Cam change?

“If it were me”, I probably wouldn’t go thru the effort of swapping in that particular cam if I was planning on using 1.6 rockers.

I could see the merit in trying it with 1.5’s(because he has it), but don’t have high confidence in the results with 1.6’s.

If I was buying a cam, I’d be more inclined to run about 10* less than that 290 cam, and a lobe design intended for higher rocker ratios, so the spring situation was easier to deal with.

Be interesting to know the lobes used on the current cam, along with what springs are being used, and at what installed height……….as well as the brand of rocker.

I measured a set of HS 1.6’s on some SR heads……..1.67 with checking springs………and still 1.63 with 700lbs open force.
It’s always a good idea to know what you’re working with.