can someone decode this for me please (bigblock)
 

C7B121332

I found a mid 70s chevy 2wd crew cab with a 454/th400 in it..the old guy said i could have the whole truck for 300 bucks, it ran when it was parked 3 years ago. i want it for the motor and trans to put in my gmc one day, thought the price was right so i just want to find out exactly what i might be getting...thanks

Derek

For 300 bucks Canadian, you can't go wrong. Surely there has to be that in parts after the motor and trans are out.

yeah, a guy i work with wants the rest of the truck , he said he would give me 150 for it so im getting half back. just curious as to the specs on this motor, i know they arent high hp but just wondering if it had a 4 bolt main etc....

Is that the number directly above the timing chain housing, thats what you need.
Don

when standing infront of the truck looking at the motor it is on the left side right behind the alternator infront of the head at the base of it...if that makes sense..im pretty sure it is the number used to identify the motor

thanks, Derek

ttt

You find what you were looking for on your #'s

nope...anyone???

try this http://www.chevymania.com/partsid/main.cfm

I may be wrong on this but I think the ID number on BBC is on the pass.side at the back end of the block - Ive looked at all my info and can find nothing with the number you gave.HTH:::CB

www.mortec.com is a good site for looking up #s. Also tells you where to get the numbers from on the block and heads.

Dan

You need to get the numbers off the rear ledge drivers side as well to make a positive ID. Also pull the valve cover and give us the head casting numbers. The only place I could find a the code "C7B" showed it was for a 305 :( here is what mortec says about location of numbers on Big blocks.

The diagram above shows where each of the casting identifiers is located on the engine. (1) shows the location of the HEAD CASTING NUMBERS and the HEAD CASTING DATE located under the valve covers, in the rocker arm valley. (2) shows the position of the BLOCK CASTING DATE on the rear ledge of the block near the bell housing mounting surface. If you have an early big block or a late model smallblock, the BLOCK CASTING DATE may be on the passenger side of the engine block, (see 2A), instead of the rear ledge of the block. Some smallblock blocks may also have the BLOCK CASTING DATE on the driver's side of the block. (3) indicates the position of the BLOCK CASTING NUMBER. Later blocks may also have the size of the engine displacement in liters listed at (3). (4) indicates the position of the ENGINE ASSEMBLY DATE/SUFFIX CODE and partial VIN code information on the front of the block. (5) on the rear flange of the block, on the drivers side near the oil filter pad, is an alternate block location for some VIN codes. (6) indicates the sides of the block where some blocks may have the size of the motor indicated in cubic inches or in liters. The last three numbers of the block casting number may also be repeated in this location.