A modern -097 Duntov cam.

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pdq67
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A modern -097 Duntov cam.

Post by pdq67 »

I would like to get a modern -097 Duntov cam.

The OEM -097 cam is a real hoot in a small engine so just want a modern eqiv. of it.

pdq67
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Re: A modern -097 Duntov cam.

Post by mag2555 »

What size small engine do you want to have a bigger hoot out of, as it matters in a huge way!

Any motor will respond better in a wider rpm range with better flowing heads , not so much in terms of bigger heads then just stuffing in a bigger Cam!
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Re: A modern -097 Duntov cam.

Post by F-BIRD'88 »

Comp Cams solid flat tappet "hi torque" cam
#12-220-5 CS270s-8 270-270 235-235 (.050") .330"-.330"
.495"-.495" (1.5rr) 108 LSA .018"-.018" hot
You must degree it in and set the cam advance
EG: 108LSA 104/112 in/ex CL
Can use high ratio rockers with correct springs
Eg 1.65/1.6
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Re: A modern -097 Duntov cam.

Post by F-BIRD'88 »

A few others same idea

Comp Cams Extreme solid flat tappet cams
#12-676-4 and #12-677-4 You can google these for specs.

All these cams will outperform the OEM 097 cam in your lil 325 cid sbc. These are all street solids.
Must use correct springs Must use a motor oil with zinc and a hair of moly in it for best cam- lifter life.
Again can play with rocker ratio for effect.
On all these you can play with the valve lash within reason for tuning effect
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Re: A modern -097 Duntov cam.

Post by BlitzA64 »

https://www.camcraftcams.com/ I believe he still grinds the original specs
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Re: A modern -097 Duntov cam.

Post by PackardV8 »

F-BIRD'88 wrote: Thu Jul 16, 2020 8:40 amAll these cams will outperform the OEM 097 cam in your lil 325 cid sbc.
Agree, but it would be difficult to find a cam sold today which wouldn't. The '50-'60s SBC valve springs and rocker arms and pressed-in studs were such junk that the ramps had to be long and slow and the lift low if the valvetrain were to survive.
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Re: A modern -097 Duntov cam.

Post by BigBro74 »

F-BIRD'88 wrote: Thu Jul 16, 2020 8:23 am Comp Cams solid flat tappet "hi torque" cam
#12-220-5 CS270s-8 270-270 235-235 (.050") .330"-.330"
.495"-.495" (1.5rr) 108 LSA .018"-.018" hot
You must degree it in and set the cam advance
EG: 108LSA 104/112 in/ex CL
Can use high ratio rockers with correct springs
Eg 1.65/1.6
I don’t disagree with f bird here- but on a 325” deal (and knowing PDQ s preferences..) I would be inclined to go to 110 on the lobe sep. put a 282s (12-223-4) in with a 1.6 intake rocker installed about 108ICL and call it fun.
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Re: A modern -097 Duntov cam.

Post by lefty o »

my opinion, small cubes, and you want to wind it up , and have a supercharger, and basically run an antique cam. it is not going to run how you imagine.
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Re: A modern -097 Duntov cam.

Post by RCJ »

I've run the cam f-bird recommends in a flat top 350 with double humps, 4speed ,373 gears.Liked it ran great. Wasn't the 097 ( We called it the 30-30 cam) ground on 114 c/l ? I remember it being a little smoother off idle, where as the comp cam was a little rough till about 2000rpm or so.
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Re: A modern -097 Duntov cam.

Post by PackardV8 »

RCJ wrote: Thu Jul 16, 2020 4:45 pm I've run the cam f-bird recommends in a flat top 350 with double humps, 4speed ,373 gears.Liked it ran great. Wasn't the 097 ( We called it the 30-30 cam) ground on 114 c/l ? I remember it being a little smoother off idle, where as the comp cam was a little rough till about 2000rpm or so.


Two very different cams. The 097 or "Duntov" was the first generation SBC hi-po solid lifter cam. The 30-30 was the second generation and pretty much full-race for the day.
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Re: A modern -097 Duntov cam.

Post by F-BIRD'88 »

the 30-30 chev cam is a lot different than the 097 cam.
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Re: A modern -097 Duntov cam.

Post by rebelyell »

BlitzA64 wrote: Thu Jul 16, 2020 10:58 am https://www.camcraftcams.com/ I believe he still grinds the original specs
good choice. won w/ Charles' cams in circletrack as have/do many others.
nice folks to work with too.
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Re: A modern -097 Duntov cam.

Post by Walter R. Malik »

That 097 profile ground onto an inline 6 cylinder Chevy, (230, 250 & 292), with their 1.75/1 rocker ratio works real well in quarter mile oval track 6 cylinder classes.
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Re: A modern -097 Duntov cam.

Post by Walter R. Malik »

RCJ wrote: Thu Jul 16, 2020 4:45 pm I've run the cam f-bird recommends in a flat top 350 with double humps, 4speed ,373 gears.Liked it ran great. Wasn't the 097 ( We called it the 30-30 cam) ground on 114 c/l ? I remember it being a little smoother off idle, where as the comp cam was a little rough till about 2000rpm or so.
The 097 and 346, (the 30-30), camshafts are totally different grinds ... Manley used to offer a cam they called "Thunderstick" which had 30-30 lobe profiles on 108 separation; ran very well in its day and didn't need much valve spring.
http://www.rmcompetition.com
Specialty engine building at its finest.
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Re: A modern -097 Duntov cam.

Post by bigmike »

A few cam companys make a close copys of the 097. A buddy has a nice 56 chevy, he got tired of the 30 30 cam in a 283 + 060 he rebuilt with 1.94 heads. He poped in the Howards American Muscle Mechanical Flat Tappet Camshaft copy of the 097 with the howards DL lifters. He really like the lower RPM pull of the 097 over the 30 30 copy in the 56.

117492-10 CL117492-10 287 287 227 229 .395 .400 110 108 .012 .018

CL117492-10DL4 2200-5800 Near duplicate of the Chev 290HP/283, 360HP/327, cam (GM #3736097
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