Stocker Tooled Steel Cam & Lifters

[Alan Roehrich]

To be abundantly clear, what NASCAR is using is so far removed from what is on an NHRA flat tappet Stock Eliminator engine as to complete preclude any direct comparison.


And I remember vividly more than one instance where entire teams had failures directly attributed to DLC, and even engine suppliers who supplied several top teams. JGR at one point pulled every engine in every single car they had, and every team they supplied. The DLC came off, and they were arguing with the DLC coater, the lifter supplier, and looking at their oil that they were having blended themselves.


It's not common now, but again, these are engines with larger diameter lifters, with shaft mounted high ratio rockers, closed cam tunnels, with 60MM and larger cam cores, trick oiling, dry sumps, and entirely different cam profiles and valve train systems.

[SS/AM]

We heard, but weren't concerned, nor did we care if other teams had issues, we didn't. All did their own R&D, even if the brands were identical. Funny how a shop with the issues had an in-house oil "expert", bbbbb be careful who's advice you take to heart.

What I've mentioned is exactly what I'd do today, if anyone wants to keep their head buried in 1995 it's up to them.

Happy Racing

[Terry Cain]

Originally Posted by john ancona

The question is at what lift ,spring rate along with what spring seat pressure

AND RPM and weight of valve.