confused on engine casting numbers
Thread Starter
Pro
Joined: Jul 2011
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confused on engine casting numbers
i have a 1957 chevy with a supposed 300 hp 327 in it but i wanted to clarify if it was true.
the block casting numbers read TIII56F
can anyone help me out?
I know the T stands for Tonawanda.
the block casting numbers read TIII56F
can anyone help me out?
I know the T stands for Tonawanda.
Last edited by 69cvette; Nov 27, 2011 at 10:20 PM.
Race Director
Joined: Jul 2001
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That's not a 'casting number'- it's a machine code that I presume was found on the stamp pad at the front right side of the block.
T would be Tonawanda where the engine was built
1115 means it was built on November 15th, year unknown
6F is unknown, possibly a truck or marine installation, not a Corvette.
T would be Tonawanda where the engine was built
1115 means it was built on November 15th, year unknown
6F is unknown, possibly a truck or marine installation, not a Corvette.
Burning Brakes
Joined: Dec 2010
Posts: 848
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From: CA
the block casting numbers read TIII56F
The "F" designation was used in the full size cars in 1955 (265/162), 1956 (265/170) and 1957 (283/185). (It was also used from 1958 to 1961 in the 348, but I doubt that's what you have.)
What's the casting number on the rear of the block? That will narrow it down a bit.
Ed
Last edited by restoman1; Nov 27, 2011 at 10:36 PM.
Race Director
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From: Athens GA
St. Jude Donor '12-'13, '15- '16-'17-'18-'19, '21
http://www.nastyz28.com/sbchevy/sblock.php
Check out this site for help with id on your block.
Looks like the old mortec site is gone but the info looks good here.
Bman
Check out this site for help with id on your block.
Looks like the old mortec site is gone but the info looks good here.
Bman
Thread Starter
Pro
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maximize the pictures to get the best view
alright i'm still trying to this day to figure out my casting number because I'm dying to know what engine i have and what it was out of, someone told me something crazy and that i might have a 283 because the number of 327's that came with powerpack heads was so much lower. do you think its a 283 from what you can tell and what I've provided?
any telltale signs of a 327 over a 283?
Last edited by 69cvette; Feb 12, 2012 at 02:18 AM.
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Pro
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It seems as though you will have a hard time reading the casting number which as mentioned is stamped on the webbing of the bell house flange. Without that casting number your journey will not go much further. However, pull the valve covers and post the cylinder head casting numbers. Using those casting numbers we can determine what the heads are and possibly lead us to what they are on family wise.
Thread Starter
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the fact that the back of the head is too close to the firewall get behind the engine, i've tried squeezing a camera to snap a picture but that wont work either. i dont even want to touch the car til i know what engine it has, i've never thought this could be so difficult and so frustrating in my life lol.
Pro
Joined: Feb 2012
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Valve covers. 4 bolts each. Pull them and post the casting numbers of the cylinder heads. Also, try unplugging the wires and removing the distributor cap for more access to the casting number on the back of the block. A squirt of brake cleaner may help to wash away some of the grime that can sometimes hide the numbers. If you can get a rag or a brush back there it will help too.
Thread Starter
Pro
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alright i may try that but here's the best pictures i could get with my camera
i see some stamping but that's not it and i don't think that helps me either.
but this is how close it is to the firewall. that's the edge of the valve cover. that's as far as i can see, its probably tucked away under the valve cover.
ill pull it some other day when its warmer.
i see some stamping but that's not it and i don't think that helps me either.
but this is how close it is to the firewall. that's the edge of the valve cover. that's as far as i can see, its probably tucked away under the valve cover.
ill pull it some other day when its warmer.
Drifting
Joined: Aug 2004
Posts: 1,883
Likes: 124
From: Lubbock TX
http://www.nastyz28.com/sbchevy/sblock.php
Check out this site for help with id on your block.
Looks like the old mortec site is gone but the info looks good here.
Bman
Check out this site for help with id on your block.
Looks like the old mortec site is gone but the info looks good here.
Bman
http://web.archive.org/web/200805130...ec.com/bbc.htm
Instructor
Joined: Jan 2012
Posts: 103
Likes: 0
From: Sonoma Ca.
I believe the casting # is under your throttle or kick down bellcrank, its not a stamping its a raised cast # for 64-67 327-300hp it would be 3791362, #'s vary between what yr. if you pull the valve cover the casting # you will get is the head casting # which will help to identify if its a 250 or 300 hp, its time to get dirty.
Last edited by anips; Feb 12, 2012 at 05:56 PM.
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okay well i think I've finally figured it out without looking at the casting numbers
i read the engine number on the front wrong and it was TII5GF NOT 6F
i looked up GM suffix codes and this is what I got
GF 1955-56 265 162 MT B, A/C
GF 1957 283 250 TG B, FI
GF 1965-67 283 195 PG
195 earth rumbling horsepower!!
its a far cry from 250 HP lol
give me all the more reason to tear this 283 out ASAP
i read the engine number on the front wrong and it was TII5GF NOT 6F
i looked up GM suffix codes and this is what I got
GF 1955-56 265 162 MT B, A/C
GF 1957 283 250 TG B, FI
GF 1965-67 283 195 PG
195 earth rumbling horsepower!!
its a far cry from 250 HP lol
give me all the more reason to tear this 283 out ASAP