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06-11-2014
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#1 |
  
Join Date: Aug 2005
Location: Northridge, CA
Posts: 1,461
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Oil & Flat Tappets
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06-11-2014
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#2 |
  
Join Date: Nov 2007
Location: Squires (near Ava MO in the Mark Twain N'tl Forest) - Missouri
Posts: 6,493
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Re: Oil & Flat Tappets
Yes, I've experienced a cam that went flat; on a flat tappet SBC, actually. And, here's a link to an article by Marc Haibeck with regard specifically to the LT5 and recommendations for our engines.
In short, Amsoil AMO 10W-40 has the ZDDP levels originally available and spec'ed for the LT5. If not AMO, then something equivalent with ZDDP levels sufficient to support not only our flat tappets, but those long double row chains as well. P.
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Good carz, good food, good friendz = the best of timez! 90 #1202 "FBI" top end ported & relieved Cam timing by "Pete the Greek" Sans secondaries Chip & dyno tuning by Haibeck Automotive SW headers, X-pipe, MF muffs Former Secretary, ZR-1 Net Registry |
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06-11-2014
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#3 | |
Join Date: Aug 2005
Location: Scottsdale, AZ
Posts: 2,452
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Re: Oil & Flat Tappets
Quote:
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06-14-2014
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#4 |
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Join Date: Jan 2004
Location: Alex VA
Posts: 1,087
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Re: Oil & Flat Tappets
loads on the lt5 cam buckets are relatively light
with the light valves and relatively small light springs and the LT5 quality harnened parts we don't see too much of the stock stuff going flat I use the mobile gold top extended with more zddp but the amsoil stuff is a step up and better but for sure the slippery stuff helps
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95 390 LPE ZR1 (505 rwhp) LSV = Lingenfelter Super Vette Twin Turbo 2003 Z06 (800 RWHP) |
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06-14-2014
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#5 | |
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Join Date: Mar 2010
Location: Fort Worth, TX
Posts: 396
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Re: Oil & Flat Tappets
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06-14-2014
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#6 | |
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Join Date: Apr 2004
Location: ATL. GA.
Posts: 2,170
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Re: Oil & Flat Tappets
Quote:
About $8-10 per quart, small price to pay for piece of mind.
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Steve 1990 Steel Blue/Black #2355 1990 Red/Red #1473 1991 Quasar /Black #118 Sold 1991 Turquoise/Black #766 Parted Out 1993 Yellow/White #179 Sold 1990 Black/Gray #1361 Headers/4:10s Sold |
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06-14-2014
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#7 |
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Join Date: Mar 2010
Location: Fort Worth, TX
Posts: 396
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Re: Oil & Flat Tappets
Has anyone actually ran into any problems using more common off the shelf oils such as Mobil 1?
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06-14-2014
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#8 |
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Join Date: Apr 2004
Location: ATL. GA.
Posts: 2,170
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Re: Oil & Flat Tappets
Ran Mobil 1 for the last 11 years in the 91 with no issues, I did change to Amsoil this year after Marc did the upgrades.
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Steve 1990 Steel Blue/Black #2355 1990 Red/Red #1473 1991 Quasar /Black #118 Sold 1991 Turquoise/Black #766 Parted Out 1993 Yellow/White #179 Sold 1990 Black/Gray #1361 Headers/4:10s Sold |
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06-14-2014
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#9 | |
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Join Date: Nov 2007
Location: Squires (near Ava MO in the Mark Twain N'tl Forest) - Missouri
Posts: 6,493
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Re: Oil & Flat Tappets
Quote:
C-LINK
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Good carz, good food, good friendz = the best of timez! 90 #1202 "FBI" top end ported & relieved Cam timing by "Pete the Greek" Sans secondaries Chip & dyno tuning by Haibeck Automotive SW headers, X-pipe, MF muffs Former Secretary, ZR-1 Net Registry |
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06-14-2014
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#10 | |
  
Join Date: Aug 2009
Location: South Dakota/California
Posts: 3,797
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Re: Oil & Flat Tappets
Quote:
 Engine............................................ ...................Transmission................... Differential  
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Left Clickable links -Solutions- LT5 Modifications/Rebuild Tricks Low Mileage ZR-1 Restoration 1990 Corvette (L98) Modifications LT5 Eliminated Systems LT5 Added Systems LT5/ZR-1 Fluids 1995 LT5 SPECIFIC TOP END REBUILD TRICKS Last edited by Dynomite; 06-14-2014 at 06:19 PM. |
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