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07-28-2025, 12:46 PM
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#1 |
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Stocker Tooled Steel Cam & Lifters
When using a tooled steel camshaft in a stocker, is everyone using coated lifters or is that just an option ? Is anyone using uncoated tooled steel lifters is what I'm asking I suppose ?
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07-28-2025, 06:46 PM
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#2 |
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Re: Stocker Tooled Steel Cam & Lifters
Assuming everything else is good, you can run tool steel lifters on an 8620 steel cam billet. I don't like DLC coatings, at all. I've seen other having good results from the stuff Rocketman does.
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Alan Roehrich 212A G/S |
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07-28-2025, 10:03 PM
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Re: Stocker Tooled Steel Cam & Lifters
Quote:
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1989 Camaro Iroc-Z I/SA B&B Auto Machine Shop. |
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07-28-2025, 10:17 PM
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Re: Stocker Tooled Steel Cam & Lifters
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WAY too many issues with various DLC coatings in the past. Compatibility issues with oils, other materials it interfaces with, etc. When it starts to come off, and it will, it's like a hand full of industrial diamonds circulating in your engine.
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Alan Roehrich 212A G/S |
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07-30-2025, 04:23 PM
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Re: Stocker Tooled Steel Cam & Lifters
I use non coated tool steel lifters with a cast core cam for years.
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Steven Barnes Stock 704 N/SA |
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08-02-2025, 07:40 PM
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#6 | |
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Re: Stocker Tooled Steel Cam & Lifters
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Yep. Sold a few dozen sets. The trick for many engine builders was to break in the camshaft using Shubeck lifters, then put tool steel lifters in.There's another brief break in required there, but once the Shubeck lifters burnish the cast iron cam, the tool steel lifters will break in and run reliably, with good quality oil. You cannot, under any circumstances, run DLC coated lifters on cast iron core camshafts. I know one lifter supplier told people you can, and it was disastrous. Cast iron is by nature abrasive, and DLC simply will not live on it.
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Alan Roehrich 212A G/S |
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08-02-2025, 04:38 PM
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#7 |
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Re: Stocker Tooled Steel Cam & Lifters
A lot of variables here .
Ramp design, valve weight, spring pressure, Rpm, to name a few. Cast iron cams with aggressive " Stocker" Ramps , tool steel lifters with 215/400 maybe 100 runs before there's lobe issues and need to be replaced. More spring pressure , fewer runs, less spring pressure more runs. Tool steel cam cores, DCL lifters , can run higher spring pressures , no break in issues. PPPC in NC make a very good DCL lifter Coating work done in France. Delivery sometimes can be longer than you want. Around 1,250.00 a set. Steve Teeter Stk/SS. Q620/7888 |
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