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09-23-2005, 09:06 AM
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#1 |
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Registered User
Join Date: Sep 2005
Location: florida
Posts: 13
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Casting #`s
I have a 1972 C/10 with 402 big block. The Vin# is CCE142S172244. The casting number or the number I found stamped on a machined surface on the front passenger side of the block is T0310TLM. Is there any way for me to tell from these numbers if this is the origional 402. The sticker in the glove box says 400. Any help on either of these numbers will be greatly appreciated. I am taking the truck to an auto show in the morning and would like to be able to tell what I have. THanks, Joe Watson
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09-23-2005, 10:01 AM
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#2 |
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Registered User
Join Date: Apr 2000
Location: Chester County PA, USA
Posts: 1,228
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block suffix code reads:
1972 truck 402 210 HP TH 400 trans L-47 RPO according to nasty z-28 site
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72 k/10 short wideside 72 k/5 Blazer 72 K/5 Blazer - obstacle course racer 72 custom/10 8' bed 70 K/5 Blazer 67 C-30 GMC Flat bed 86 GMC K2500 Plow Truck 85 GMC K3500 84 M1008 85 M1008 77 G30 Motor Home 72 Sears 12hp Tractor Glenmoore, Pennsylvania Last edited by OLDCHEV4X4; 09-23-2005 at 10:04 AM. Reason: wrong info |
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09-23-2005, 05:25 PM
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#3 |
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Registered User
Join Date: Sep 2005
Location: florida
Posts: 13
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What does L-47 RPO mean? THanks, Joe Watson
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09-23-2005, 05:28 PM
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#4 |
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Registered User
Join Date: Dec 1999
Location: Old Mission, MI, USA
Posts: 2,510
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L47 is the code that GM used to identify the motor that is in the truck. It should appear next to the engine option where it appears on the sticker on the glove box door.
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Tim |
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09-23-2005, 07:02 PM
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#5 |
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Registered User
Join Date: Sep 2005
Location: florida
Posts: 13
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How can I tell if this is the origional engine? THanks, Joe
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09-23-2005, 08:49 PM
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#6 |
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Big Block
Join Date: Mar 2005
Location: Durham, N.C.
Posts: 1,649
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T0310TLM T=Tonawanda Plant 03= month built (March) 10=day built TLM=8cly, 400cid, 210 hp, 8.5:1 comp ratio, 4BC carb, TH Trans. TLM on your block shows it is for a 72 chevy truck. If your engine appears stock with all the original equipment and is equiped with a 400 trans it most likely is. B.B.
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09-24-2005, 08:15 AM
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#7 | |
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Registered User
Join Date: Dec 1999
Location: Old Mission, MI, USA
Posts: 2,510
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Quote:
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Tim |
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09-24-2005, 03:37 PM
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#8 |
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Registered User
Join Date: Sep 2005
Location: florida
Posts: 13
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Thanks, I was told by several people the same thing. I believe it is origional.
Joe |
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09-24-2005, 04:08 PM
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#9 |
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Account Suspended
Join Date: Feb 2004
Posts: 3,051
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210hp for a 402?
Whoa. I need to do something to liven this motor up a bit then. |
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05-06-2007, 11:33 PM
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#10 |
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Registered User
Join Date: Dec 2005
Location: alberta canada
Posts: 162
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Re: Casting #`s
My L 47 396 is fairly stock and hauls ass! ..soon..It might help too that truck took an 800 lb diet.. about that engine I like it ..its internally ballanced so be for worned its expensive to rebuil one ,,this one has 40 thou. on it and feels barely broken in ..it got bored 20 over high nines compression re curved again...distributor . hyd lifters oval port truck heads built for unleaded .mild RV crane cam edl intake 750 carb im trying soon I always ran a little 600cfm for economy..the truck is very quick and can still tow a big trailer 3 times as heavy as it is . then trailer drives truck not you.. just cause its a 2 bolt truck block dont let that fool you the bottom end can handle lots..just remember it was the one of the first crate bigblocks ! always an niceoption and a hell of a short cut if you cant be happy with 400 to 600 horses without juice
Last edited by albertarose; 05-06-2007 at 11:36 PM. |
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