Hello all,
I am still new to FE engines (at least from the standpoint of actually building my own where I can pick the parts). I am building a fairly stock configuration 427 and I'm looking to pick a rocker assembly. I don't know anything about them, and I'm looking for advice.
The basic idea is the 425hp factory build from the late 60's. So parts are stock, or replacements of similar specs. The cam is the Lunati "stock replacement" (#30331001, solid lifter, .324 dur/.524 lift), springs are single type, load rate of 342lbs/inch.
I built the engine that went in GT40 P/1046 (the 1966 LeMans winning GT40...) 4 years ago, and the shop I work for has built several engines with the same configuration. It dyno'd in at 495hp, and has run a few historic race events without a hiccup (fingers crossed!). We use the original Fomoco rocker assemblies, for correctness reasons, and have not had a problem so far.
When I took apart the 427 I am building it had the comp cams (blue) roller rockers with an end support stand. I have seen two sets of these removed from FE engines with broken parts. Is this a common failure? Is it dependent on cam and spring specs? Are they safe to use?
Thanks