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Hey I just want to here your thoughts on a mexican block compared to stock 87-93 standard block.I hear they have higher nickel content im not 100% sure about that tho and are beefier as in more metal in area's that the regular block doesn't have thats a fact because I saw a side by side comparison of the two.Also would you be able to use the stock crank,rods,and pistons from the standard h.o. block in the mexican block? So let me hear your opinions.
 

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There's a guy out here has been runnin a mexican block on a 306 with a novi 2000 and a wet nozzle street races it alot and hasnt broke it yet
If it's making power, it's running on borrowed time!!!!!
 

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Had a friend with one and he kept wearing out the rings in it....He said it was because the block having more nickel in it...If you run a stock block make sure you find one from 1970 to about 1978...A 302 block is good up to 500 hp & 351 block good to 600 hp tops...And thats with concrete & a girdle...anything else your flirting with rods in the pavement....:smt071
 

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They are slightly stronger..... But in the end a good aftermarket block is a better investment.

And girdles aren't worth a shit. All they do is keep the pieces in a nice little pile. The blocks still break exactly the same way.
 

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I had a 408 with 650 hp put 200 passes on it pulled motor down & the block looked great, it was a 1974 model..A friend built the same motor with a late model 5.0 block & split the block in 30 passes...Thats the differance......But R block or dart is the way to go for big HP.:rolleyes:
 
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