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***sale pending***

TBI 350 SM420 LC 3spd combo for sale

I will be selling the drivetrain that is currently in the 45 after the swap in the coming month.

It is a 1990 GM 5.7 TBI unit stock ECU and harness...........unknown miles
Replaced a bunch of top end parts two summers ago that included
dizzy, ecm, coil, plugs/wires, intake gaskets, rebuilt carb diaphragm, new injectors, new fuel pump/filter, and a few other items when it was a bum fuel pump the whole time. motor runs and drives fine and starts everytime. I am swapping because it does leak some oil and it has a small knock of unknown origin. It hasnt seemed to affect performance and has persisted for over a year not getting worse, just saying in effort of full disclosure. I dont care to be 2+ hrs from home with wavering confidence in the rig though it performs without a hitch each time...................plus the TBI wouldnt take a cam for mo powa :D


The transmission is a SM 420..... some stupid 7.1 : 1 low range if anyone is looking for a drop in option for deeper gearing on a trail rig. It is essentially a 3spd with a granny low and a reverse. IT drives and shifts well without issue..... no popping out of 4th like they will when worn. It is bolted to a unknown year 3 speed case with an advance adapters plate style adapter. The input seal to the tcase is compromised so the two to share oil. The easy fix is the drain back tube written up well in 40s tech or you could replace the seal with much more work. I simply check it once a month and drain any excess from trans and add fresh to tcase.


this would be a perfect drop in combo for a trail truck that sees occasional use. Would find its way to the pig in a heartbeat if it was still around. I wouldnt even try and freshen it up much if it was a rig that was used a dozen times a year......just top of and go. However its got no happy home around here so it needs to go

$500 each or $900 for the whole package
 
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I'm in for at least the trans and Tcase. Give me a call 864-992-0990
-Jim
 
Dawn that was fast. Would love to have the motor but not man enough to ask.
 
I would like the motor, gotta see what's involved in the swap.
 
TBI 350 SM420 LC 3spd combo for sale

I will be selling the drivetrain that is currently in the 45 after the swap in the coming month.

It is a 1990 GM 5.7 TBI unit stock ECU and harness...........unknown miles
Replaced a bunch of top end parts two summers ago that included
dizzy, ecm, coil, plugs/wires, intake gaskets, rebuilt carb diaphragm, new injectors, new fuel pump/filter, and a few other items when it was a bum fuel pump the whole time. motor runs and drives fine and starts everytime. I am swapping because it does leak some oil and it has a small knock of unknown origin. It hasnt seemed to affect performance and has persisted for over a year not getting worse, just saying in effort of full disclosure. I dont care to be 2+ hrs from home with wavering confidence in the rig though it performs without a hitch each time...................plus the TBI wouldnt take a cam for mo powa :D


The transmission is a SM 420..... some stupid 7.1 : 1 low range if anyone is looking for a drop in option for deeper gearing on a trail rig. It is essentially a 3spd with a granny low and a reverse. IT drives and shifts well without issue..... no popping out of 4th like they will when worn. It is bolted to a unknown year 3 speed case with an advance adapters plate style adapter. The input seal to the tcase is compromised so the two to share oil. The easy fix is the drain back tube written up well in 40s tech or you could replace the seal with much more work. I simply check it once a month and drain any excess from trans and add fresh to tcase.


this would be a perfect drop in combo for a trail truck that sees occasional use. Would find its way to the pig in a heartbeat if it was still around. I wouldnt even try and freshen it up much if it was a rig that was used a dozen times a year......just top of and go. However its got no happy home around here so it needs to go

$500 each or $900 for the whole package

Inquiring minds want to know what is getting dropped in place of this :hhmm:
 
Who is Dawn.... and that was fast. Maybe I shoulda inquired what they were worth first :lol: Ill give you a shout this eve Jim

Motor swap isnt too terrible. motor and trans mounts, driveshaft length alteration, some misc
but I didnt do it, came that way so am making it sound a bit easy..........

and nothing fun going in its place unless you got something hidden youd part with

just another SBC , old school 72 vintage carb'd version this time to keep me safe from the EMPs. New gaskets and seals with mild cam in front of a SM465

would love a 5spd so speak up if you see any deals around but this whole thing was a budget swap initially however I could be tempted. Shoulda bought the ranger Jim picked up. Half tempted to mate it to a H42 for driveability but the adapter makes it impractical and the parts alone on a nv4500 setup arent in the cards. This will work for a few years till im ready to swap motors or chasis one :D
 
If you don't have your sm465 stuff yet, I have all the stuff maybe we can work out some kind of deal.
 
I even have a good 4 bolt main 350
 
Look for Scepter (plastic) or NATO (cam lid) cans. On any metal cans look for rust inside. Any rust = no bueno. On the Scepters make sure the gasket retaining edging is still in place and not broken off.

Agreed that style tend to leak alot from what I have heard. As a can around the house they might be OK, but not too sure.
 
Agreed that style tend to leak alot from what I have heard. As a can around the house they might be OK, but not too sure.

You still have age and therefore rust issues, and still need to pour gas no matter where you are, unless you use a funnel, so home or not I would avoid them. There are better options. How many GI cans do you see in use versus for sale?
 

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