1.4 to 1 rockers and a Stock cam question

[ach60]

I was reading what turned out to be a old thread, and I saw a post I have some questions on about using 1.4 to 1 rockers with a stock cam:

[bugguy1967]

No, it will definitely not. The total lift is under .400". Use just a single high rev spring. If you want a harder camshaft, use Engle's new stock cam.

The max normal compression on a stock cam with dual 2-barrel carbs should be no more than about 8.3:1 on 91 octane. Add 1.4 rockers, and the duration at .050" increases a bit. It should allow for 8.6:1 on 91 octane.

[andk5591]

If you are concerned, use the 1.25 rockers. Contrary to some comments, I have found a substantial performance improvement when used in conjunction with improved carburation and exhaust. Has been part of my standard mild 1600 upgrade for several years.
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[mikaelh]

1:4 rockers works fine with stock cam,even berg suggest it on his website.
i use it to on an engine i build now.

[Alstrup]

Just remember to correct the CR as it will result in some bleed off of dcr. 8,3 is good for medium fuel.
T

[Multi69s]