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Old 12-04-2012, 04:16 PM   #1
turbosvtfocus04
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Svt block and crank

What's the maximum horsepower the stock svt block and crank can handle before breaking?


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Old 12-04-2012, 06:01 PM   #2
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Depends on how much you want to build it. The rule of thumb with the SVT is anything over 300hp needs a proper bottom end built.

I have seen some zetecs over 600hp on the stock block that has been built for the power.
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Old 12-04-2012, 06:25 PM   #3
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I will be running CP pistons with Carrillo rods. The upgraded bullet main caps as well.
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Old 12-04-2012, 09:04 PM   #4
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There is never a maximum.
There are however situations where things like detonation can be more prevalent and cause damage if not accounted for or tuned correctly.

That said, the blocks and cranks have done north of 500 more than a handful of times.
Good tuning and you'll have no issues.
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Old 12-04-2012, 09:50 PM   #5
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Thanks guys. This winter I will be seeing how far I can push this motor till it breaks. And it will be higher than 500whp. As for tuning, I have that covered.
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Old 12-05-2012, 08:26 AM   #6
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The block is strong, I dont know if I've ever heard of any one cracking the block without the rods being the cause. I think 600whp has been done, if I'm not mistaken. Thats like 700 at the crank.

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Old 12-05-2012, 11:04 AM   #7
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depending on how far north youre going, o-rings may be in order for the head. Thats still uncharted territory.

Good Luck! Can't wait to see the numbers.

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Old 12-06-2012, 03:51 PM   #8
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Thanks. But if I go o-ring for the head. I can't daily drive the car. That's strictly only for racing. I like to drive it on the street too.
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Old 12-08-2012, 07:00 PM   #9
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What does o-ringing have to do with street or race? Use copper head gaskets annealed properly and hylomar around the water jackets.
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Old 12-08-2012, 08:22 PM   #10
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Quote:
Originally Posted by SuperStockAMX View Post
What does o-ringing have to do with street or race? Use copper head gaskets annealed properly and hylomar around the water jackets.

For copper o-ring as a head gasket, the machine shop will cut the block to allow for the copper o-ring to be insterded but when it's cold out copper will leak. Also it can work great or give you issues.
The head gasket that I'm using is a mls cometic head gasket.

As of right now the CP pistons and head gasket will take about a month to make. This is the busy time for both company's.
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