Hi I am getting a Gen VI 540 with Merlin Grumpy Jenkins heads and have a Hydraulic Roller cam that has these specs.

cam timming @50
duration 236 intake
duration 244 exhaust
lobe seperation 112
lift intake 610
lift exhaust 632

I have Imco Super flow wet exhaust. Will I have an issue with this set up.

Thank you in advance.

I would say probably not, but there are no guarantees. That is a Crane 741 cam. Plenty of people use that cam on 502-540ci engines. The Imco exhaust will most likely be the determining factor.

What HP will that cam make?

If you have the A Pipe you would be safer than the shorty riser Imco makes. I have a friend who has the Imco setup with the A Pipes with a HR cam with 240/248 duration @50 on a 540 with ported steel heads, with no probelms. His idle is set at 850 to 900......

It all depends on the heads, carb and intake. It could make 650 HP with a Pro Series Ported Aluminum Head.

580 with that cylinder head.

I am with Griff...

I have the A pipe not the shorty, so I should be safe with that then. I will run the motor for a while and remove the manifolds and inspect before I go out and blow an engine.
Thank you all