3030 duntov camshaft

[68Zproject]

That's the lure of Ebay. "Original", "NOS","rare", "Z28, Yenko, Baldwin" etc.  A guy was selling an 021 flywheel and said "super rare part".

[Gambitt]

I'm still looking for that Comp Cam part# if anyone has it.

[olympic69]

I'm still looking for that Comp Cam part# if anyone has it.

12-107-3 or 346S ( same cam),
Note that they also have a modernized version, 12-673-4 or N+ 30-30s , which I am considering, and I think at least one here is running. This is on P 146 of the cat.

Rob

[Gambitt]

What the difference in the modernized version?  Thanks!

[olympic69]

What the difference in the modernized version?  Thanks!

It is on a 112 deg LSA vs 114 for the Fact Cam. Also has a little more lift, and an asymetrical lift and timing profile- which hopefully would indicate that they took the old Z28 Cam and improved upon its engineering, which is what DeskTop Dyno shows. I think it is Neal B who is running this cam- perhaps he or others can chime in. CC's description states " outstading power & and modern tight lash with the exhaust note of the GM 30-30 cam." I cant imagine that some improvements in valve event timing could not have been made over the years, without compromising ( but rather inhancing) the performance of a naturally cool 302. And, for the record, many have said they (CC) recommend the 282S grind for a quality replacement of the OEM 30-30. 

[68Zproject]

I'm looking for something for my engine which doesn't have a cam in it yet.  All stock 302 parts.  Anyone (maybe Jerry) have an opinion over all these cams described above?  Does any one stand out or is it just personal preference.  And what would be the difference performance-wise in these last three? (346s, 346s modern, and 282s)

[Gambitt]

You've talked me into the modernized version of the 30-30 cam...I see Summit will have some in May...I think I will order one.  Thanks!

[olympic69]

If you do a search over at Camaros.net, and here, this has been much discussed! What I will offer is my observations from having studied this a little over the years...if you do run the factort Z cam, follow the lash instructions developed by members here and published as a Tech report. Get your distributor set up by Jerry MacNeish to run with your 302- I have done this and also sent him my 4053 Carb for overhaul. Do a search here and at Camaros.net for "302", and look for building and tune up hints- there are a good many. Finally, the 282S Comp Cam would lower the peak HP RPM, and perhaps change the character of the 302 by making it less "irritable", which is something I am not necessarily wanting to do! It has been '84 since my car was running, so all I can do is recall others experiences.

The threads and associated discussions with pdq67 are priceless- he IS the small motor advocate- you can search his Sig for topics.

Good luck-   

I'm looking for something for my engine which doesn't have a cam in it yet.  All stock 302 parts.  Anyone (maybe Jerry) have an opinion over all these cams described above?  Does any one stand out or is it just personal preference.  And what would be the difference performance-wise in these last three? (346s, 346s modern, and 282s)

[Flowjoe]

I'm still looking for that Comp Cam part# if anyone has it.

It's in my post on the 10th of April on this thread...specs and part numbers right from Comps website...you can compare and contrast to your hearts content.

For what it's worth...The old cam profiles may have faults by modern standards but f we wanted modern we'd be buying new cars and not rebuilding old cars.  The old cams, warts and all help give the cars their character -  Who wants an odd ball (and unique and storied) engine like the old 302 if it behaves like a modern 5.0?

[Gambitt]

You guys have me going back and fourth...maybe you are correct, I might should stick with the original type...it won't be a daily driver anyway. 

[olympic69]

I'm still looking for that Comp Cam part# if anyone has it.

It's in my post on the 10th of April on this thread...specs and part numbers right from Comps website...you can compare and contrast to your hearts content.

For what it's worth...The old cam profiles may have faults by modern standards but f we wanted modern we'd be buying new cars and not rebuilding old cars.  The old cams, warts and all help give the cars their character -  Who wants an odd ball (and unique and storied) engine like the old 302 if it behaves like a modern 5.0?

I figured Gambitt missed it, so I just reposted the Info which I had incidentally just been looking at on the CC website. I guess everyone has a line they dont want to cross- but I figure on using stainless valves, bronze guides,studs and guidplates, non-leaded non- high octane fuel, Etc., my heads are ported 186's and I am useing headers- so as they say you cant go home, so to me looking at tweaking the Cam profile a bit is in order- but to each his own, I certainly respect that. The bottom line IMO, if you use the factory cam in the 302 ( or any worthwhile cam for that matter), have the guts to drive it like it was meant to be driven- nothing worse than a 302 being granny shifted at 5500 RPM...

Cheers-

[1968RSZ28]

Anybody have a part number for that 30/30 Comp Cam?

Gambitt -

Jerry says the Comp 030-030 camshaft part number is 12-107-3.

Paul

[Gambitt]

Thanks!

[olympic69]

Thanks!

What did you end up doing???

[Gambitt]

I called summit and ordered the Comp cam.  I went with the original type.  They don't actually keep it in stock, but they can still get it.  I still don't have my engine together yet...I lack the rockers and pushrods...and I think that is it.  Might get it running this winter and set it in the car next spring.