Please help id this engine code - Chevelle Tech
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post #1 of 14 (permalink) Old Sep 29th, 10, 5:46 PM Thread Starter
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Michael
 
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Please help id this engine code

I have a 1971 chevelle with matching vin and fisher tag, but I'm pretty sure the engine was replaced. I have no idea what's it is, nor what's inside. I followed the directions on here and after removing some paint, I was able to fing the engine id on the front passenger side of the block.

CBJ128281

Any ideas what this is? No spaces. Nothing else.

This is my first classic car. It was given to me by my father. I'm getting kind of excited about it but want to know what I'm starting with before taking it to a performance shop for some updating. If this engine is crap I may just head on to a CE.

Thanks.
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post #2 of 14 (permalink) Old Sep 29th, 10, 5:59 PM
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Ethan
 
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Re: Please help id this engine code

Quote:
Originally Posted by man44a View Post
I have a 1971 chevelle with matching vin and fisher tag, but I'm pretty sure the engine was replaced. I have no idea what's it is, nor what's inside. I followed the directions on here and after removing some paint, I was able to fing the engine id on the front passenger side of the block.

CBJ128281

Any ideas what this is? No spaces. Nothing else.

This is my first classic car. It was given to me by my father. I'm getting kind of excited about it but want to know what I'm starting with before taking it to a performance shop for some updating. If this engine is crap I may just head on to a CE.

Thanks.
Can you recheck that? All I can find is CBG. Which is a '71 350. Maybe get the casting date off the rear of the block. Usually looks like E161 or D250, etc.

Thanks,
Ethan

Ethan

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post #3 of 14 (permalink) Old Sep 29th, 10, 6:03 PM Thread Starter
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Michael
 
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Re: Please help id this engine code

Can I get the casting date without pulling the motor?
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post #4 of 14 (permalink) Old Sep 29th, 10, 6:05 PM
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Ethan
 
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Re: Please help id this engine code

Yes you can. Your just going to have to lean over the engine to get it. Flashlight would be handy, too.

Ethan

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post #5 of 14 (permalink) Old Sep 29th, 10, 6:07 PM
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Re: Please help id this engine code

Ethan ,that looks like a part VIN.
C = Chevrolet
B = 1981
J = Janesville
128281 = sequential build number

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post #6 of 14 (permalink) Old Sep 29th, 10, 6:10 PM
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Ethan
 
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Re: Please help id this engine code

Quote:
Originally Posted by Mike View Post
Ethan ,that looks like a part VIN.
C = Chevrolet
B = 1981
J = Janesville
128281 = sequential build number

Look on the front of the block above the timing chain cover for an engine code.
Thanks for correcting me, Mike. That is what I thought it was at first, but thought the CBJ could have been the end of the suffix code.

Ethan

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post #7 of 14 (permalink) Old Sep 29th, 10, 6:12 PM
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Re: Please help id this engine code

note the edit.
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post #8 of 14 (permalink) Old Sep 29th, 10, 6:49 PM Thread Starter
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Michael
 
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Re: Please help id this engine code

Here's pics of all I could find. In case they dont upload, please see below.

In front middle of block: T1218TRL

In Back:
GMT1
486839
D 8 82

Hard to read.
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post #9 of 14 (permalink) Old Sep 29th, 10, 9:08 PM
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Re: Please help id this engine code

Where'd you go Ethan?
TRL 81 454 Truck 210 LE-8 Manual 4-Brl C-20 & C-30, A.I.R.
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post #10 of 14 (permalink) Old Sep 29th, 10, 10:10 PM
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Ethan
 
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Re: Please help id this engine code

Quote:
Originally Posted by Mike View Post
Where'd you go Ethan?
TRL 81 454 Truck 210 LE-8 Manual 4-Brl C-20 & C-30, A.I.R.
Mike,
There were a lot of TRL's (small block & big block) and couldn't tell which one it was. Glad your here or I would be screwed. Your "THE MAN" when it comes to this stuff. I'm trying to learn though.

Ethan

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post #11 of 14 (permalink) Old Sep 29th, 10, 10:20 PM Thread Starter
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Michael
 
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Re: Please help id this engine code

Im new to this and I know this is the wrong section of the forums, but what is the potential of this engine? Is it worth keeping and adding performance upgrades, or would it be cheaper to just get a vortecpro CE?

Thanks for helping ID this thing.
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post #12 of 14 (permalink) Old Sep 29th, 10, 10:26 PM
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Re: Please help id this engine code

Yeah it's worth keeping.
Being from a C20/30 it's likely a 4 bolt block.
Let the shop open it up and see what/if it needs anything.
Raise the compression and add a cam and you up close to 500hp with the other usual components.
Carb,manifold,headers.etc.
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post #13 of 14 (permalink) Old Sep 29th, 10, 10:52 PM
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Ethan
 
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Re: Please help id this engine code

Quote:
Originally Posted by man44a View Post
Im new to this and I know this is the wrong section of the forums, but what is the potential of this engine? Is it worth keeping and adding performance upgrades, or would it be cheaper to just get a vortecpro CE?

Thanks for helping ID this thing.
I would keep it as well. Build up from it.

Ethan

1972 Chevelle
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post #14 of 14 (permalink) Old Sep 30th, 10, 6:39 AM
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Mike
 
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Re: Please help id this engine code

Quote:
C = Chevrolet
the C denotes the Chevrolet Truck Division, a 1 in this position would denote a Chevrolet car.

Note-Not all truck engines were 4-bolt main, only way to definitively know if to remove the pan. 1/2 and 3/4 ton trucks were not necessarily considered HD trucks so a 2 bolt was common in a lot in them.
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