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#1 |
Registered User
Join Date: Sep 2015
Location: ponca city
Posts: 19
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Casting numbers locations, engine identification
I have no clue what engine I've got. All I know is its a v8. The PO told me its a 327 that was dropped in, however, most of the stuff he's told me has been false.
All of the searching I've done has told me to look at the ledge behind the heads for the casting numbers to identify my displacement. But when I went to go check it out, I discovered there were no "ledges." Where the valve cover meets there is a straight drop off, no ledge. Does anyone know where else I can look to find these numbers? |
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#2 |
Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,622
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Re: Casting numbers locations, engine identification
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#3 | ||
"I ain't nobody, dork."
Join Date: Sep 2007
Location: Whidbey Island, Washington
Posts: 8,940
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Re: Casting numbers locations, engine identification
In front of the passenger side cylinder head. There will be a flat "pad" with numbers stamped on it just in front of the valve cover. It is part of the machined deck surface of the engine block.
The rear will be a cast in number on the engine block on the drivers side on the rear flange where the tranny bellhousing bolts up. Its behind the cylinder head. They will probably both be covered with eons of crud and oil... Gary
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'cuz chicks dig scars... My 1972 GMC 1500 Super Custom (Creeping Death) "long term" build thread. The Rebuild of Creeping Death after the wreck Quote:
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#4 |
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Location: Washington,Il
Posts: 632
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Re: Casting numbers locations, engine identification
The "ledge" is where the transmission bolts to the block( for the casting #'s and date). Just below the block deck.
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It builds on my intelligence when I make a mistake, Boy am I building on it! '67 C-10,'70 Nova SS ![]() |
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#5 |
Registered User
Join Date: Sep 2015
Location: ponca city
Posts: 19
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Re: Casting numbers locations, engine identification
Thanks guys! I didn't realise that the ledge would be that far down. As you can see, I'm new to working on anything(that's the reason I bought this truck, to learn after all). I was able to find the numbers on the rear drivers side, 3970010. It got dark on me before I could hunt down the others. Thanks a lot!
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#6 | ||
"I ain't nobody, dork."
Join Date: Sep 2007
Location: Whidbey Island, Washington
Posts: 8,940
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Re: Casting numbers locations, engine identification
That casting number tells us it's either a 350 or a 327. So you will need the numbers off of the front pad to get the "suffix code" to tell us what it really is.
Gary
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'cuz chicks dig scars... My 1972 GMC 1500 Super Custom (Creeping Death) "long term" build thread. The Rebuild of Creeping Death after the wreck Quote:
Quote:
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#7 |
Registered User
![]() Join Date: Jan 2012
Location: Washington,Il
Posts: 632
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Re: Casting numbers locations, engine identification
"Pictures are worth a thousand words" just sayin'. It would be nice if you could get head casting #'s also.I realize this takes pulling the valve covers,but if they are leaking,the valve cover gaskets, ?eh!
I like cyl heads,can make an engine factory,streetable or freakshow!!!!
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It builds on my intelligence when I make a mistake, Boy am I building on it! '67 C-10,'70 Nova SS ![]() |
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#8 |
Registered User
Join Date: Aug 2014
Location: Alabama
Posts: 50
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Re: Casting numbers locations, engine identification
An 010 block is almost always going to be a 350.
I know there are some references to some being 327 but I would like to see one because a lot of 010 blocks are 4 bolt mains.
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1972 C10 Cheyenne 402/TH350 1985 GMC 1500 Sierra Classic 350/700R 1986 K20 427/NV4500 1986 K20 Sub 406/TH400 "Life's tough.....It's enough tougher if your stupid." John Wayne |
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#9 |
Registered User
Join Date: Aug 2006
Location: Redmond, WA
Posts: 6,332
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Re: Casting numbers locations, engine identification
Remember they didn't put VINs or sequence numbers on truck blocks, so all you'll ever know is whether its a truck block intended for that year, carb, and trans.
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1970 GMC Sierra Grande Custom Camper - Built, not Bought 1969 Pontiac 2+2 427/390 4-speed Coupe 1969 Pontiac 2+2 427/390 4-speed Convertible |
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#10 |
Registered User
Join Date: Sep 2015
Location: ponca city
Posts: 19
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Re: Casting numbers locations, engine identification
Been working a lot of overtime so haven't had a chance to get at it again, but I'll post pics and an update asap.
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#11 |
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![]() Join Date: Dec 2015
Location: Prescott Arizona
Posts: 621
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Re: Casting numbers locations, engine identification
Good, I haven't been the only clueless soul. Yes I'm dredging this old thread up.
I've looked at numbers, I must not be reading it correctly. ![]() ![]()
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1968 Long Bed 2016 Honda Civic Coupe EX-T ticket magnet |
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#12 |
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Location: Lehi,Utah
Posts: 1,330
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Re: Casting numbers locations, engine identification
Looks like it may be a 307.
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#13 |
Registered User
![]() Join Date: Dec 2015
Location: Prescott Arizona
Posts: 621
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Re: Casting numbers locations, engine identification
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1968 Long Bed 2016 Honda Civic Coupe EX-T ticket magnet |
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#14 |
Registered User
Join Date: Feb 2016
Location: Trenton,Ontario & South Carolina
Posts: 755
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Re: Casting numbers locations, engine identification
307 s should have 3970020
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#15 |
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![]() Join Date: Dec 2015
Location: Prescott Arizona
Posts: 621
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Re: Casting numbers locations, engine identification
What am I missing? Did I find the correct spot, and is everyone looking at the smaller font numbers on the left, or the bigger on the right that shows CCC? (my first picture) I was also told this must not be the original engine, so it could be any year.
This is what I'm looking at: https://www.mortec.com/castnum.htm *edit* Got help deciphering the ID#: Some partial VIN numbers [So it's a car engine, as trucks had no VINs.] T = Tonawanda, NY 04 = April 01 = First CCC = 1971 307 V8 originally mated to a Powerglide
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1968 Long Bed 2016 Honda Civic Coupe EX-T ticket magnet Last edited by 89AKurt; 03-03-2019 at 02:28 PM. |
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