6sally6 wrote:

TKOPerformance wrote:

Daze wrote:

Like I said before I only think it is critical in extreme situations.  Boost or NOS above 6000 RPM.  In those situations one degree either direction can cause detonation in an intake or to much advance in the cylinder.  Both results can be catastrophic but with a normal every day engine its not going to be an issue.  A few years back I was fighting an issue on a 351w on my run stand. Engine wasn't running poorly but I had two header tubes not getting as hot.  I was playing with EFI in self tune and it kept going rich.  Problem ended up being the 5 and 6 spark plug wires had gotten switched so one was way advanced and the other was way retarded.  Point being even though far from perfect the engine was still running okay and if a stock(ish) motor can be off by that much without major issues the one or two degrees of phasing is not going to effect it at all.

Or convert to a gear drive, 

 

Although...I do love the sound of a gear drive...(on somebody else's engine) 
6s6
 

I vote for crank trigger and no distributor.

I make a plug that goes where the distributor goes with just enough of the distributor shaft and and bearings and gear to drive the oil pump. Been doing it for 45 years. Can't remember having one fail. The Electromotive stuff works well.

Explorers and Mountaineers eventually used a DIS system in the 5.0.  The timing cover mounted a crank sensor and the distributor hole had a combination drive pud for the oil pump and cam position sensor. 


OR...drive the oil pump directly off the crank.  Dry sump baby!  I mean, if we're building a race car ANYWAY...

Drive the fuel pump off the crank too for that matter.