"068" Cam Question - Pontiac GTO Forum
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post #1 of 13 (permalink) Old 08-24-2019, 03:25 PM Thread Starter
 
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"068" Cam Question

I'm replacing the "067" cam in my 67 400 with the "068" factory spec cam. My car is a TH400 auto with A/C, power steering and power disc brakes. Will the "068" cam produce enough manifold vacuum to run all this stuff?
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post #2 of 13 (permalink) Old 08-24-2019, 10:46 PM
 
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Yes.
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post #3 of 13 (permalink) Old 09-14-2019, 06:03 PM
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Yes indeed. The 068 is a very mild but effective cam. Smooth idle and plenty of vacuum.
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post #4 of 13 (permalink) Old 10-18-2019, 09:58 AM
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Am also looking for 068 cam, so exactly what cam (brand and #) is that now. A search on Summit doesnt even show a cam for 69 and a thread with a cross reference table to several brands all show more lift than the original 068. thanks
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post #5 of 13 (permalink) Old 10-18-2019, 10:16 AM
 
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Here's Butler's collection of Pontiac original cams (made by Melling) and this should help you out. If Summit is your place to shop, you can use Butlers info to find it on Summit.

https://butlerperformance.com/c-1234...ment-cams.html

Last edited by 1968gto421; 10-18-2019 at 07:29 PM.
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post #6 of 13 (permalink) Old 10-18-2019, 10:40 AM
 
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The Melling SPC-7 is probably the cheapest 068 cam. The cheapest price for one is usually on Ebay. But, Summit has a "beat-a-price" deal.

Some Ebay sellers don't charge tax. Summit now does charge me tax. Makes about 10% difference.

https://www.ebay.com/itm/Melling-SPC...sAAOSwg0BZzIW5

I get a 10% vet discount at AZ & O'Reilly. It's enuff to pay the tax. Don't know if it'll work on ship-to-home orders or not.

https://www.autozone.com/internal-en...07135_705947_0

https://www.oreillyauto.com/detail/b...t/spc7/4441260

The Summit 2801 is a sort of higher lift version of the 068. It's cheaper but will probably require new springs. But, if you're gonna buy new springs anyhow, the Summit cam will save a few bucks, and provide slightly more power.

https://www.summitracing.com/parts/sum-2801

https://www.ebay.com/itm/Pontiac-V8-...AAAOSwmrlU0mJ9
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Last edited by bigD; 10-18-2019 at 11:02 AM.
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post #7 of 13 (permalink) Old 10-18-2019, 04:14 PM
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Ok, thanks all, am Oregon so sales is only tax we dont have. Yes, am changing heads so will have new springs, etc. Dont know why I couldnt pull up anything on Summit, as I have read previous posts by you guys and you were getting Pontiac cams there. Will call them if all else fails. Appreciate the info, mav
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post #8 of 13 (permalink) Old 10-18-2019, 07:21 PM
 
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"...Dont know why I couldnt pull up anything on Summit, as I have read previous posts by you guys and you were getting Pontiac cams there..."


https://www.summitracing.com/parts/mel-spc-7

If you know the brand & part number, you can just enter it in the "search" box. "068" is not an actual part number. It's just the last 3 digits of the part number GM used. So 068 has always been used, by Pontiac guys, to ID it. Same with the 744 & 041 cams. The Melling numbers for these cams are SPC-3 & SPC-8.

http://ronspontiacpage.com/reference...ckcamspecs.htm

If you just wanna see what Pontiac cams Summit has listed on their site, you can enter "camshafts", in the "Search" block, then click on "hydraulic flat tappet", then enter the car brand & engine. I always enter Pontiac 455.

https://www.summitracing.com/search/...rder=Ascending

You can either scroll down the entire list, or you can click on certain cam specs you like, and different brands, from the left hand column, under the words "Narrow Your Results".

I have noticed that not every Pontiac cam made is on this list. Sometimes, if you know the brand & part number of an unlisted cam, it will pop up & say they can order it for you & many times have it shipped directly from the factory or cam warehouse.

Many brands, other than Summit brand, can be found for cheaper prices than Summit lists. But, as mentioned, sometimes you can get the same or a slightly better price from Summit, thru their Beat-a-Price deal. You can click on those words at the top of their page & see the details.

https://help.summitracing.com/app/an...tail/a_id/558?

Obviously, to get that deal, you need to find a cheaper price somewhere else. I usually find cheaper shipped prices on SOME stuff, on Amazon & Ebay. But, sometimes AZ, O'reilly, Advance Auto, or Rock Auto will be cheaper. You can usually get a 25% online discount for Advance. You can even buy & pay online, & pick up stuff they already have in stock. Earlier this year, I bought 3 batteries at one time & saved quite a bit this way. Was by far the cheapest price I found for batts.

To get the 25% off code, I usually Google "25% advance auto coupon".

https://www.offers.com/advance-autop...BwE&em=6826476

This will not work on all special order items, but WILL work on most stuff they have in stock, that are not already under some special sale price.
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Last edited by bigD; 10-18-2019 at 08:12 PM.
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post #9 of 13 (permalink) Old Yesterday, 02:24 PM
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Hey thanks, yeah I tried putting in part # and brand and found it , but when I put in camshaft then entered the car (under recent vehicles) it wouldnt show anything. Found the Melling spc7 cam though, also checked amazon, etc. , everybody seems right at $120 on it, (lowest I found). thanks again for info, mav
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post #10 of 13 (permalink) Old Yesterday, 03:20 PM
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I may not need any cam, am I the only one who wasnt aware of the Dealer Service Information Bulletin dated Feb. 3 1967? Its in Zazzarine/Roberts GTO restoration guide (pg. 384). What started this is a compression check I did a few days ago and 7 cylinders were 162-173, but #2 was 149 so thought I had a problem. (car is 69 judge Ram Air 3). I looked at the Motors Manual and they show 195 pressure. I called previous owner and he said it never had that much even when it was new. Hard to remember almost 50 yrs. ago but he was pretty sure it was about 170. I wont quote the bulletin unless you dont have the book and are interested. Curious what you guys have for comp. pressure on similar engine. later mav
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