1992 454/4l80e from motorhome swap into K30 ?

[Ned Kelly]

So I see a local 1992 Winnebago 454tbi/4l80e with only 28k miles on it for $1500. No road worthy due to rust and hail damage. Runs well. Might be a good deal.

Instead of getting a Holley Sniper kit...this might be a good donor for a budget friendly upgrade from my current 1985 454/th400?
I'd love to have the 4l80e !!
If I do this swap, I'll go for a divorced np205.
Any swap issues I should be aware of ?
I may need to move quick on this if it is a good runner!

 

[Vombrown]

Are you planning to keep the TBI and wiring harness from the camper? If not you'll need a stand alone computer for the 4l80e, they aren't all that cheap. Somewhere around 4-600.00

 

[kgblazerfive]

Will not need a stand alone just need the wiring from the the Winnie. Will work fine with a divorced unless it is in low then the auto shift part will be off.

 

[Ned Kelly]

I'll use all the wiring from the donor to run the TBI and 4l80e.
Will leave the engine stock.
Are these 454tbi ok for power/torque? I hear mixed thoughts.
My current 454 has a mild RV cam, otherwise stock....so if it is equal to that but with tbi and OD than I'll be happy.

 

[imiceman44]

I'll use all the wiring from the donor to run the TBI and 4l80e.
Will leave the engine stock.
Are these 454tbi ok for power/torque? I hear mixed thoughts.
My current 454 has a mild RV cam, otherwise stock....so if it is equal to that but with tbi and OD than I'll be happy.

I believe so, or I hope so.
I have a 93 from a 4x4 suburban I am going to put in my 74 suburban.

 

[454Sub]

Why not just connect the 80e to the 205?

 

[shady]

The motor home 454s are usually a forged lower end. So that's a win... But 28k on one is usually about equal to 100k on a normal vehicle because that motor WORKS hard. Still should be quite fine though with that low.

 

[sweetk30]

a divorced 205 is o.k. if you have the wheel base length .

and some motor homes got even longer trans with parking brake on the tail . this would shove the divorced 205 back even more .

 

[Ned Kelly]

Yeah, I was thinking of removing the parking brake on the end of the trans (if this had one...not sure yet). I have seen the parking brakes on TH400 from motorhomes but haven't seen a 4l80e yet.
131" wb stock K30. I was going to measure up the space available to check.
I will look into mounting directly to the 4l80e, but I think there was a lot involved. I'll see what the cost vs divorced is.
Long weekend here today...hopefully I can connect with seller...seems he is at the beach right now!

 

[sweetk30]

I did a divorced 205 on a long bed for a guy it worked good .

he had 4speed 2wd and divorced 205 . mounted in the middle for same length front/rear shafts and around 15" middle shaft with slip on shaft .

he also had around 16" of lift on suspension . so 1410 joint shaft were required . and then angle was steep .

 

[RubberFloorMat]

Good plan, you’re gonna want more cam and intake though.