Hot boat magazine did an article on an olds a while back they like the Comp cams. i have used the comps cam 280/280 with a 490 lift worked pretty good. im now runnung a mondello/engle cam. but also running adjustable rockers. this cam is smaller in duration but more lift. but makes a whole lot more power. JM 22-25-10 cam.hope this helps. i have noticed some of the Summit raceing own brand of cams are real close to the Edelbrock performer cam. i have used the performer cam. nice street cam. not a good jet boat cam.