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#2377986 - 09/27/17 08:10 PM engine swap v8 to v6 truck
gch Offline
master

Registered: 03/06/05
Posts: 3013
Loc: Central NC
I can get a very nice 89 short bed truck with a 3.9 manual trans.What would be any hurdles to swapping the 360 out of my 87 long bed automatic truck?
Will the manual trans bolt up?
Any other issues?

Thanks.

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#2378022 - 09/27/17 09:33 PM Re: engine swap v8 to v6 truck [Re: gch]
Satilite73 Offline
I Live Here

Registered: 01/19/03
Posts: 12563
Loc: Between Houston & Galveston TX

Are you trying to make a slow truck? 3.9's get about the same MPG as a 5.2.

Also, it's getting to the point even stock replacement parts for the 3.9 are drying up.

twocents
_________________________
John




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#2378158 - 09/28/17 07:37 AM Re: engine swap v8 to v6 truck [Re: Satilite73]
Soopernaut Offline
top fuel

Registered: 12/13/07
Posts: 2095
Loc: Des Moines IA
Originally Posted By Satilite73

Are you trying to make a slow truck? 3.9's get about the same MPG as a 5.2.

Also, it's getting to the point even stock replacement parts for the 3.9 are drying up.

twocents


He wants to go the other way, 3.9L to 5.9L.
_________________________
1970 Dodge d100/eventually going on a 77 D100 frame

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#2378315 - 09/28/17 01:20 PM Re: engine swap v8 to v6 truck [Re: gch]
basketcase Offline
master

Registered: 09/03/03
Posts: 6886
Loc: east side of Ohio
i swapped the V6 5 speed from in my '88 to the 318 auto from my '87. The drivers side motor mount had to be fabbed, and one of the trans cross member bolt hole didn't line up. And since I was going from a manual to automatic, I swapped the steering columns, which required the dash harness as well since the '88 had the dimmer and wipers on the turn signal switch.
_________________________
Dave


1969 Plymouth road runner post 383 4 speed F8
1981 Dodge D150 360 auto

1991.5 W250 Cummins auto for sale

https://uniim1.shutterfly.com/ng/service...4273142/enhance

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#2378610 - 09/28/17 11:09 PM Re: engine swap v8 to v6 truck [Re: gch]
poorboy Offline
master

Registered: 01/19/03
Posts: 6256
Loc: Freeport IL USA
The 3.9 manual trans stuff will bolt up to the 360, but the flywheel won't have the offset balance the 360 requires. You will need a 360 flywheel. All the other manual trans stuff should work. Do you know which manual trans is in the 89 truck?

There may be wiring/computer issues you will have to deal with, an 89 could tbi or carb. Gene

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#2378612 - 09/28/17 11:09 PM Re: engine swap v8 to v6 truck [Re: Soopernaut]
Satilite73 Offline
I Live Here

Registered: 01/19/03
Posts: 12563
Loc: Between Houston & Galveston TX
Originally Posted By Soopernaut
Originally Posted By Satilite73

Are you trying to make a slow truck? 3.9's get about the same MPG as a 5.2.

Also, it's getting to the point even stock replacement parts for the 3.9 are drying up.

twocents


He wants to go the other way, 3.9L to 5.9L.


I saw the subject line V8 to V6.......

I got it now..... blush laugh2
_________________________
John




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#2379209 - 09/30/17 08:19 AM Re: engine swap v8 to v6 truck [Re: Satilite73]
SteveS Offline
top fuel

Registered: 02/26/06
Posts: 2254
Loc: Groveland, MA
Originally Posted By Satilite73
Originally Posted By Soopernaut
Originally Posted By Satilite73

Are you trying to make a slow truck? 3.9's get about the same MPG as a 5.2.

Also, it's getting to the point even stock replacement parts for the 3.9 are drying up.

twocents


He wants to go the other way, 3.9L to 5.9L.


I saw the subject line V8 to V6.......

I got it now..... blush laugh2


Me, too.
_________________________
Steve

Someday I'll have another C-body.

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