3.0Ltr. New Rebuild Runs Hot

[DavidMixon]

Help!
I rebuilt a 3.0ltr. motor for my 1970E. 10:1 Pistons, S cams, Electromotive twin plug. Motor started immediately, runs smooth. temp starts to rise over 210 degrees continues up to 230 degrees. Timing is 5 Deg at 1000 RPM, Max timing is 30 degrees above 4000 RPM (checked both upper and lower timing to balance). Webers are 150 mains, 65 idle, 175 Air, F3 Emulsion and 36mm Venturi. Car has front fender oil cooler. Block oil cooler is working double checked thermostat. Oil lines to and from front cooler get hot so thermostat is working for front cooler. Bypass pistons and springs are new and correct for 3.0ltr. Checked temp sending unit with heat gun (very close to indicated gauge temp). When motor get hot oil pressure drops to about 15-20lbs. goes back up to 60 when motor cools.

I have checked everything I know to check; any suggestions?
Thanks for any help.
David

[Flat6pac]

You need a matching temp sender to the gauge . If the gauge is a 70 then you need a brass sending unit. The3.0 original equip is chrome so the match isn't there. If you have the 2.2. Take it off there as they're interchangeable
Bruce

[kodioneill]

It would be nice if Bruce is right. To check for sure, use a meat thermometer (digital type) and check the temperature of the oil in the tank.

[DavidMixon]

Bruce:
I used all senders (oil temp and pressure), thermostat from my 2.2.

Kodioneill:
I will check temp at oil tank
Thanks

[scarceller]

Running lean? Check your Air Fuel Ratio