[Lynn]

That is Elgin's version of the LT-1 camshaft. Exact same duration at .050 lift. To me, you are going to be hard pressed to find a better camshaft with those pop up pistons and stock 186 heads. Even if your heads are port matched, if they aren't hogged out, this cam flat out works. Eric Jackson (vintage muscle car parts) advise me to use this cam back in 2012 on my LT-1 even though that meant he wasn't making a sale.

Looks like slightly more lift, but then manufacturers sometimes play with those numbers.

Chev. recommended .024 and .030 valve lash, and Elgin recommends .020 and ,025, which would effectively increase lift. I would bet it it the old Federal Mogul grind, which was identical to the 178 camshaft from Chevrolet. John Z told me that FM made the over the counter version for GM. I have it in my engine and it screams pretty good. Barely any perceptible lump at idle. I don't go past 6500 because I don't need to with a 4.10 screw, next gear has plenty of torque. Stock Z/28 manifold and DZ carb and it gets rubber in all four gears, even with Competition Engineering traction bars and 255 60 tires out back.
Great street manners. Plenty of vac for power brakes. Don't know how you can go wrong. I do not have EDM lifters in that engine. But, I have NEVER, since 2012, had to adjust the lifters. I have checked them three times. All three times they were still on the money. I add one half bottle of GM EOS with each oil change.

Have a Fed Mogul cam in the box that will be going in the 70 LT-1 Corvette with EDM lifters to make sure we don't wipe a lobe. Will still use th GM EOS, which I use in everything that has a flat tappet and goes high RPM.