426 Compression

Hey guys. I already looked for this topic. No Luck. Does anyone know what the compression should be on an 01 426? It has a Wiseco 12.5 to 1 pistion.

I just tested it and it has around 118 PSI.

Im assuming this is really low....

Best way to get a status of the motor is to do a leak down test. A compression test is quite subjective to things like auto-decomp or manual, engine cranking speed and number of revolutions.

what do i need to do a leak down test. i have a compressor and numerous other tools. do I need a leak down test gauge?

Yes, you do.

118 wow that realy low

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