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Hello
I have a new crate LS3 up on my stand and I'm checking fitment on a few things, on the drivers side of the block there is a mounting boss that comes into contact with my header tube, I could dent the header, but it's better to just grind about 1/4" off this "mystery boss". Can anybody confirm what this boss is meant for?
Also some of the OEM spark plug boots come into contact with my headers, so I was hoping for a recommendation on stock length wires that have a hi temp sleeved boot angled at about 45°.
MSD Super Conductor wires are great and you can bend into positions to get the wire away from the primaries. The 2500° wire heat shield sleeves for spark plug wires are way better than those aluminum heat shields from GM. I've used them in the past and found them to be a PITA to remove.
wires are great and you can bend into positions to get the wire away from the primaries. The 2500° wire heat shield sleeves for spark plug wires are way better than those aluminum heat shields from GM. I've used them in the past and found them to be a PITA to remove.
Yeah those GM ones are a PITA to remove and put on. I was looking at some with a ceramic boot but some reviews say they are brittle.
When I checked Summit for MSD Super Conductor the description doesn't mention a temp rating for them. Are these the ones your talking about? The spark plug boot on them is straight but you say they will hold a bend?
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Mocking up headers - need to grind block? 
