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Has anybody had any experience with this Comp Cam # XTQ294S-8 part no. 23-362-5, especially for use on the street? Specs are: Duration - 294/299 Duration @ .050" - 264/270 Lift - .567/.579 Lobe lift- 0.378/0.386

I need a new set of valve springs but don`t want to pull the heads to put them on. Is there an inexpensive(cheap) spring compressor available for the big blocks that works well? I would also need a fitting for the compressed air used to hold the valves in place, unless there`s a better method...

What would cause the vacuum advance to stick when the engine is revved? This is a Mopar Performance electronic distributor and if you rev the engine over about 2300 rpm the engine will come back to approx. 2000 rpm and stay there until you disconnect the vacuum line from the advance. You can...