Im looking at buying that cam (168741)in the next day and trying to find out if im going to have reversion problems.
They are the standard wet Lightning headers on a 9.5 to 1 gen 6 motor.

I read that you have to change your lifters. Did you have to change your roller lifters?

Thanks for your help in advance.

I ran the 731 with stock lifters no problem. I went with the morel lifters above that. I have a 731 cam available if you would rather keep stock lifters. It becomes a snowball quick! First a cam then lifters next it's roller rockers and then pushrods, ETC.......

I ordered the 741
It does not have to much more lift then the cam I had in there.
I really didn't want to have to buy lifters then probably pushrods to. Already put enough into the heads and others stuff.
I will see how the lifters look with the retainer bar with the new cam.

I think you will llike it, I ran it in some 540's and had no issues. That was with Gil exaust

I am running the 741 with Lightnings. But I have Jim V. Pro 1's for heads.
I run my Lightnings almost dry.
I don't have any reversion.

Did you have roller lifters and Did you change your lifters out from stock ones?

Do you have the lightning standard headers? I take it you just limted the flow to them then just dump the rest of the water out a water port? How hot do they get?

I had a 741 cam in my 540 with Lightning headers. They were not stock though. I dumped the the jacket water over using a restrictor valve and then using a pressure bypass valve I added raw water to the exhaust at higher engine speeds. It took a little tinkering to dial the system in, but after one false start it worked flawlessly. Running almost dry at idle the motor was pretty loud. I liked it but had many people commenting on the noise.... including 2 DNR stops and one ticket.