Quote:
Originally Posted by ponyakr
Would a Voodoo increase the cyl pressure enuff to increase the chances of detonation, in a high CR pump gas engine, that may already be on the borderline ?
Or, are the Voodoo lobes so perfect they can increase pressure and yet not affect chance of detonation at all ? 
https://www.summitracing.com/parts/l...w/make/pontiac |
The thing with the voodoo lobes from what I've been told is they like to be installed a bit more advanced than the cam card would indicate. Which usually ends up being 5-6 degrees. Not only do the lobes prefer it but the idea is to have the intake lobe higher than the exhaust lobe at TDC during overlap by about .035-.040" This keeps from sucking in more hot exhaust gasses when the piston goes back down before the compression stroke, and less likely to detonate as a result.
So the last few voodoo cam installs I've done, I follow this method and so far to date they have been very pump gas friendly on our 91 octane.