Recent content by Mopah340

Thanks for the advice!

I accidentally posted that with out finishing post. I clarified earlier in thread. Engine oil for 340 with purple cam( unknown specs as I didn’t build engine) I don’t race it just drive it on the street here in Massachusetts from spring to early fall

Got it!

So is it safe to safe if the pressure is too high for a moment the oil pump rat races excess oil and some oil is still being sent through engine?

Thanks!

I’ve been running Valvoline VR1 20w50 (the VR1 with zinc in it)since I’ve had the car for the past 4 years. I run it spring, summer and a little in the fall on nice days here in Massachusetts. I change the oil at the end of every season, roughly every 1200-1500 miles.

I need to get a pressure gauge installed. It’s all original with original Rally Dash. All gauges operational. Oil pressure gauge slightly over 1/2 way point on start up and 1/2 way consistently. I’m a purist and didn’t want to add gauges to the interior. I may tuck a small one under the dash.

Sorry guys I’m having technical difficulties here. Purchased matching #s Dart Swinger 340 4 years ago. Lots of documentation with car. Except for engine. Hand writ note saying “bored 30 over, hydraulic H cam. Purple bigger, compression ratio 10.5:1” I’ve been running VR1 20w50 based upon...

I know. Another huge can of worms.

Massachusetts, summer only.

10w30, 10w40 or 20w50 oil

Thanks for the replies. I’m not sure how the engine was built, only paperwork found states “bored 30 over with hydraulic purple cam( bigger)”. That was only info about motor with stacks of paperwork with car.

Hi all, I know I’m opening up another can of worms here, I’m currently running VR1 20w50, for the last 4 years since I owed my 340. I’ve been told it’s to heavy for a street car here in the summer months in Boston area. So I’d like to stick with Valvoline VR1 but afraid to go down to 10w30 since...