225 Slant Six Manifold

my68barracuda said
That looks to be a rather common cast iron intake manifold. Those are about as durable as concrete. What makes you think there is an issue with the intake that you have on the car? Your first post mentioned that you thought it was cracked,,,and your mechanic repaired cracks in the intake,,, what exactly did the mechanic do? The cast iron intakes do not have a history of cracking. The cast iron exhaust manifolds have a cracking issue, but not the intakes.

I frankly don’t know much about the intake/exhaust manifolds. When I got it, as i understand it, there was a massive vacuum leak. After that was mostly fixed, my mechanic told me there was still a slight issue with it sealing, he mentioned he thought it might be an issue with the manifold itself. Amen with it’s stalling at lower Rpm’s (when idling in drive or reverse) I figured the issue might be the manifold.