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Old 08-05-2010, 02:20 PM
Dan
 
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A few problems with 385 stroker...

I just put in a newly machined 385 stroker with all new internals, started it up and on the passanger side, sounds like some lifter noise, i tried to adjust the rockers multiple time without any change.. also at about 2100-3000rpm there is a noticable shake from the drivetrain... any suggestions??

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Old 08-05-2010, 02:29 PM
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Quote:
Originally Posted by 87monte385
I just put in a newly machined 385 stroker with all new internals, started it up and on the passanger side, sounds like some lifter noise, i tried to adjust the rockers multiple time without any change.. also at about 2100-3000rpm there is a noticable shake from the drivetrain... any suggestions??
Got the proper flexplate/flywheel for your rotating assembly?
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Old 08-05-2010, 02:35 PM
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What Greg T said....also is this one of the "supposedly balanced assembly's" or did you personally have it balanced? As far as the lifters are concerned, did you use a good oil additive when breaking in the cam, might have a lobe or 2 going south if not.....I truly hope you don't though.
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Old 08-05-2010, 02:47 PM
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Did you have the rotating assembly balanced? Could be an exhaust leak from the headers. After a freshly rebuilt engine warms up and cools down a few times the header bolts can come a little loose. Check them at both ends.
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Old 08-05-2010, 03:23 PM
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I had a guy that does machining for a living put it together, so i honestly cant say I did it myself. He told me he put straight 30 weight oil in it to break in the cam (lunati voodoo 60104), i just got the motor running sunday and changed the oil last night and put in 7 quarts of VR-1 racing oil. started the car, same thing... i hope i dont have any bad lobes on the cam either, there shouldnt be its brand new, but that doesnt mean everything. the flywheel, i dont believe is balanced, i could be wrong though..
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Old 08-05-2010, 05:28 PM
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Quote:
Originally Posted by 87monte385
I had a guy that does machining for a living put it together, so i honestly cant say I did it myself. He told me he put straight 30 weight oil in it to break in the cam (lunati voodoo 60104), i just got the motor running sunday and changed the oil last night and put in 7 quarts of VR-1 racing oil. started the car, same thing... i hope i dont have any bad lobes on the cam either, there shouldnt be its brand new, but that doesnt mean everything. the flywheel, i dont believe is balanced, i could be wrong though..
rotating asmbly. clearance????
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Old 08-05-2010, 07:09 PM
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Quote:
Originally Posted by 87monte385
He told me he put straight 30 weight oil in it to break in the cam (lunati voodoo 60104)
that could be your problem if he didnt use an oil with zddp or a zinc additive. but i wouldnt jump to something as horrific as that. check that the rocker arm nut isnt bad also. i had to go bad on mine and every couple miles had to tighten in back up. then i just replaced all of them and no problems since
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Old 08-05-2010, 07:30 PM
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who the heck makes a 385,come on guys what are you talking about,is this a foriegn car????//////
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Old 08-05-2010, 07:45 PM
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Quote:
Originally Posted by hemi joe
who the heck makes a 385,come on guys what are you talking about,is this a foriegn car????//////
4.040" x 3.750" = 384.56 cubic inches, rounded off to 385.
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Old 08-05-2010, 08:03 PM
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Quote:
Originally Posted by 87monte385
He told me he put straight 30 weight oil in it to break in the cam (lunati voodoo 60104)
So, there were no further instructions for the cam break-in?

If he used the springs recommended by Lunati for this 60104 cam (#73943), then here's how it plays out. The installed on-seat pressure at 1.750" is 108 lbs. Between the intake and exhaust lobes, the exhaust lobe has the most lift at 0.525". The spring pressure is 462 lbs per inch. Multiplying 462 times .525 tells us that there will be an additional 242 lbs of pressure on the tappet at full lift. This is in addition to the 108 lbs of seat pressure, so the total pressure on the tappet at full lift is 350 lbs. This is unacceptable on a flat tappet camshaft and is the range of pressure you would expect to see in a hydraulic roller tappet camshaft installation. In my opinion, not only is it unacceptable after the camshaft is broken in on lesser springs, then changed to the stronger springs, but to try to break in the cam with these springs in place is an exercise in stupidity. I'm very surprised that Lunati would spec such a spring for a flat tappet camshaft.

Just my opinion you understand, but I think your engine builder should be tied to a pole and caned for not explaining all this to you.

Here's a tutorial I wrote for the Crankshaft Coalition Wiki. Maybe you'll gain some insight from it....
http://www.crankshaftcoalition.com/w...ricks#Cleaning
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Old 08-05-2010, 08:22 PM
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it's still a 350 sbc bored .040 over .what year was it was inducted to become a 355,383,385,whats next a 625.they are all 350 motors,stroked or not stroked.
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Old 08-05-2010, 08:30 PM
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Having a bad day Joe?
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Old 08-05-2010, 08:34 PM
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yes i'am,i can't seem to find anyone to come up with a set of heads for my motor.sorry for the stupid remark,i just am fustraited.
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Old 08-05-2010, 08:41 PM
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Quote:
Originally Posted by hemi joe
yes i'am,i can't seem to find anyone to come up with a set of heads for my motor.sorry for the stupid remark,i just am fustraited.
What is it you're looking for? Maybe the rest of us can help.
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Old 08-05-2010, 09:28 PM
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i don't want to jump 87montes post,i will start my own post.sorry 87monte.
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