MSD 82458 Blaster Coils
I'm trying to find out what the center to center distance of the mounting holes on the blaster coils listed in the subject line is. Would anyone out there happen to know what that is?
There doesn't seem to be this measurement anywhere on the internet or in MSD's installation instructions.
Here on LS1tech, you'll find the search function will be your best friend. The MSD LS coils have been shown many times to not only offer no performance advantage, they often fail. They're not worth the money. Stay with newer stock GM LS2 style coils if you can.
Have a look at this thread result after searching for "82458":
https://ls1tech.com/forums/generatio...msd-coils.html
You have a 1998-2002 Firebird/Trans Am?
From page one of Holley's instructions for these covers:
"Fits LS1, LS2, LS3, LS6, and LS7 Engines Using Coils with Standard LS3 Bolt Spacing of 72mm"
Head down to a Pep Boys or Auto zone with one cover and ask for a ignition coil for a 2010 Corvette. They had the LS3 engine. Check to see if the coil bolt holes line up.
You'll have another problem. LS1/LS6 vehicles have one style coil plug. Everything else has a different coil plug. To use LS3 style coils on your LS1 Firebird, you'll need to replace both ignition coil harnesses.
Personally, I'd rather keep the stock valve covers. It's way easier to do things like spark plugs when all the entire coil packs lift off in one shot. I can't imagine doing the number 8 plug with the coils in place.
Good luck with the project!
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