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Old 01-26-2010, 09:55 PM
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hecho in mexico

10066036 block i.d. what year is it and what can i get in horse power for a good simple budget. is it worth the hassle or just start with a better block. need info...... thanx

Last edited by cedillone; 01-26-2010 at 10:19 PM.
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Old 01-26-2010, 10:44 PM
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10066036 350 86-up 205HP Car/Truck 2 & 4-bolt Passenger stick 1-piece seal
Locating casting # Info>> http://www.mortec.com/location.htm
http://www.mortec.com/
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Old 01-26-2010, 11:15 PM
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There are only a couple of real concerns regarding the Hecho en Mexico blocks. They are made of a "softer" cast iron, and seem to wear faster in the cylinders. The other thing is, because of the "dual dip stick patterns", they use an entirely different oil pan, and that may be hard to find if you don't have one; also, the pan gaskets can be hard to find because of the oil pan. Butch/junior stocker.
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Old 01-26-2010, 11:52 PM
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mexican block

is it wise to build my hecho in mexico block ? i dont want to wast money or time making money to build....................... i need ineeeeeeeeeeed iiiiiiiiinnnnnnnnffffoooooooo!!!!!!!!!!!!!!!!!!!!
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Old 01-27-2010, 06:44 AM
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Quote:
is it wise to build my hecho in mexico block ? i dont want to wast money or time making money to build....................... i need ineeeeeeeeeeed iiiiiiiiinnnnnnnnffffoooooooo!!!!!!!!!!!!!!!!!!!!
Ayuh,... If you can't supply any iiiiiiiiinnnnnnnnffffoooooooo,....

Just how is Anybody supposed to be able to answer your question...
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Old 01-27-2010, 08:55 AM
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I have one with the same casting numbers. Mine is a 4 bolt. Some were rated at 260 and some HP versions at 290hp. GM just put a different cam in it. I have read a lot about them before I went with mine. They are limited by the dished pistons in them as they are only 8.25:1 to 8.5:1 compression. I read a write up, linked off the mortec page where they did a dyno test with that same casting number block, stock heads, Edelbrock performer intake, 600 cfm carb and headers. The results were 290hp. Can't comment on the lower quality materials in the casting process, have not heard anything about that.
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Old 01-27-2010, 10:15 AM
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is it just the block? or is it the whole motor? these motors are garbage IMHO, they may be okay for a stock replacement but not if you're looking for a performance motor, one person said before that the dished pistons limit these motors, that is wrong it's the smogger 76cc heads, that give it the 8.2:1 compression a set of vortecs would raise it to 9+:1 and add 50hp, but if i remember correctly the cam is an old corvette cam, added with a set of heads that weren't made for high performance at all. if you're just dealing with the block i would look for another one 350 blocks are a dime a dozen
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Old 01-27-2010, 12:25 PM
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the heads are really poor. mild cam and a new set of aftermarket 64cc heads will be your best bet.

will make 9.4:1 cr with 64cc heads.

those engines come with 12cc dished pistons
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Old 01-27-2010, 12:28 PM
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here is an 8 part chevy high performance build up on the Goodwrench engine.

http://chevyhighperformance.automoti...gmc/index.html


look closer at parts 1, 2, and 3.
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Old 01-27-2010, 12:42 PM
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Quote:
Originally Posted by cedillone
10066036 block i.d. what year is it and what can i get in horse power for a good simple budget. is it worth the hassle or just start with a better block. need info...... thanx




Get a copy of this book, in it is a 7 or 8 installment article on building Mr. Goodwrench from 200 horsepower as it arrives on your doorstep to over 400 dynoed ponies with nothing but carb, intake, camshaft and cylinder head changes.

Small-Block Chevy Engine Buildups: How to Build Horsepower for Maximum Street and Racing Performance
Chevy High Performance Magazine

This isn't to say that a better starting point with flat top or D dish pistons, better rods, etc. shouldn't be included to optimize performance, reliability, and longevity. But as a step by step process with what in many cases are moderate improvements the SBC once again proves why it's so popular with engine builders.

I prefer to start collecting pieces rather than with a Goodwrench/Targetmaster simply to avoid having to take a perfectly good motor apart and throwing half of it away, but the initial cost of one of these is attractive. You need to put pencil to paper and do several builds and estimates to see which way is the most cost effective.

Bogie
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