Block I.D. help
Thread Starter
Safety Car
Joined: Oct 2005
Posts: 3,570
Likes: 1
From: Algonac Michigan
Block I.D. help
I have a "69 convertible that was made with a 350/350 The previous owner said it was now a 327.
The numbers I could see on the pad at the front of the right head read...T4A505610 V127OTMM. The 4th digit in the second group (the 7) has a line under it. I tried Mortec but I still can't figure it out. can anyone help?
Thanks
Sly
The numbers I could see on the pad at the front of the right head read...T4A505610 V127OTMM. The 4th digit in the second group (the 7) has a line under it. I tried Mortec but I still can't figure it out. can anyone help?
Thanks
Sly
Melting Slicks
Joined: Dec 2002
Posts: 2,390
Likes: 315
From: Belmont Michigan
That would be a Chevy truck 350. Either a '74 145hp. that came with a 2bbl. and auto, or a '80 170hp. that was equiped with a 4bbl. and auto. Would need the casting # and date to be sure.
Rich
Rich
Race Director
Joined: Sep 2005
Posts: 18,640
Likes: 121
From: Farragut,TN
sly vette, the first group of numbers and letters is the the assembly stamping the second is the vin deriviteve stamping. v1270tmm indicates flint assembly plant where the all small blocks were assembled the following digits were month and day of assembly and the three suffix letters denote the particular engine, the 1270 makes no sense as there is not 70 days in december. if it is a 327 it may be from an early 327 chev. the book i have only covers 68-82 as far as numbers go. if you can find the block casting number it might help.
Last edited by 694speed350; Dec 6, 2005 at 08:20 PM.
Melting Slicks
Joined: Dec 2002
Posts: 2,390
Likes: 315
From: Belmont Michigan
The casting # is on the top rear driver's side of the block. Behind the cylinder head, in front of the bellhousing. Casting date (example D-15-74) is in the same spot on the passenger side.
Rich
Rich
Thread Starter
Safety Car
Joined: Oct 2005
Posts: 3,570
Likes: 1
From: Algonac Michigan
Originally Posted by MidShark
The casting # is on the top rear driver's side of the block. Behind the cylinder head, in front of the bellhousing. Casting date (example D-15-74) is in the same spot on the passenger side.
Rich
Rich
Last edited by sly vette; Dec 8, 2005 at 04:46 PM.
Melting Slicks
Joined: Dec 2002
Posts: 2,390
Likes: 315
From: Belmont Michigan
Okay, you have a 3970010 350 block. The key here is the 3-letter TMM engine suffix. Anytime the first letter is a "T", it originally came in a truck. Since the 3970100 blocks were used in trucks from '69-'79, I'll put my money on it being the 1974 truck engine. TMM was the code for a 350-145hp. w/2bbl. and auto. trans. in 1974, as I said in my first reply. If you look closer on the passenger side of the block, I think you will find the casting date- the characters are much smaller than the casting numbers on the other side.
Rich
Rich
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Thread Starter
Safety Car
Joined: Oct 2005
Posts: 3,570
Likes: 1
From: Algonac Michigan
Any benifits to this engine. It had a cam(fairly heavy),headers,Edelbrock intake,holley750 carb.W/4 speed when I got it in Oct. But it still has the original valve train, as far as I can tell.
