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how much boost can you put on a stock 97 4v longblock, without blowing it up? thanks tyler
 

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I don't believe there is a proven "psi" that causes engine failure. I lost my engine at 10psi but I know why (lack of fuel and fuel pressure). Some have run 10-12-16 and even more psi on the stock engine for years. Brian Bradford is running so much boost it's amazing and his engine has held together for years with multiple 1/4 blast and multiple dyno-runs/tunes.

I would say a lot depends on the skill of the tuner and the correct parts selection for fuel, etc.. as well as the actual quality/condition of the stock engine. Some engines just seem to come out of the factory put together better than others....

Tom Crews
 
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