Bewy said

Hysteric,
Yes, quite valid to just compare LSAs. Your example just adds to the number of tests that I have seen that tighter LSA is better, & my comment was for this build.
However, as a general comment on NA engines built by the average hot rodder, tighter is better & is born out by numerous tests. [ tighter being 104-110 LSA]. There are engines where wider is better, & if you actually bothered to read Vizard's stuff, he quotes instances/engines that require wider LSAs. He states this: '..all out race engine with 582 ci & a 15.5:1 CR. The CR is four ratios higher than the 11.5 base number, so you need to spread the LCA by 8 degrees'. And...'LCAs from 112 to 116 were tested in 1 degree increments.'
Even the cam grinders are getting the message.....
My 1984 Crane catalog has 13 HFT cams listed for the SB Chev; only 2 are 110 or tighter. My 2010 catalog has 47 HFT cams listed. 27 are 110 LSA or tighter; & the tightest, which is 104 LSA, also has the shortest duration 184 @ 050. Hmmmm.
I never take much notice of Jones...
And by the bay it is Brookshire, not Berkshire.....
Finally, I would like a dollar for every hot cam installed & the new owner heralding the success...'Runs great'. 'More power than ever'. And the list goes on.... But never compared to anything else in an objective comparison.

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Pretend the story was written by someone you've never heard of.
How does it match what you've seen in the real world.

I've done many dyno tests were we change nothing but LSA, and then move each cam around to where it runs the best. I've come to different conclusions then David.

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My opinion is that you should buy whatever Dave Vizard recommends, because you probably deserve it.......
Tell your cam man what LSA you want, and he will grind it for you.
This way, your car will run its' fastest.
However, I recommend everywhere from 107 to 118, just depending.

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