I was running W-2 style 1.5 T&D roller rockers with Indy 360-1 heads, 280lb seat pressure. 686 lift. The push rod angle with the offset rockers was really bad. This was street driven and raced for 8 years. The only wear was push rods , and top rings. shift light set a 8000. It made 829 @ 7900 @ the crank
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Same engine, We are now going to tall large diameter offset solid roller lifters to straighten the push rods a bit. 7245 conical springs, Titanium retainers and locks. 200lb seat pressure. Valve lift is still 686 . new smith brothers pushrods. Aluminum GRP connecting rods. Ross 13.5 pistons. super light weight knife edged crank.