454 swap for 6cyl questions?

[samseye]

I have a stock straight 6 cyl 1984 1/2 ton swb with 700r4.

I just bought a 454 BB out of a 1986 Suburban.

Engine comes with all brackets and accessories.

Only part missing is the flywheel.

I will be attempting my swap in a few weeks and figure I could go ahead and start getting parts together now.

1) Any issues using the 700r4 with the 454?

2) I am sure I need to get the larger radiator.  But what other parts will I need.

3) Wiring, fuel lines, motor mounts...any issues there?

4) Exhaust...obviously can't use the old set up.  I am in Ohio and no longer have E checks...but you never know... they may come back.  Any advice on where to go to as far as kits?  How much trouble does a guy get into for not putting the cat system back on?  Engine has stock exhaust manifolds.

Thanks for the help!
David

[Blazin]

The stall speed in the torque converter I would imagine is diferent from the 250 to the 454.
The 6 wiring harnes will work but might need a bit of mods. Your best bet would be get an engine harnes from an 84 V8 truck. They plug right into the fuse box after you remove the one bolt right in the middle of it on the engine side.
You can buy high flow aftermarket cats for duals. I would look into them if you are concerned about that.

[samseye]

Sounds like with the engine harness, motor mounts, torque converter and radiator...no major surprises.
Everything should fit!

Will a manifold back kit for an older truck with out cats bolt right up or are there major changes underneath?

Thanks!
David

[Blazin]

They are all pretty much the same underneath except 2 wheel drive & 4 wheel drive.