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Old 03-14-2012, 12:47 PM   #2
mrein3
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Join Date: Feb 2000
Location: Center City, MN, USA
Posts: 3,254
Re: 350sbc pops and spits under load

Quote:
Originally Posted by JointTech View Post
...snip
But it purrs like a kitten when its not popping and spitting.

thoughts?
The last time I had this happen I had two valve seats that were gone. The time before that I had a flat lobe on the camshaft.

Do your general tune-up like you are planning. If it is still popping and spitting after that a compression test will tell you if a valve seat went bye-bye.
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'71 Malibu convertible
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