Rick, the reason for the filter changes isn't to freshen up the
oil. In dirt racing, the
oil gets very dirty depending on how dusty the track is. Replacing the filters nearly weekly just ensures the dirt particles stay out of the important things.
Engine can get up to around 230 at times. It usually gets shut down at that point... unless of course there si a lap or 2 left and it's close. Revving the motor during cautions brings the temp down. Usually the temp stays around 210-220. It does get up there.
Motor is 12:1 355, double hump heads w/larger valves, victor jr intake, 2bbl holley 500, Tight Lash Cam Duration @ .50 on intake 252 on exhaust 260 Lobe Lift on intake .361 on exhaust .370 Lobe Separation 106 Seat Duration @ .20 on intake 281 on exhaust 289 Gross Valve Lift on intake .542 on exhaust .555 solid lift.
It's not too bad for a chebby. It gets the car around the track just fine! :P RPM's are usually 6500-7000 with a 6.50 rear gear
So you think maybe it'd be good to run the 50wt and some lucas then?