He and my late Grandfather were truckers before WWII . So they owned a fair number of trucks , in their careers .
Uncle had more than one GMC or Chevy truck with the 366 CI Chevy engine . And the engines prior to the 366 .
I remember Uncle telling me about a GMC that would run like a scalded ape . But it would only make a few trips to the coast before it had to go into the shop ( valve problems , I think ) .
Mechanic finally figured out it had a high altitude ( Pontiac , I think ) high compression heads .
Uncle loved the performance but could not stand the repair costs . Mechanic installed " regular " heads . Lost the added performance , but gained the reliability / durability .
Another thing I remember . When Uncle went out to start the truck in the winter , he had a block of wood he put on the accelerator petal . He would set the RPM's to about 1200 & go back into the house and drink another cup of coffee or what ever . 15 - 30 minutes latter he would go back to the truck and be on his waw . And the engine was warmed up and oil flowing properly before he got on the highway and went WOT .
I am sure he was sure this produced less wear on the engine .
Uncle had more than one GMC or Chevy truck with the 366 CI Chevy engine . And the engines prior to the 366 .
I remember Uncle telling me about a GMC that would run like a scalded ape . But it would only make a few trips to the coast before it had to go into the shop ( valve problems , I think ) .
Mechanic finally figured out it had a high altitude ( Pontiac , I think ) high compression heads .
Uncle loved the performance but could not stand the repair costs . Mechanic installed " regular " heads . Lost the added performance , but gained the reliability / durability .
Another thing I remember . When Uncle went out to start the truck in the winter , he had a block of wood he put on the accelerator petal . He would set the RPM's to about 1200 & go back into the house and drink another cup of coffee or what ever . 15 - 30 minutes latter he would go back to the truck and be on his waw . And the engine was warmed up and oil flowing properly before he got on the highway and went WOT .
I am sure he was sure this produced less wear on the engine .