here's my best attempt at explaining,

a diesel turns a max of 3250rpms from the factory, and im not up on their tuning but i dont think they will turn over 3500-4000rpms(without heavy mods). a gas engine of the same size 6.6L(402cu.in.) could turn 6500-7000 + without heavy mods. less rpms means less friction ( from what i understand) which means less heat.

with Whippled_496's thread, he has the 8.1L (496 cu.in.) gas engine which turns about 5000rpms. he wanted a large intercooler as his whipple was without one at the time, so he looked at the factory DMAX setup and found that in order to use the DMAX intercooler, he had to use the DMAX radiator and after he installed it and started doing logs and watching his gauges he found that the DMAX radiator was incapable of keeping his engine coolant temps down to an acceptable level, therefore he had to put his stock radiator(from the big block) back in and get the whipple intercooler for the 8.1L.

the part i dont understand about it is the diesel guys have to watch their EGTs when towing or using a tuning program/box, but i believe that is from the excess of unburnt fuel

what i am trying to say is a diesel engine produces less engine heat than a gasoline engine does and therefore doesnt require such an effective cooling system(as in a large radiator, etc.).

EDIT: this thread probably has the most info but he has a few more threads about his "I/C sagas"
https://www.performancetrucks.net/fo...or+intercooler

 

That's f'n badass!

 

Well I am not sure when they are under a load but I know that a diesel doesnt make **** for heat when they are idleing.

 

Same thing I want to do with a diesel truck from the eighties and not have to worry about smog ****'s

Too bad they didn't make a rcsb diesel for the GMT800

 

Thats a badass car, that would be fun to drive and yet very different.

 

Or the fender flares

at 50-70K a pop, i doubt its a REAL GNX.......pretty cool none the less.

 

Only a moron would do that to a real GNX. It's a converted cutlass. He started with a diesel car so he wouldn't have to **** with smog / emissions testing. It's a good idea to start with a diesel Cutlass so you don't have to worry about emission testing...in parts of the world where they do that, like here in MD.

 

Is there any video of it?

 

Ain't nothin like something rolling black smoke from the exhaust with Cali tags

 

i just threw up a little bit, not cool