Quote:
Originally Posted by Scarebird
One thing that surprises me is Rhoads does not offer a lifter for the LS Series - had they it may be an option for gen V builds that delete the DOD.
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Actual they have V pro lifters that will fit in a Gen V that gets rid of the DOD, they just are not listed for that cause they don’t drop straight in. IRC it takes a .050” longer pushrod to make them work, plus an adjustable valve terrain. I have a set.
Gaining 3” to 5” of vacuum is pretty huge when you have a bigger cam and need to pass a sniff test.
The down side is if your concerned with lifter noise, with aluminum heads they are not the easiest to set, they much louder once the engine is hot.
Aluminum headed Pontiac’s can be loud with the V series flat tappet lifters also once hot. People set them at .020” cold like the Rhoads instructions say then end up running .026” to .030” hot. They get loud fast after .020”. Probably adds some abuse on the valve guides too.