I broke 3 rocker arms, and bent 4 push rods after about 100 miles on my new engine. The rocker arms were Proform Chrome Moly Roller tipped rockers, the push rods were stock. The company replaced all the rockers with full roller aluminum rockers. I checked travel on these, and all seems well. I know Proform doesn't have a big name in valve train parts, but I hope these will last. If they don't then I have learned, and will buy some from someone else. I took my son with me to get gas, and then a little trip down the road and the car ran really well. I messed with the timing, so I had a real bad hesitation when I opened the secondaries, and it was cold out, with no hood, or aircleaner, but the primaries alone would slide the car around. Now if I could just get some exhaust on, I would be doing good!!



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Joshua Johnston
1991 Z-28


350, T-5, K&N, Ported Vortec heads, Edelbrock RPM, Holley 750 D.P., HEI, 11.07:1 CR, Comp Cams Roller-.510"/.520"-282*/288* dur., Shorty Headers, Dual 2.5 Exhaust,Dynomax Bullet Mufflers, T&R Motorsports custom air intake