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Author Topic: 3030 duntov camshaft  (Read 20121 times)
69er
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« on: April 08, 2007, 04:05:13 PM »

Jerry,

I noted an original 1969 z28 3030 camshaft sell on ebay without the lifters for several hundred dollars.
I also found that GM performance parts sell the 3030 camshaft manufactured through crane camshafts.
They list the cam as having the same specification with the addition of being blueprinted. The cam
comes in a kit with the solid lifters. Is this a good replacement for a worn original camshaft or should the
restorer try to buy an original camsaft?

69er
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Gambitt
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« Reply #1 on: April 08, 2007, 05:55:15 PM »

In my opinion it should be better than the original.
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Jerry@CHP
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« Reply #2 on: April 08, 2007, 06:03:10 PM »

Yes, the new blue printed cams are much better.  We did have two of the Crane cams wipe on us about six years ago.  Must have been a bad batch of cores or the parkerizing was bad.  We've been using the Comp Cams version of the 30-30 now.  Haven't had one fail during break in since.  Make sure you use a bottle of EOS with your engine break in.  Very important.

Good luck, 

Jerry
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sam
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« Reply #3 on: April 08, 2007, 09:40:40 PM »

Jerry, Have you seen better performance in the Comp Cams then you did in the Crane version of the 30/30 or about the same?  Thanks!
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1968RallySport
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« Reply #4 on: April 08, 2007, 10:47:34 PM »

Jerry is right about using the EOS. I'm using the crane version. The first one I didn't use EOS & the cam went flat right away. BTW the crane version seems to make lots of power Smiley

Daryl
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Gambitt
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« Reply #5 on: April 09, 2007, 09:28:26 AM »

Anybody have a part number for that 30/30 Comp Cam?
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69er
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« Reply #6 on: April 09, 2007, 03:27:11 PM »

I'm not sure if it's a comp camshaft or crane camshaft. But, it's sold through GM performance parts.

Here are the part numbes.
12364052 blueprinted replacement for factory part number 3849346 (mechanical camshaft)
12364054 blueprinted replacement for factory part number 3972182 (mechanical camshaft)

So, Jerry would this camshaft be acceptable for a restoration of a 1969 z28?

69er

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Gambitt
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« Reply #7 on: April 09, 2007, 06:28:27 PM »

I'm pretty sure those are Crane cam numbers. 
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JohnZ
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« Reply #8 on: April 10, 2007, 09:50:27 AM »

I'm pretty sure those are Crane cam numbers. 

Those are GM part numbers for the Crane-manufactured blueprint versions of the "30-30" and LT-1 cams (they're "kits" - cam and lifters). The Crane number for the "30-30" cam only is 967251, and for the LT-1 cam only it's 969551.
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'69 Z/28
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Gambitt
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« Reply #9 on: April 10, 2007, 04:27:06 PM »

I looked through all the comp cams and I am not sure which one is comparable to the 30/30.
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Flowjoe
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« Reply #10 on: April 10, 2007, 05:07:38 PM »

I looked at Comp cams when getting a cam for my '70 LT-1 (ended up with the Crane manufactured GM kit...thanks JohnZ)

the following is from the comp cams  online catalog:
NOSTALGIA PLUSTM    Hydraulic Flat Tappet Camshafts

HYDRAULIC-Sound of GM 300 hp camshaft with improved power and response.    Hyd. Hyd. 1000 to 5500 12-670-4 N+300HP 258 265 211 218 .426 .420 112o

HYDRAULIC-Sound and character of the ever popular GM L79 cam with modern power.  Hyd. Hyd. 1800 to 6200 12-671-4 N+L79H 276 283 229 236 .468 .462 112o
 
HYDRAULIC-Exhaust note of GM 30-30 cam with increased performance.  Hyd. Hyd. 2300 to 6500 12-672-4 N+30-30H 286 293 239 246 .483 .477 112o
 
FACTORY MUSCLETM Hydraulic Flat Tappet Camshafts (Today’s OEM Versions Of Yesterday’s Muscle Car Cams)

HYDRAULIC-Factory I.D.# 3896929 for,   Hyd. Hyd. 600 to 4800 12-105-3 929H 319 320 195 202 .390 .410 112°
327 c.i.,1965-68,factory 275/300 hp
350 c.i.,1967-69,factory 295 hp
350 c.i.,1970,factory 300 hp
350 c.i.,1971,factory 270 hp
350 c.i.,1972,factory 200 hp


HYDRAULIC-Factory I.D.# 3863151 for,   Hyd. Hyd. 1800 to 5800 12-106-3 151H 342 342 222 222 .447 .447 114o
327 c.i.,1965-68,Factory 350 hp
327 c.i.,1967-68,Factory 325 hp

NOSTALGIA PLUSTM    Mechanical Flat Tappet Camshaft

SOLID-Outstanding power & modern tight    .012.0122300 to 6900 12-673-4 N+30-30S 284 291 247 254 .504 .498 112°
lash with the exhaust note of the
GM 30-30 cam

FACTORY MUSCLETM Mechanical Flat Tappet Camshaft (Today’s OEM Versions Of Yesterday’s Muscle Car Cams)

SOLID-Factory I.D.# 3849346,for,         .024.0242800 to 6800 12-107-3 346S 346 346 254 254 .485 .485 114°
302 c.i.,1967-69 Z28,factory 290 hp
327 c.i.,1964-65,factory 365/275 hp
350 c.i.,1970-71 LT1,factory 370 hp



I never found a direct cross over for the LT-1 cam.   Crane was the only manufacturer that I found with specs that, on paper, look like original GM specs. 

FWIW, I've had a  crane blue print "140" cam in my '69 Z since I rebuilt the engine in '85.  Still runs great (knock on wood).




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Gambitt
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« Reply #11 on: April 10, 2007, 06:24:32 PM »

Looks like I might just go with the Crane then...everyone seems to like it.  Thanks.
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Jerry@CHP
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« Reply #12 on: April 11, 2007, 09:31:27 PM »

I'll get you the cam card for the Comp Cam version.

JM
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Gambitt
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« Reply #13 on: April 13, 2007, 07:08:21 AM »

Thanks!
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69er
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« Reply #14 on: April 14, 2007, 02:37:25 PM »

Why would someone pay up to $500.00 for what is being represented as an original
factory 3030 camshaft when they could by a replacement that is better and cost
under $200.00 with the lifters?

69er
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