454 and manual swap into 1984 Chevy k10


Asked by Apr 08, 2015 at 11:03 PM about the 1984 Chevrolet C/K 10

Question type: Car Customization

As stated, an 84' k10 with a 305, th400 and np208 t-case. I'd like to swap a 454 in, and
since its apart, add a manual as well. This is a restoration project / toy that I intend to
make a great truck and an even better learning experience. I'm torn between the fairly
common sm465 muncie, and an nv4500 5speed. The engine I'm hoping to buy is out
of an 86' 1 ton, and it has a 2wd 465 (un-usable I think since its 2wd) I've heard the
454 isn't hard, but what about the manual swap? Is a 90's 5speed compatible with an
older 454? what work is needed to add it? Anyone who can give me some advice
would be a hero at this point. I have a slight feeling that I could use all the 86's parts,
except the transmission? Or is it a different set up completely? Thanks!

1 Answer

James Kitlas

It's possible but very difficult & with 454 engine mounts & manual trans linkage & clutch parts like clutch peddle mounts, trans cross member, clutch fork & clutch fork frame mounts & clutch linkage, & probably a different length drive shaft? A same model doner truck is needed to forgo all the "welded-in" parts you would have to buy. Swap the motor & stay with the stout TH400 with a stall speed convertor, & HD valve body, & save some headaches, fustration, & $$$$'s.

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