Edelbrock CH4B

[Daves69]

This manifold came off a '74 440 Trailduster, not sure how old, and had been repaired previously. Engine ran OK prior to part out. Some evidence of backfire. Flanges are within .003" feeler gauge. My cheap bore scope don't show an obvious breach in the runners.
What do ya' think? Fill it full of great stuff, foil, and JB and call it "blocked" or just use it as the lower end of an anchor line? .............

 

[TrailBeast]

My thought on that was always ( If it did it before it's going to do it more.)

That's pretty nasty around that port.

 

[Daves69]

My thought on that was always ( If it did it before it's going to do it more.)

That's pretty nasty around that port.

Yeah, that cracking next to the welds already there. I wonder if this thing was getting overheated all the time.

 

[krazykuda]

Once the interstitial defect starts, it will always be a weak point.

I wouldn't trust it....

 

[66fs]

At this point I'd weld the crossover shut at the head flange and run it. Money will be the deciding factor for you.