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#1
04-23-2016, 07:02 PM
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lifter noise
Hello all, I went from a HR cam to a SR over the winter. Engine ran great, went to TNT last week every thing ran great. Now my problem had a leaking trans pan gasket so I installed new. When I fired up to check and add trans fluid I heard a whining sound coming from the valley pan. If I bring up rpms goes away, but at under 1100 rpms it's back. Should I be concerned? The noise is quite loud.
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68 Lemans 505 cu in 9.892@136.18 69 FB 455 cu in 11.97 |
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#2
04-23-2016, 07:15 PM
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These are Crower lifters part #66260. Comp cam 276/284.
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68 Lemans 505 cu in 9.892@136.18 69 FB 455 cu in 11.97 |
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#3
04-23-2016, 08:09 PM
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sure it isn't in the converter/trans area? P/S pump if any?
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1994 Formula 535ci NA CV-1 - single 1050 with c14 - 940hp@7000/825tq@5200 Pontiac Powered 4th Gen Project Progress 
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#4
04-23-2016, 08:22 PM
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No, I'm positive the noise is coming from valley pan. I am thinking I have a roller lifter thats bad. Always had HR before and they were quiet. There has only been 5 full passes down the track and dyno time on this engine.
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68 Lemans 505 cu in 9.892@136.18 69 FB 455 cu in 11.97 |
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#5
04-23-2016, 10:51 PM
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What about the valve lash ? Lash loosening up is an indicator of potential issues.
This from a tech article: With roller lifters, a minor increase of 0.003 to 0.005-inch of lash could be a warning sign that the lifter’s roller bearings are failing. .
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'70 TA / 505 cid / same engine but revised ( previous best 10.63 at 127.05 ) Old information here: http://www.hotrod.com/articles/0712p...tiac-trans-am/ Sponsor of the world's fastest Pontiac powered Ford Fairmont (engine) 5.14 at 140 mph (1/8 mile) , true 10.5 tire, stock type suspension https://www.youtube.com/watch?v=qDoJnIP3HgE |
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#6
04-23-2016, 10:58 PM
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I was thinking about that too.
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68 Lemans 505 cu in 9.892@136.18 69 FB 455 cu in 11.97 |
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#7
04-24-2016, 04:47 PM
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Well I feel dumb! Started engine again after checking valve lash all good well noise is coming from back of engine put car on my lift while running its the converter making the racket. I am some what relived as I just put alot into this new combo. Kauffman dynoed 780 hp@ 6500 704 tw @ 5400.
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68 Lemans 505 cu in 9.892@136.18 69 FB 455 cu in 11.97 |
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#8
04-24-2016, 07:51 PM
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Glad the noise isnt in the engine its alot easier to swap converters than go through engine, what converter are ya using? If need a new converter give kenny at PTC a call real good people over there and real good products, nice number also, best of luck....
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#9
04-24-2016, 08:12 PM
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Yes I'm happy not the engine. This was a continental I had done when I put the 505 pump gas engine together back in 2009. That engine had a HR that I got from Pontiac Dude. This winter I had Kauffman redo my 505, we dicussed my converter he said run it see what it does. Well guess I will have to rebuild or get another. Want to get into the 9's.
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68 Lemans 505 cu in 9.892@136.18 69 FB 455 cu in 11.97 |
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#10
04-24-2016, 08:33 PM
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Call kenny at PTC @ 256/383-6868 if your not spraying he can do ya a very nice 8" converter for around $800 I think it is, tell him keith Jackson out of georgia told ya to call him, what trans are ya using th400?
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#11
04-24-2016, 08:42 PM
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Thanks for the phone # I am using a tubo 400. I'm considering my options. Sending the bad continental converter back to repair or going with a different maker.
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68 Lemans 505 cu in 9.892@136.18 69 FB 455 cu in 11.97 |
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#12
04-24-2016, 09:02 PM
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I've heard good things out of continental, I decided to go with PTC as all of my friends that are running X275 and radial vs world are using PTC or ProTorque and ProTorque was WAY out of my budget so thats when I went with PTC and all my friends keep telling me that I won't be disappointed, I bought a 8" converter as well as a TH400 with trans brake and promod aluminum drum and promod sprag and to be honest I couldn't be happier everything was very nice trans came with nice deep aluminum pan and they dyno test everything to make sure its all properly working... best of luck with whatever ya decided to do..
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