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THE LOBBY A gathering place. Introductions, sports, showin' off your ride, birthday-anniversary-milestone, achievements, family oriented humor. |
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#1
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SBC pushrods not spinning
On the 77 MC observed while diagnosing a miss at idle and a bog during initial light power takeoff. I'm assuming the cam is wiped. All I hear/ read about is how new cams are disintegrating left and right. Was told to "put in a roller". I'm like bull**** this is a passenger car cast pistons low compression 4800 revs max.
I'm willing to up the specs on a replacement a wee little bit but I do not want "camshaft failure" after replacing it due to "soft metal ". Any ideas on a good flat tappet? 350 2 jet all original.
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Hecho en China is not good for U.S. |
#2
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Sorry I misstated the application should have posted "hydraulic lifter" not "flat tappet".
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Hecho en China is not good for U.S. |
#3
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Make sure you run a oil with high levels of zinc.
https://www.speedwaymotors.com/the-t...reakdown/32479 I use STP.
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'68 GTO '69 Corvette '75 Cadillac Coupe Deville TOM |
#4
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I just broke in my bone stock ‘62 Mercury V8. I’ll be honest with you, I was nervous as heck for the same reasons.
I used Driven brand 10-40 break in oil, slathered Torco cam break in lube on cam and lifters, pre lubed engine with drill till I had oil at all 16 rockers, as my son slowly turned the engine over by hand. Stactic timed it when I dropped the distributor in, filled the carb float bowl, dribbled some gas down the throat too. Fired instantly, and all is well. I honestly am going to get my next cam and lifters treated before I install them. I forgot the name of the process, but it’s just such a roll of the dice these days. There is a few threads here on the treatment process, and it’s not cheap, but I don’t have time or money for a redo either. My plan is to pull the cam out of my ‘63 LeMans next winter. Good luck.
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‘63 LeMans- ‘69 400 w/ original transaxle. 2.69 gears. ‘55 Catalina ‘62 Mercury Meteor-all original, bought new by my grandfather 71' GTO -original 400/4-speed/3.23 posi 13.95 @ 102.1 on street tires @ 4055lbs.-now my sons ride |
#5
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The best replacement cam for nearly all stock applications is the Sealed Power CS274, period!!!
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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... |
#6
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Nearly everything I have read imply that is the poor lifters, not cams or oil.
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"At no time did we exceed 175 mph.” Dan Gurney's truthful response to his and Brock Yate's winning of the first ever Cannonball Baker Sea-to-Shining Sea... Still have my 1st Firebird 7th Firebird 57 Starchief |
#7
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Unavailable all over on that sealed power
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Hecho en China is not good for U.S. Last edited by JacintasHot; 05-18-2024 at 09:01 PM. Reason: Duplicate |
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