I have an Isky roller set up and am probably not going to run it. Couple of reasons. First is reliablity. My brother ran an Isky roller on the street 30 years ago. The profile on that cam is pretty wild. Heavy valve springs are required. You do need the rev kit that goes with the cam. You will also need to upgrade you rocker arm assembly. The orininal Isky roller cam used rockers that had a 1.5 to 1 ratio. FE and stock MEL are 1.73 to 1. The steel shafts that the rockers ride on must be upgraded as well. My brother broke both stock shafts within a month. Upgraded shafts are much cheaper now, but still necessary with a roller cam. And you have to adjust the valves, as the Isky roller is a solid lifter cam. We tried some crane FE hydralic roller lifters a few years ago but the engine wouldn't run past 4800 rpm. We suspected the lifters couldn't keep up. The solids ran strong past 6500 rpm.
Second is engine vacuum. With the Isky roller there isn't much. I would have to run a vacuum reservoir to have power brakes. I suspect the same would apply to your vehicle. Brakes shouldn't be ignored.
Last is cam walk. The timing chain and distributor gear keep the cam from moving forward inthe block when running. As you may have noted in this forum, the is a guy who raced these engines and used a cam button to prevent the cam from moving forward. We just noiticed some timing changes, probably due to timing chain stretch or distributor gear wear.
Just some food for thought. TJR
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