New lifters and old cam?
#975405
04/18/11 01:00 AM
04/18/11 01:00 AM
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Joined: Jan 2010
Posts: 456 Santa Barbara, CA
HitIt
OP
mopar
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OP
mopar
Joined: Jan 2010
Posts: 456
Santa Barbara, CA
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Hi all- I've got a couple hydraulic lifters in my 440 that don't seem to pump up as well as others resluting in some play in the rocker.
What is the thought on replacing lifters only and not the cam? Is this done without issues? Do I need to break the lifters in in any particular way?
Cam is a basic 488 lift made by Elgin.
Thanks!
very clever dinner. appetizing food fit neatly into interesting round pie.
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Re: New litters and old cam?
[Re: HitIt]
#975406
04/18/11 01:25 AM
04/18/11 01:25 AM
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Joined: Jan 2003
Posts: 9,826 las vegas
70AARcuda
master
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master
Joined: Jan 2003
Posts: 9,826
las vegas
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no problem with new lifters on old cam..
just went you start the engine...you need to break in cam again...
Tony
70 AARCuda Vitamin C 71 Dart Swinger 360 10.318 @ 128.22(10-04-14 Bakersfield) 71 Demon 360 10.666 @122.41 (01-29-17 @ Las Vegas) 71 Duster 408 (10.29 @ 127.86 3/16/19 Las Vegas)
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Re: New litters and old cam?
[Re: 70AARcuda]
#975407
04/18/11 03:05 PM
04/18/11 03:05 PM
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Joined: Feb 2010
Posts: 18,493 Granite Bay CA
Kern Dog
Striving for excellence
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Striving for excellence
Joined: Feb 2010
Posts: 18,493
Granite Bay CA
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Quote:
no problem with new lifters on old cam..
just went you start the engine...you need to break in cam again...
Well... technically you are mating the new lifters to the old cam. One thing to consider: What caused the lifters to degrade? You might want to measure the lobes from the bad lifters to ensure that they match the other lobes. If there is ANY sign of heavy wear, replace the cam. Once the surface hardness starts to wear away, cams will fail quickly.
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Re: New litters and old cam?
[Re: Kern Dog]
#975408
04/18/11 11:37 PM
04/18/11 11:37 PM
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Joined: Jan 2010
Posts: 456 Santa Barbara, CA
HitIt
OP
mopar
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OP
mopar
Joined: Jan 2010
Posts: 456
Santa Barbara, CA
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Thanks for the info guys. The lifters in question seem spongy like they have a 1/4" of movement in the hydraulic mechanism if that makes sense. Does that still seem like the cam could be bad or more likely a bad lifter? I completely understand the reason behind measuring the cam just wondering if I'm on the right track with the bad lifter idea. Thanks!
very clever dinner. appetizing food fit neatly into interesting round pie.
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Re: New litters and old cam?
[Re: 70AARcuda]
#975411
04/19/11 12:42 AM
04/19/11 12:42 AM
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Joined: Oct 2003
Posts: 3,698 NE Oklahoma
Von
master
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master
Joined: Oct 2003
Posts: 3,698
NE Oklahoma
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I have one solid cam that has had 4 sets of lifters on it over the years. No problems....
72 RR, Pump gas 440, 452s, 3800 lbs, Corked, ET Radials,. 11.33@117.72.
Same car, bone stock 346s, 9.5 comp, baby solid. 12.24@110.
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Re: New litters and old cam?
[Re: Kern Dog]
#975414
04/19/11 05:40 PM
04/19/11 05:40 PM
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Joined: Jan 2010
Posts: 456 Santa Barbara, CA
HitIt
OP
mopar
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OP
mopar
Joined: Jan 2010
Posts: 456
Santa Barbara, CA
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Thanks for that info. I am definitely going to inspect the surfaces soon, and even measure the lift between the valves to see if one of the cam lobes is 'different'.
very clever dinner. appetizing food fit neatly into interesting round pie.
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