block. the date code would be part of the casting process. |
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07-16-2017, 02:57 PM | #58 |
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Re: numbers matching? original engine?
My date codes are also cast onto the passenger side of the block (sorry about the orientation, I didn't see how to fix it in the forum photo album).
50 ft view: Close up:
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1970 C-10 LWB "Blu" Instagram (current build pictures) 70_nc_c10 Last edited by NC_John; 07-16-2017 at 03:02 PM. |
07-16-2017, 03:06 PM | #59 | |
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Re: numbers matching? original engine?
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Of course, that has been since changed to a T-56 and the 3.07 open diff is now a 4.56 eaton posi Next time I am under the hind end I'll take a look at rear end casting numbers just for giggles (its still the original housing).
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07-16-2017, 03:11 PM | #60 |
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Re: numbers matching? original engine?
This is a great thread
Thanks for keeping this one going Guys👌 Very informative |
07-16-2017, 03:22 PM | #61 |
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Re: numbers matching? original engine?
Rebuild your 350 and add fi.
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07-16-2017, 03:26 PM | #62 |
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Re: numbers matching? original engine?
That would be wayyyyy cheaper than any LS swap. Before I pulled it, I installed FiTECH EFI on the small block. It made a heck of a difference and felt like it added 100 HP. The guy who bought it off me put it on his small block and said the same thing. It completely changes the personality of the engine.
If I knew what this LS swap was going to cost before I started, I definitely would have reconsidered....
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07-16-2017, 04:43 PM | #63 | |
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Re: numbers matching? original engine?
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I read it as "0 E 7". Looks to be May 7, 1970 as the casting date. One more question if you don't mind, what was your build month (door jamb sticker). I would expect it to be May, June, or July. Thanks for checking this. Its things like this that can prove or disprove if a truck was born with an engine (VIN stamp aside). |
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07-16-2017, 05:01 PM | #64 | |
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Re: numbers matching? original engine?
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07-16-2017, 05:17 PM | #65 |
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Re: numbers matching? original engine?
His Proteco plate says May
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07-16-2017, 05:53 PM | #66 |
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Re: numbers matching? original engine?
rebuild your 350,add fi tech fuel injection and a 700 r4.
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07-16-2017, 07:35 PM | #67 |
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Re: numbers matching? original engine?
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07-16-2017, 11:51 PM | #68 | |
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Re: numbers matching? original engine?
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the machining process's were/are different fi vs carbs the lubes used or unavailable then vs the lubes used and avilable now and a comparrison simply based on the milage achieved then vs now is not entirely accurate my company had early 70'strucks that burned propane. these trucks regularly got upwards of 300k miles on them. many volvo's and mecedese benze's got easily close to 300k miles on them. no. not diesles either. I understand what your point is but milage alone is not the only factor that differentiates real engines from that 'other' type. many variables, variables not differences. FI does help atomise todays fuel that carbs seem to have difficulty atomising. |
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07-17-2017, 12:24 AM | #69 | |
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Re: numbers matching? original engine?
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I am only a contractor That has had a bunch of chevy trucks, in the last 30 years Are you saying, if I rebuilt my 67-72 chevy engine And used today's lubes It would last longer? I don't know how to work on carburetor And Definitely not today 's fuel injection I don't even know how atomizing works My only conclusion Is The old trucks went around 100k(or a little more if you were lucky) And My mid 90's and up trucks Basically Go to 300k Just by changing the oil on time I was once told (Don't know if it is true or not) When emissions came into play All, the tolerances, had to be shored up on american vehicles Therefore They lasted longer Like Mercedes and Porsche Because, they were already ahead of us, by then My father in law was a European mechanic. He has always said Both of those cars have always been at the top Their(tolerances) Are almost like race engines |
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07-17-2017, 12:32 AM | #70 |
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Re: numbers matching? original engine?
Regarding engine longevity, I agree with most of the reasons already stated including improved fuels and oils as well as improved tolerances, and machining. I don't recall anyone mentioning RPMs at highway speeds. Overdrive transmissions have reduced 65 MPH RPMs from about 3000 to closer to 2000. Hell, my '99 Vette with a 6-speed manual barely turns 2400 at 100 MPH!
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07-17-2017, 12:39 AM | #71 | |
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Re: numbers matching? original engine?
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Good point👍 Like everything else Everything Just gets perfected in time |
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07-17-2017, 01:40 PM | #72 |
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Re: numbers matching? original engine?
Im in the camp that values originality. For others who want to rebuild their original sb motors be mindful of decking the block as this can remove the codes from the machined pad on the rh side of the block. For fun here are the stamped codes on the original 350 motor and th 350 tranny now rebuilt and ready for more decades of use back in my Highlander Blazer: http://67-72chevytrucks.com/vboard/s...8&postcount=60 - i have the POP for same.
I drove to texas to get a code correct (albeit not original) 350 motor when i rebuilt my 72 k20 but bolted it to a 700r4
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1972 K5 CST Highlander Blazer: http://67-72chevytrucks.com/vboard/s...d.php?t=708547 1972 K20 Cheyenne Super: http://67-72chevytrucks.com/vboard/s...d.php?t=528308 Members met: ORANGBLAZ, 2003 silverado, MikeCofield, BB72CHEVKT, Duncan&Son, Sameyrasmea72, THENEWMEXICAN, HotRod C/10, brianthelion02, Sport/Truck, ryanroo, michael bustamante, Dirt's72, Already Gone, WestButteTruck, 57taskforce, Moreyel, painterljp, AASmedic, SoCoC10, Lumaestas, carbuff382, Chevyland Last edited by DeadheadNM; 07-17-2017 at 01:59 PM. |
07-17-2017, 03:32 PM | #73 | |
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Re: numbers matching? original engine?
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This was/is common practice when restoring muscle car Of the 50's,60's and early seventies You see it advertised all the time when. These cars are being sold. "Numbers Matching" I had a 57 vette, back in the day. With incorrect motor When it blew up. I bought correct block from here out west Had to get correct heads from a guy in Chicago This was before internet was so dialed in Hemings Motor News , was the google search option back then When that car sold It was worth many thousands more Than it would have been If it was not #s matching I know, it is not as valuable to most on these trucks But I still am also fan of originality. |
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07-17-2017, 04:19 PM | #74 |
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Re: numbers matching? original engine?
In post 44 I showed pictures of my Protect-O-Plate and the pad stamping. Here is a more readable mirror image of the P-O-P, the casting date from the rear of the block, a repeat of the engine date stamp, the TH400 tag, and the ID on the Eaton H052 axle .
- Engine cast date: K278= Nov 27, 1968 (not on P-O-P) - Engine pad stamp: V1130XD= Nov 30 (1968) assembly. XD= 1969 350, turbo hydramatic, 4 barrel, C-10 to C-35 trucks. - TH400 tag: 69T 328= 328th day (1968). 1968 was a leap year so this corresponds to Nov 23. 1968. - Axle ID: JU1122J1= Nov 22 (1968) (P-O-P shows JU1120J. The axle is original. GM has been known to make mistakes.) It's interesting that the selling dealer chose to put the miles at delivery (00034) on the P-O-P rather than the delivery date as on the other P-O-Ps shown on this thread. Last edited by FirstOwner69; 07-17-2017 at 04:59 PM. |
07-17-2017, 04:23 PM | #75 |
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Re: numbers matching? original engine?
The number one thing that has prolonged engine life and extended it up to the 300K and beyond mark....is electronic engine management.
Basically a new fuel injected engine is running in perfect tune 99.999% of the time with respect to air/fuel mixture, timing, etc. Supposedly when you tear down a 100K motor now...inside it looks like new. No carbon deposits or plugged oil galleries, etc. That is why the mileage is better as well....perfect, optimum tuning. Plus you can run higher compression again these days and if the engine starts to 'ping' and pre-detonate...the engine simply retards the timing automatically and electronically with the anti-knock sensors until it stops...thus protecting the engine.....ba-da-bing! As a result they have been able to bump up the compression ratios again from the 1970 and 1980 engines...which were pretty low. On the older carburated engines you were lucky if it stayed in original tune for a month. You would literally have to to tune it daily to have it compete for the near perfect range a modern engine runs in. ....basically not even a practical comparison. Regardless...from a hobby standpoint....I still love tuning my old 350....carb and all!! all Good Coley
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