need more info is it a daily driver ?
Power adder ? do you know how to set valve lash ?
I was going through a similiar problem was told my hd lifters were limiting RPM but over all its really a small diffrence at the track and i dont feel comfortable adjusting the lash all the time as with a solid roller.
the best bet is whats right for you is it a strip only car then solid if street and time isnt there for maintenece all the time then hydralic
or ive never looked into it but have heard of people modifying there hdy roller to work kinda like a solid someone else might have a link to the site.
10 seconds takes more than motor though you need the whole car cage suspention ect.
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89 with 331 t3'/t4 hybrids. upr Suspention worked out finnaly . 9.89 144 mph .
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