Quote:
Originally Posted by twobjshelbys
I had a IR in my Cobra and a friend has an "R" in his GT40.
They have a really lopey cam, and they don't like to run slow. It will run a little warm if you are just driving on the street. I always tried to run mine in lower gears at higher RPMs to keep it happy. That meant almost all driving except for the freeway was in 2nd or 3rd to keep it above 3K RPM. Then it was "happy". Running higher RPMs keeps the oil temp at water temp (200+) Another choice is to bypass the oil cooler at the front. |
Read this carefully. The "R" engines are higher strung than the "SR" engines. What that means is that they need higher rpms to keep them happy. Not the best choice for a street engine. You will be revving higher to keep it in the power zone. Low rpms will be adverse to driveability.
Also, if the trans has the fifth gear overdrive .64 ratio, make sure the engine is in its happy zone at your favorite cruising speed, Otherwise, fifth gear may be useless to you.
And the water temp should never go above 100 degrees. The SPF radiator and twin fans are very efficient at cooling these cars. The fans come on just below 100 degrees and the temp will drop immediately. Even sitting in traffic on a hot day.