Common Procomp crosswind intake manifold problem.

I've used 11 of them so far doing Magnum swaps & haven't had the first problem

I don't use much LA stuff anymore though as it is outdated & ineffecient
The only LA in the drive wears Magnum heads
Guess they fit the Magnum better than the LA. But as you can see this manifold is on LA,s, not Magnums.