Ok, so my 2000 K2500 454 has spun a main and or rod bearing. Don’t have the tools to do a rebuild. Found lots of Gen 5 454 motors for 600-1200 but can’t find any Gen 6 around me. So main question, can I used a G5 engine in place of my G6? What’s the difference between the two? I’ve heard cam’s are different. And a few other things. But what would I need to change on the G5 to work like my G6. This would be a temporary swap while I get the tools and parts to rebuild the G6. Thanks all.
Greetings 00CrewCab,
I've got a little different take on your situation. If you compartmentalize this
temporary swap
the right way, and play your cards right, you may well be able to get a free ride out of a
'less desirable' Gen V motor while your Gen VI motor it out for repairs.
Thumbnail sketch:
1) Source the most promising yet affordable Gen V motor.
2) Pull your Gen VI engine out. Remove the intake manifold, sensors, etc.
3) Remove the intake manifold from the Gen V motor. (Bag the Gen V
intake & stash it for temporary safe keeping.) Swap YOUR Gen VI
intake onto the Gen V engine. Stuff this Gen V/VI hybrid into your truck,
hook it all back up, drive it.
4)
Now you can fix your Gen VI motor -- you can now renew an engine
that was originally built with all the good bits. This way you avoid trying
to update/re-engineer the desirable Gen VI bits onto the Gen V motor.
(ie: Keeping your Gen VI rebuild as simple & straightforward as possible.)
5) Once your engine is completely rebuilt, reverse steps #3 & #2 above.
BONUS: *Before* you remove the Gen V motor, put it up for sale as a
"Listen/drive before buying". Make it clear to the potential buyer that
you are selling a running long block
except that you are keeping the
intake & associated sensors. But you have all the
original Gen V intake
bits to go along with the motor that's for sale.
I know that if I'm in the market for a used engine and I can actually hear it,
drive it, and see the oil pressure & water temps *before* I buy it, then I
would be willing to pay more for it than a rebuildable core out of the
Treasure Yard.
****
If you do this right, then by treating the Gen V motor as a
temporary
'Black Box' workaround you can avoid getting tangled up in the Gen V
vs Gen VI stuff. (I'm pretty sure that using your Gen VI intake on
the peanut port Gen V heads is not a problem? Others with firsthand
knowledge please chime in?)
In English, if you really did this right, you would be able to get your
money back out of the Gen V temp motor, while at the same time
giving you something to drive while working through your 1st big
block rebuild. (Which I highly recommend.) Extra work? Sure.
Personally I'd view it as extra experience. But it would also give
me a temporary free ride, more or less.
It would make a great build thread -- all of the BBC enthusiasts
would be hanging over your virtual shoulder asking for lots of
pictures & sharing their hard-won experience...