Technical REAL Duntov 30-30 cam specs?

[BOOB]

I've read the handful of threads about this cam and it seams that every manufacturer has different specs. I guess it REALLY doesnt matter but does anyone know of a current supplier with the correct specs on their grind? I've heard stories of how kick ass they sounded and for the application it would make me feel better knowing I have the correct grind.




Also, were gear drives common back in they day? I think it would be a cool combo with the solid lifters.

[cooljunk]

Stolen from cyberspace.

For the Comp hydraulic 30-30 :
advertised duration: 286 intake/293 exhaust,
duration @ .050 : 239 /246 ,
lift : .483" /.477" ,
lobe center: 112 degrees.


For the Comp cams solid lifter reproduction Duntov 30-30, P/N 12-673-4, specs are:

advertised duration: 284 intake/291 exhaust,
duration @ .050 : 247 /254 ,
lift : .504" / .498",
lash: .012"
lobe center: 112 degrees

[BOOB]

See...

[61falcon]

my father in law put a 30 30 cam in his 32 sedan, it had a real mean idle to it. he had a hard time finding someone that even heard of a 30 30 cam. but after all the work to find it and install it. he removed it because it killed his fuel mileage.

[Bullrack]

61falcon, tell him to send it to me. I don't need no stinking fuel mileage! Steven.

[skunx1964]

i was wondering this the other day. it seems to vary as much as the DZ302 cam specs.......

[spinout]

Can't you still get them at your GM dealer?

[59Apache4J]

Clay Smith still custom grinds.

[59Apache4J]

http://claysmithcams.com/

[wfo guy]

That cam was so famous and now it has become a mystery. I had one in a 38 chevy with a 301. I'll do some research and see if I have something old enough to be genuine chevy in specs.

[propwash]

I've run a couple of those. We actually used to set the last at .028/.028 - gave just a little bit better lift, and with Chevron Supreme (white pump/106 octane) at 30 cents a gallon....we didn't need no stinkin mileage.

You can put together a 301, pair of 2.02 doublehump heads, use the 30/30 cam and a genuine GM Z28 Intake with a good Holley and that will be one of the best little street engines around, with some serious sounds burbling out of the pipes.

dj

[propwash]

Correction - I obviously meant LASH at 0.028 not last.

[Bullrack]

Spot-on propwash. It was "the" cam to have and seems like everyone has taken advantage of the mystery as of late. Steven.

[M.Edell]

Originally Posted by propwash

I've run a couple of those. We actually used to set the last at .028/.028 - gave just a little bit better lift, and with Chevron Supreme (white pump/106 octane) at 30 cents a gallon....we didn't need no stinkin mileage.

You can put together a 301, pair of 2.02 doublehump heads, use the 30/30 cam and a genuine GM Z28 Intake with a good Holley and that will be one of the best little street engines around, with some serious sounds burbling out of the pipes.

dj

I ran that set up in a 57 Chevy, except my intake was an old TM1 Edelbrock..What a great little engine..

[yekoms]

Speed Pro's C113R is the small fuel injected 283 "Duntov" and the specs are the same as Chevy's "097 Duntov"
They have the 30-30 but I don't have the specs here at home I have the info at work.
The 30-30 is the name the cam got 'cause of the .030" lash. Modern cam grind profiles got away from the big lash.
The Comp Cams cam is a good one.
I'm not a fan of small block Chevies with gear drives unless you are buildin' a sprint car.
Smokey

[k9racer]

several years ago I bought 4 of the millings packaged cams. Part number C10P. The rep from mellings said they ground this cam for GM and shiped it to them in GM boxes.. I am running one of these cams in my sportsman circle track car. Pull great. no body belives I run this small of a cam. If any one cares the 097 cam is millings C8P part no. I have set these on 8 and 18 and some times 12 and 18..THe solid lifter no is J992 and the edge orfice unit that replaced the J992 is JX 992.. I have used these 2 cams for around 40 years.. Bobby.......

[BOOB]

Originally Posted by propwash

I've run a couple of those. We actually used to set the last at .028/.028 - gave just a little bit better lift, and with Chevron Supreme (white pump/106 octane) at 30 cents a gallon....we didn't need no stinkin mileage.

You can put together a 301, pair of 2.02 doublehump heads, use the 30/30 cam and a genuine GM Z28 Intake with a good Holley and that will be one of the best little street engines around, with some serious sounds burbling out of the pipes.

dj

It's a properly balanced 327 with 10:1 forged, 2.02 humps, an old single plane Edelbrock and an AFB. Going in my '55. All the veterans at my local hangout suggested it right away.

"OHHHHHH MAAAAAN....... I TELL YOU WHAT! THAT CAM WAS OUTTA SIGHT!!! THAT'S THE MEANEST IDLE EVER AND THAT 327 WILL SPIN TO THE MOOOOOON!!! THAT THING'L RATTLE LIKE HELL BUT IT'S COOOOL!!!!

(so who sells 'em anymore... anybody got an old cam card?)

"aww hell, I dunno. I got one somewhere."

[re-animator]

I just looked in an old "how to hot rod your small chevy" book, originally printed in 1972. It lists the "Duntov" cam as #3736097. Intake 317 deg./ .382" , Exhaust 288 deg./ .386".

It shows a different cam for the 30-30 cam, #3849346. 313 deg./ .447" lift, in single pattern.

I liked the Crane Hydraulic L-79 cam. It had the 270-ish duration and the .447 lift. It was in thier blueprint series, and sounded BAD ASS ina 283 with glasspacks.

good luck!

[NONAME]

just remember a hot 283 cam is fairly mild in a 327

[M.Edell]

Originally Posted by NONAME

just remember a hot 283 cam is fairly mild in a 327

So true...