how much psi can the stock block handle - MustangForums.com



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Old 04-30-2012, 08:15 PM   #1
2006mustanggtowner
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Default how much psi can the stock block handle

i was just curious i have a 2006 mustang gt and i was wondering what the stock block can handle with a superchargerv for psi. thanks all info is much appreciated
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Old 04-30-2012, 08:20 PM   #2
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Supercharger? I think the general consensus is 10psi stock motor, but I also think it depends on what type of supercharger...
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Old 04-30-2012, 08:20 PM   #3
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PSI isnt something you have to watch out for as much as rwhp. In a general sense each PSI is about 10-15 hp. Either way most people say if you really "drive" your car and not like a grandma :P then stay at around 450 rwhp with a stock block. I have about 420 and hoping to get 450-460 soon. Not worried. Wont have to until the 500 rwhp marker then start replacing the rods, pistons, and the other infamous engine components that are weak stock. Again if you dont really drive your car hard you could get away with higher... but it isn't recommended.
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Old 04-30-2012, 08:37 PM   #4
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I have asked brenspeed this very question and they said 450 torque is the magic number but keep n mind people r running with a lot more and a good accurate tune is key
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Old 04-30-2012, 09:48 PM   #5
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Cylinder pressure and the associated pressures on the rods and crank are created by a slew of things. The most important thing to remember is pre-ignition knock pressures can be 100 times stronger more violent than normal combustion pressure. 5 seconds of knock is enough to trash a motor compared to hundreds of hours making 450rwhp.
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Old 04-30-2012, 10:12 PM   #6
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I've been running 500rwhp and 12 psi forever. Even launching on slicks and shifting at 6500 rpms hasn't hurt my stock block with 200ish passes at the drag strip.
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Old 05-01-2012, 01:27 AM   #7
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Quote:
Originally Posted by Diabolical! View Post
I've been running 500rwhp and 12 psi forever. Even launching on slicks and shifting at 6500 rpms hasn't hurt my stock block with 200ish passes at the drag strip.
however every time you mention it im sure you practicaly punch through your desk
<knock on wood>
lol
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Old 05-01-2012, 02:04 AM   #8
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Nah. I keep flogging the nag but she just won't die. If she ever does blow, I'm set to get a B302, but she doesn't even lose oil between changes.
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Old 05-01-2012, 02:41 AM   #9
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....are you magic? haha
wish i had the cash for a SC. but knowing my luck at 400 it would magically throw rods through the block and i would face palm
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Old 05-01-2012, 05:34 AM   #10
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It seems like at 500...

Dollars.

My wallet begins to drain haha

You must have one helluva good job for a college kid (if I got that right) to be looking at superchargers already. Might I recommend the Brenspeed 302 rotating assy. if you're really looking to get up in the numbers?

From what I've heard, it is WELL worth the money.

http://www.brenspeed.com/b302-ra2.html
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