[Will]

Originally Posted by shermanator2

It is a PONTIAC lifter!!!

The Sealed Power HT-2148 is a Pontiac lifter first and foremost. I looked at the application list on Sealed Power's web site and the earliest application that I can find is for the 1984 Pontiac built Iron Duke 2.5L 4 cylinder used in Fieros and other GM cars as the standard 4 cylinder. It was used in 4.3L V-6 starting in 85 and various other V-6s in later years up until 2009. It was used in SBCs (not all, some use flat until 95) from 87 until their demise. It was used in various LS motors in cars, including the 7.0L until 2013, but apparently not later. The last application I found was in 6.0L truck engines in 2018.

Let's stop talking about LS7 lifters. If we want to call it something other than the HT-2148, let's call it the Iron Duke lifter.

Well that's very interesting. The old '80s Iron Dukes had roller cams? Who would've guessed that?

Whatever we call it, I agree this needs to stop being called "LS7" anything. They are not LS7 lifters and LS7 lifters will not work. Using "LS7" in the name for this swap creates unnecessary confusion and I guarantee someone is going to try to use actual LS7 lifters and have a catastrophic failure.