Main girdle question for probe 331 pro street short block?

Rpm will blow a stock roller before power will.
A bad tune will blow any block.
My peers have successfully run 450 to 500hp to the ground without breaking the block.
I have heard/read more "average" builders break blocks at 300hp than not.
My suggestion; if you question whether your block will sustain the power and rpm... get a better block.
If you don't plan on going bigger than 347ci, the new Boss block appears to be a very good value. There's a really good thread over on ******* which addresses the Boss block by a very, very competent engine builder.

There are some members on this board and others which I believe can get you that block shipped for 1500.00.
I know for a fact Joel5.0 does it.

Then it would need how much in machining? Yea, not so great of a buy after all. When the time comes for me to buy a aftermarket block I will be seriously considering the world man o war. Do your research. Good luck with it sounds like it will be fun.

bentley429 said:

Then it would need how much in machining? Yea, not so great of a buy after all. When the time comes for me to buy a aftermarket block I will be seriously considering the world man o war. Do your research. Good luck with it sounds like it will be fun.

Click to expand...

What machining will you not have to accomplish on the World block?

The main reason I post this link... it has excellent facts on the Boss block. You will have to register in order to view it.
http://*******.com/index.php/topic,12225.0.html

As you can see, SN has "auto" censoring against one of the few good "tech" sites.
It's over on small_block_ford_tech, just do a search on the Boss Block, or PM me for the link.
Here's a short excerpt from the "Poster".

Bad95GTS


Topic #23 - Ford Racing's New Boss Block
« on: February 26, 2008, 06:47:06 am »

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I finished machining the Boss block yesterday and I am impressed.
Both decks were within .003 deck height of each other and both sides square deck too 8.207 deck height.
At 4.125 it is .300+ thick on the thrusts and the lifter bores are sized right out of the box.
I am impressed.

Looks wise the block is much nicer than a Dart as they are shipped appearance wise.
Needs way less deburring.

This block is a great choice and I really feel it will go toe too toe with a Dart block.