Tilted Forum Project Discussion Community - View Single Post

Johnney_Boy · 09-26-2007, 02:35 PM

I just got a 1971 2 door coup Nova with a three speed automatic transmission I was trying to decode the Engine Block stamp located on the front passenger side below the water pump and altinator I found two sets of numbers

18A120581 ( I figured it is a Chevy block made in Atlanta, guessing 1978, no idea on the rest of the vin numbers).

The next series of numbers on the block are 10821DE, I have no idea what they mean

Could you help me decode these numbers?

Hey Thanks guys but after tearing down the engine to install a new manifold and card I discovered that the numbers had been ground and re-stamped, so that would make this a cheater block, I do believe that this block is a 350, the heads have been extensively machined, I don’t believe that people would go to that expense for a 307.

09-26-2007, 02:35 PM	#1 (permalink)
Johnney_Boy Upright	Help Decoding Engine Stamp for Chevy 350 I just got a 1971 2 door coup Nova with a three speed automatic transmission I was trying to decode the Engine Block stamp located on the front passenger side below the water pump and altinator I found two sets of numbers 18A120581 ( I figured it is a Chevy block made in Atlanta, guessing 1978, no idea on the rest of the vin numbers). The next series of numbers on the block are 10821DE, I have no idea what they mean Could you help me decode these numbers? Hey Thanks guys but after tearing down the engine to install a new manifold and card I discovered that the numbers had been ground and re-stamped, so that would make this a cheater block, I do believe that this block is a 350, the heads have been extensively machined, I don’t believe that people would go to that expense for a 307. Last edited by Johnney_Boy; 09-29-2007 at 05:51 AM..