[QUOTE=TorinoGT;987156]Well I think its happened to me, It looks like I have become a victim of a failed roller lifter!
For those that are not familar with my car/engine. I have a 100% STREET driven 1970 TorinoGT, 572 stroker w solid roller cam.
build thread for those unfamilar...
572 P-51 Pump Gas Street Engine
while driving home from a night out on Woodward, cruising along at aprox 2500 rpm the engine started making an AWFULL clanking noise... I immediately pulled off and shut down and later towed the car home.
Next morning I pulled the rocker covers, nothing obvious, nothing missing, or broken. No parts laying in there. turned the engine over with the bump starter, and it made a very loud metal on metal squeel. So im guessing thats a roller lifter failure.
My question(s) are this... and im looking for any and all opinions please... especially those that may have experience making a roller motor live on the street.
What route should I take?
Replace with the same cam and different lifters or same lifters?
Less cam (with less spring pressure?) although I hate to give up power.
Solid lifter cam? (again, I hate to give up power AND my nice idle)
Any opinion on what type of roller lifters to use? if money is no object, what are the best lifters?
Should I run more idle (which would increase oil pressure at idle)?
HOW OFTEN DO YOU SET YOUR VALVES?