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Help with Engine Number Please

B

beefcake83

1/2 ton status
Joined
Jun 24, 2000
Posts
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Location
Alaska
I'm hoping that someone out there can help me 'decode' my engine block number. The original 305 was taken out and a 350 installed shortly before my buying it, and I'm trying to find out exactly how old it is. It has the Goodwrench 350 valve covers. I used silly puddy to figure out my block number... 10066038. There's a big 'GM' and something 'en mexico' above the number. Any help would be appreciated. Thanks in advance. -

Gary Graham
'83 GMC Jimmy 350 'Beefcake'
Eielson AFB, Alaska
Metallica & Mountain Dew
http://community.webshots.com/user/beefcake83
 
hey there.
10066038...350.....94....4...Goodwrench crate motor, 2-piece rear seal, "Hecho en Mexico"
I got that info from here.<a target="_blank" href=http://www.mortec.com/castnum.htm>http://www.mortec.com/castnum.htm</a>

<font color=green> Too bad ignorance isn't painful </font color=green>
 
Beefcake, where exactly did you look to find the number i have not been able to find mine.
 
On my 350, it's located at the driver's side rear of the block where the engine and tranny bellhousing meet. It's almost impossible to see from above, but if you lay under your rig and reach up where I described, you'll be able to feel them. I tried mirrors, and flashlights, but ended up using Silly Puddy to read them. I first wiped the area with a rag, and then pressed the stuff on them. It took a few times to get all of the numbers logged down, but worked great. If you go to the site that POWERMAD sent me on this post, it will help you out too. If you still have trouble, let me know. - G

Gary Graham
'83 GMC Jimmy 350 'Beefcake'
Eielson AFB, Alaska
Metallica & Mountain Dew
http://community.webshots.com/user/beefcake83
 
Thanks, i was looking at the mortec site before, but just haven't gotten to look for them, i have silly poutty in hand and am goin to see now.
 
That site is a good one
That's how I found that the plant in mine is a 305.


<font color=green> Too bad ignorance isn't painful </font color=green>
 
Well i got mine and this is what mortec said 10066036...350...........2 or 4...Target Master/Goodwrench crate motor, 2-piece rear
seal, "Hecho en Mexico"

So what is the Target Master??
 
That is just another name for a crate engine.

<font color=green> Too bad ignorance isn't painful </font color=green>
 
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