Review on 🔧 Exhaust Manifold Spreader for Small Block Chevrolet Engines by Lisle 13000 by Jason Cavett

I have four of these, I started using them because I had a good elbow that moved the bolt hole about 1/4 inch after I took it off. This brings me to an important point. I couldn't push the manifold back out once it was pinched. I learned my lesson and when I changed the engine on my truck I tightened them up before removing the headers to keep their shape. There is no problem with screw hole matching if they are reversed. They work very well.