Ant
With the
oil cooler blocked off .... you will still not get the motor up to 210-220*degrees.....
Only with a Thermostat will you get the
oil up to temp ....unless you are flat out on a race track.....
As far as breathing is concerned .... you are on the right track..... but you need to add another breather on the bottom end of the motor ...... like where the mech fuel pump use to be .... make up a block off plate with a -12 line going up to the breather tank..... add a check valve so it lets pressure out and not in....
Also you need the equilivant of two 1 1/4"inch breather tubes for the motor ..... if it's making lots of HP..... for the street one will do....
The original breather tanks worked well back when they were making lower HP.... but now days .... a good motor will make a lot of HP and needs a lot of breathing....
Go over to KMSAC ..... Kirkham motorsports auto club ..under forum and you'll see how we did the breather system on KMP 259..... it caused us a lot of leaks until we got the motor breathing.... and lowered the pressure in the motor...
Morris