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#1
12-09-2014, 12:25 PM
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I haven't made up my mind yet on whether these are a marketing gimmick or actually have some benefit. Cams get plenty of splash, except maybe at idle. So it can be debated if these actually 'work' or provide any 'extra' protection. Guess it couldn't hurt.
The jury is still out on if the rash of lobe failures on HFT cams were a result of poor cores or oil lacking zddp, IMO. I know folks who run off the shelf oils with HFT cams and have for years with no issues. .
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. 1970 GTO Judge Tribute Pro-Tour Project 535 IA2 http://forums.maxperformanceinc.com/...d.php?t=760624 1971 Trans Am 463, 315cfm E-head Sniper XFlow EFI, TKO600 extreme, 9", GW suspension, Baer brakes, pro tour car https://forums.maxperformanceinc.com...ght=procharger Theme Song: http://www.youtube.com/watch?v=7zKAS...ature=youtu.be |
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#2
12-09-2014, 03:07 PM
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Quote:
 I worked for an independent auto parts store from 1985-1998. I probably sold 50 SBC cam kits. The #7 exh. lobe on my T/A engine started going away around 75,000 miles. I took better care of that engine and car than probably anyone. Have no idea why that happened... I sold 3 aftermarket cams for T/A 400's through this time. All 3 showed signs of beginning lobe failure, one only had 45,000 miles on it. All 3 were buying cams for a performance upgrade, had no idea lobes were degrading. I got to watch and ask questions at my engine builders shop one, while his on was installing a cam. I learned a LOT, was surprised at all the details they went to, made sense though. I believe most cam failures might be from installation error. I even ran across a High Performance Pontiac magazine, last week that the cam lube used was white lithium grease.......that won't work, for sure.... I have not gotten any feedback on any of the latest HFT cam/lifter improvement cures...
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1977 Black Trans Am 180 HP Auto, essentially base model T/A. I'm the original owner, purchased May 7, 1977. Shut it off Shut it off Buddy, I just shut your Prius down... 
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#3
12-09-2014, 06:04 PM
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lifters
Yeah I guess its hit or miss but was just wondering about them.
Seems like anything that's gets quality oil to the cam face is a good thing. Gerry
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1968 Firebird 400, 068 cam, TH400 & 13" Continental Converter, Auburn posi with 3:08 factory gears, Cliff's Q-jet resting on a 68 factory iron intake, GM HEI and Ram Air pans and RARE Long Branch Manifolds |
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#4
12-09-2014, 07:23 PM
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My local Pontiac engine guy was also pointing out that the "old" stock Pontiac rods had a grove cut in the crank-end that would splash & squirt a lot of oil around the cam area.
Not sure how much of that corresponded to longer cam life, but I am sure it certainly did not hurt. After struggling with this issue previously, I am very hesitant to go flat tappet on my new build, but my car budget is pulling me in that direction, as I do have a very long xmas list for the 73... I was discussing this with Dave at SD last year as well, and he mentioned they had very good results with the Crower solid flat lifters with the Cool Face design. This is what I am currently leaning towards until I spring for a roller and aluminum heads again. |
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