NOT a recommendation, just a tid bit for conversation here...
Bullet Racing Cams has a solid roller lobe with 230 degrees duration at .050" tappet lift and 0.2900" lobe lift. Using a 1.5 rocker ratio that's only 0.435" valve lift before lash. A 1.65 ratio for 0.4785". Lash at the lobe is 0.012"
The lobe is dwell nose. Dwell lobes are often used when there is a lift rule, such as NHRA stock classes. Dwell lobes are usually not well suited for higher RPM applications.
Also their foot not related to the tight lash comments...
Valve lash numbers are given at the lobe and have to be multiplied by the rocker ratio to give the valve lash at the valve. Lobe lash numbers of less than .012" are considered "tight lash" and tend to be more aggressive lobes.
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'70 TA / 505 cid / same engine but revised ( previous best 10.63 at 127.05 )
Old information here:
http://www.hotrod.com/articles/0712p...tiac-trans-am/
Sponsor of the world's fastest Pontiac powered Ford Fairmont (engine)
5.14 at 140 mph (1/8 mile) , true 10.5 tire, stock type suspension
https://www.youtube.com/watch?v=qDoJnIP3HgE
Last edited by Steve C.; 06-14-2021 at 05:40 PM.
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