Captainkirk's Duster project

No word from Howards cams, Comp cams, or the shop regarding the heads teardown. Well, they say patience is a virtue.

Edit: Finally heard back from Kirk Peters at Howard's Cams after providing as many specs on the build as I could. Here are his recommendations:


I recommend cam # 711651-12 and lifter # 91712, the cam specs are;
218/226 duration @ .050
.502/.525 valve lift
112 lobe separation w/ 4° advance ground into the cam (the 112 LSA will increase the vacuum)
RPM Range 1800-5800

I asked a few follow up questions which he answered as follows:

1) How does this cam idle? Lumpy, I hope...Good Idle (a gearhead will know there’s a cam in the engine), the lumpier the idle, the less vacuum

2) This is flat tappet, I assume? Yes

3) What are overall duration degrees (not the @.050 which you already gave me) If you referring to “Advertised Duration”, it’s 265/273

4) Is this an off-the-shelf grind or custom? Shelf