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Old 02-03-2004, 03:16 PM   #15
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Most auto parts stores have reasonably priced clips for the rocker arms that prevent the oil for getting all over. I built a RV engine using a General Kinectics cam and all new valve train from Jegs. Was priced right and worked good for my application. Still has a little lope to it. Kinda neat!!! Jim
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Old 02-03-2004, 05:59 PM   #16
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the compression test was a cold motor. about 35 degrees. the cylinders that were low might be because it is hard to keep the pressure on the probe that is sticking into the plug hole. was going to take the front tires and fender well s off . to cold and the wind was blowing. did it from the dog house. not much room.
i replaced the bad plug wire and a new set of plugs. it is not bad as it was. motor has quited down some. i still have a knocking noise. but not as loud.
couldn't find the mod kit at jegs or summit . surfed the net and that is a pain to find something specific. if you have a part no pass it on pls.
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Old 02-03-2004, 06:07 PM   #17
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Try this. They clip over the end of the rocker and deflect the oil that comes through the pushrod. It is still a messy job, cover everything around or it will be stained. Open the windows or you will get smoked out.

John
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Old 02-03-2004, 08:07 PM   #18
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just received a call from a gm heavy truck mechanic who despises the 454. he says gm has made some good motors and the 454 isn't one of them . says a lot were made and they are all junk. and he has seen more than his fair share. discussed my problem and he says i have a cracked piston. cant figure that one out. is that believable???
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Old 02-03-2004, 09:16 PM   #19
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Sounds to me like a GM hater that wants to make a buck. Or a guy with a 503 sitting in his inventory he wants to sell. Most Mechanics say the 454 is a bullletproof engine to a point. Have you abused it?
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Old 02-04-2004, 06:32 AM   #20
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It's hard.......

...to believe a piston is cracked, given the compression numbers.
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Old 02-04-2004, 07:00 AM   #21
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GM mechanic?

Hmmmmm, sounds like a Ford man to me.

A thousand bootleggers cant be wrong...................

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Old 02-04-2004, 07:55 AM   #22
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What does your oil look like? Metal parts start breaking and it doesn't take long before the oil gets full of little particles.
Did he tell you to scrap the engine and go with a 460 and C6?

John
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Old 02-04-2004, 08:39 AM   #23
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Thumbs down can't swallow Ford guy

I have followed this thread with interest and I can't swallow the Ford guys asessment, it goes against many years in vehicles with both engines.
Allways used to run big blocks in my traveling job life and seemed to favor the GM's....from a '72 Corvette to Burbs to 3 motorhomes.
While I don't have nearly some of the specific mechanical knowledge of some of the fine posters here, I have had a lot of highway mileage time....I have repowered one motorhome with a local rebulder and had no regrets.
LOL, jem
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Old 02-04-2004, 08:45 AM   #24
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additional comment

Realized one strong opinion I have is to go to a 4 main engine on a replacement and if you rebuild yourself or have a good local man, would not worry if you have a 2 main engine' but would consider a RV crank....jem
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Old 02-04-2004, 09:23 AM   #25
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the guy isn't trying to sell any thing. motor hasn't been abused just used for the past four years. i do get on down the road i normally lock the cruise at 68 on the interstate.
in any case i plan to pull the motor first part of march and we will find out what is driving me nuts. or it will blow up during my trip to florida. after warm up it is soo smoth no vibration at all.
the 454 mechanic has worked for chevrolet for a bunch of years i guess we all have opinions. i think that is what this country is all about.. or should we line tye him to the stake an shoot him at sundown???
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Old 02-04-2004, 09:34 AM   #26
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Sundown

7 1/5 hours to go.

"Get a rope"

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Old 02-04-2004, 02:41 PM   #27
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thats why HEI 454 motors ar so unbelievably popular for hot rods, etc. Just take a look at Jegs or some other high performance parts book, there are page after page of custom accessories for that rotten old motor
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Old 02-04-2004, 05:00 PM   #28
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looking for recruits for the firing squad. only problem is the guy is in Richmond VA. how we going to do this one smiley
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