What should the car idle at in drive? Stock tuning is 550 rpm but, seems too low . The cam specs are as follows: Crower #00402LM hyd. roller - intake duration 278 lift .498
exhaust duration 286 lift .519
lobe seperation 114
duration at .050 intake 220 exhaust 228
lobe lift intake .332 exhaust .346
Engine is 95 LT1 355 , stock aluminum heads with valve job manley valves 2.00 intake 1.550 exhaust - Everything else is stock. Trans. is automatic

 

You need tuning done for it to idle OK. 550 is too low. I'd recommend at least 750 RPM for in gear idle. 800 RPM would probably be better though.

Stock is 550/650 for gear/neutral.