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Number 2 is for sure carboned up. I think the next step is a reputable head shop here in town. This is out of my league. Lol.

....thanks bud. 😂

Cylinder 8.

I’ll have to a) learn how to check them. And B) check them.

As a matter of fact... they have recently been done.

Timing chain was solid. Motor didn’t seem to get hot. I’ll get some pictures of the damage I found posted tomorrow. Thanks for the quick reply.

Hi all, I’m new here, and have come to confess. I ran my 403 out of oil. I heard a slight ticking, failed to check it in time, and it began running really rough. Got it home, got some oil in it, and that tick turned into a KNOCK. I fired it up one more time to move it to where I was pulling...

Oldspower, forgive me, but I am a Buick man at heart. I love my Riviera. But, Buick entrusted your people in 1977, as my power plant is the 403. My name is Austin; I am from Little Rock and I’ve torn into this motor more times than I care to admit. 😅