3.9 4bt in place of a 6.2?

[stoney126]

hey all, I wa wondering if there is any benefit to this swap? has anyone done it? What power can you get out of the 4bt reliably and still have a good mpg.
Crewcab59 you got a pm coming

 

[imiceman44]

hey all, I wa wondering if there is any benefit to this swap? has anyone done it? What power can you get out of the 4bt reliably and still have a good mpg.
Crewcab59 you got a pm coming

There are some that have done it.
I like the cummins better than the 6.2 for crawling, I like the 6.2 more for highway driving, a V8 can go higher RPMs so with regular trannies it's nicer to drive, but for off road I will always go with a straight 4 or 6.

 

[72chevydsl]

The only advantage I see is getting rid of the 6.2. Oh yeah & the 6.2 will be replaced with a real diesel. An OD tranny would make it a lot more drivable.

 

[rjfguitar]

Well for one the 3.9 4 banger is capable of a lot more power. I hear it can make 300HP/650ft lbs or so with some modifications, thats a lot more than a 6.2 can make with a turbo and other mods.

 

[mcinfantry]

http://coloradok5.com/forums/showthread.php?t=163394

 

[K10ANDYKHAMNIC]

do they take forever to spool up like a 5.9 ?

 

[CrewCab59]

They can be made to spool up faster or slower,depends on turbo!!!

CrewCab59