first gen Z28 cam specs

Hey guys, got a technical question for all you first gen tech heads out there. Ive been trying to research the specs on the cam used in the DZ302 engine back in the 60's. (also the cam used in some fuel injected 327's and the LT1 350, This is apparently the same cam that is known as the 30/30 cam) So far ive found three sets of partial info indicating three different cams. This is what i have so far.

Cam 1
Lift - .452/.455
Durration - 229/237
Overlap - 78*

Cam 2
Lift - .485/.485
Durration - 254/254
LSA - 114*

Cam 3
Lift - ?
Durration - 346/346
Overlap - 118*

I put these cams into desktop dyno with all other perameters set up for a DZ302 engine including the 4x3 dimentions, 462 heads, 2.02/1.60 valves, 800cfm carb, single plain intake, and stock manifolds and mufflers.

Cam 1 - made 208hp @ 5500rpm and 213lbs/ft @ 4500rpms, signifigantly less than it should be making, and at a lower rpm. I feel that the 78* of overlap is the cause of this, but thats what my info said.

Cam 2 - made 383hp @ 6500rpm and 331lbs/ft @ 5500rpm. certainly more along the lines of what people claim the engine actually made over the 290hp rating. Also the power is in the correct powerband.

Cam 3 - dosnt have enough info to test, but sounds like its based off of seat to seat numbers rather than .050in like the other two are.

I think Cam 2 is right, but im looking for conformation of all the information. As its set up right now in desktop dyno 2000 the cam has the following information...

Lift - .485/.485
Durration - 254/254
Overlap - 26*
LSA - 114*
IVO(BTDC) - 8*
IVC(ABDC) - 66*
EVO(BBDC) - 56*
EVC(ATDC) - 18*

I have it installed with 0* timing advance/retard which i know isnt right. But is what the engine seems to like best according to the program. any change in timing lowers power output. If anyone has any information to correct the numbers ive worked out, or knows the correct timing adjustment for a tuneup on one of these engines, please let me know. Im trying to make this as accurate as possible.

i can't seem to find anything, I tried looking for a stock replacement on summit to get it's specs, but I don't know what to look for to begin with, but maybe you can try that if you haven't already.

i know it probably dosent but would it say in the haynes manual for the car i would think it would at least give the proper timing for it but i dont even know if haynes goes that far back

1969 Camaro Z28 Cam factory installed 255 degrees deration @ .050 cam lift both intake and exhast. .485 gross valve lift, both intake and exhast, 114 degrees lobe center line. Optional dealer installed cam for 69 302ci Z28 engine is 257 intake 269 exhast duration @ .050 cam lift .493 intake .512 exhast lift gross 112 degrees lobe center line.

/edit: notice I changed the first gross valve lift, I made a typo

Just wondering if this helped, or if you needed more info

kinda helpful, but not exactly what i was looking for, where did you get your info on the 255 durration?