I’ve researched a bunch and when replacing the cam it seems most people end up sticking with the stock camshaft. There seems to be confusion on drop in replacement vs spring upgrades or other modification along with uncertainty of a smooth idle. What’s the latest verdict, is it worth the extra cost and possible valve train wear for the HP gain? Only looking at mild low-end Kent or Crower. It’s going in a refreshed top-hatted, 3.780”oversized bore block I have sitting on the engine stand for a couple of years.

 

my '04 with 31" tires, a 2" lift and a steel front bumper has the Crower Level 2-N.

it is a lot of fun to drive. definitely has more power than before and MPG is the same. if that Camshaft was put in a stock truck you might see both more power and better MPGs.

 

Helpful, thanks. just dropped in the cam/new lifters or upgraded the valvetrain too?

 

just the cam and lifters.

 

My Turner engine came with the Kent Sports cam. Definitely feels like there is more horsepower. Turner's website claims an additional 22-hp. Idle is not as smooth as the factory cam, but not a concern.

https://www.turnerengineering.co.uk/...ms-c2x20634399

 

I couldn't agree more with these other guys. My personal feeling is that any time you're replacing parts and are presented with an opportunity to make a reasonable upgrade, it's foolish to go with stock parts. A cam (and lifters of course) makes a lot of sense. In my other life, a decent cam will set you back $4-$500, and then you need motorsport springs to counter the new lift so the valves don't float, and also new rockers of course, so you're at $1k all in. Just for hardware. At that point, may as well have the head ported for another $400, maybe bigger valves and a sport grind. After gaskets and fluids you're closing in on $2k for a decent street head. And that's in the single cam engines. $250 to walk away with a sport cam in your Rover 4.6 seems like a no-brainer to me.

 

Ditto, I also have a Turner 4.6 that came with the Kent cam in it. Don't have a before and after though, I bought my D2 with a blown engine.

 

Any US suppliers you can suggest?

 

Wow, me too!