Compression readings for 67 300

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Aug 3, 2000 | 03:40 PM

TheFonz

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Compression readings for 67 300

Aug 7, 2000 | 06:39 PM

67beater

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Compression readings for 67 300

Fellas:
What is the normal range for compression on a 67 300 I6? I'm seeing the following:
Cyl1 100
Cyl2 120
Cyl3 120
Cyl4 110
Cyl5 110
Cyl6 110

Obviously, Cyl1 is a little lower, but is it too low? The thing still pulls like a champ, I'm just curious.

Thanks
stu...

Aug 7, 2000 | 10:59 PM

nitro94

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Compression readings for 67 300

I believe that if the higest and lowest readings are within 20% of each other compression is ok. IMO yours looks good.

Aug 8, 2000 | 06:34 AM

67beater

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Compression readings for 67 300

Thanks Nitro. I'm new (again, I had a 69 stang with a 302 10+years ago) to big American iron. Been spending most of my time with little Japanese motors. Having this much torque again is FUN!