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Author Topic:   350 mexican block
Dirt Newbie

Total posts: 4
posted October 20, 2002 09:08 AM
First thing is.This is THE BEST SITE!!!!Anyone built a 350 chevy 010 block that has made in Mexico on it. Good OR Bad.Same goes for the 442 crank that's in this block?

Dirt Forum Racer

Total posts: 89
posted October 20, 2002 10:27 AM
I may be wrong,but the Mexico block is the same block GM uses in some of their TargetMaster motors and Merc Cruiser uses in their boats.

Dirt Roller

Total posts: 20
posted October 20, 2002 08:36 PM
does any of the numbers on your block have a space between them?

Dirt Roller

Total posts: 20
posted October 20, 2002 08:40 PM
if so I built one once and the main caps broke and destroyed everything

rico 08
Dirt Freak

Total posts: 372
posted October 21, 2002 12:12 PM
henco in mexico! probably a targetmaster, made for replacement engines for trucks good blocks the crank is just a regular cast crank.

Dirt Freak

Total posts: 346
posted October 21, 2002 12:33 PM
The "hecho en mexico" blocks are OK (maybe slightly lighter than a stateside block even).

However, extra care should be taken inspecting/prepping these blocks. I think the castings are fine, but the original machine work is sometimes less than perfect.

Details like cam bearing hole alignment, distributor hole size (this one is a pain to fix up once the engine is assembled and in the car), and deck squareness are a must check item (personal experiences on more than one block).... and an align hone is a good idea as well.


Dirt Freak

Total posts: 408
posted October 21, 2002 12:56 PM
We made piles of junk more than once by using Mexico blocks. Our experience was with "core shift" when they were cast, and the lifter bores were not geometrically in the same place from one side to the other. Ruined a couple cams that way, too.

If you have your choice, I'd stay away from them, unless (like the above posts say) you go thru and check EVERYTHING and correct anything that is out of spec.

Not worth taking the chance, IMHO...


Dirt Maniac

Total posts: 135
posted October 21, 2002 07:15 PM
I would agree with KPLugnut on this one. Ford Mexican blocks...mucho bueno. GM Mexican blocks...Ay yi!

rico 08
Dirt Freak

Total posts: 372
posted October 22, 2002 04:39 PM
the mexicans must have been drinking tequila casting blocks and saying"stupid gringo's!"lol

Dirt Full Roller

Total posts: 55
posted October 24, 2002 11:09 AM
I'd stay away from that junk. I've seen
a few cracked blocks between cylinders.

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