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Amigo Engine Swap #859567 01/13/08 02:39 AM
Joined: Jan 2008
Posts: 2
S
slotcarjunkie Offline OP
Need a Spot
I have a stock 1994 Amigo 4x4. Im considering lifting it and putting it on some meatier tires soon but I'm not sure the 2.6L will handle the extra weight and whatnot.

Recently I aquired a 1989 Buick Park Avenue with a 3.8L V6. The engine needs a bit of routine work but unfortunately (well, forunately for me!) it blew a freeze plug from sitting. Its the FWD version.

I was wondering if it would be worth swapping the 3.8L into the Amigo, and if there was anything I would need to watch out for. From what I understand, it will bolt up to a 60* bell housing, but will my whole tranny/transfer need to be swapped as well? I would much prefer to keep the truck a stick.

Ive been searching for a few weeks but havent really found much of a definative answer. Mostly undocumented swaps or swaps of other engines. Thanks for your help..

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Re: Amigo Engine Swap [Re: slotcarjunkie] #859568 01/13/08 02:47 AM
Joined: May 2002
Posts: 1,541
jezeric Offline
Isuzu Moderator
Anything other than another 2.6, or the 2.3, will need a transmission/transfer case swap. These motors had a different bellhousing and bolt pattern than the GM sourced 2.8/3.1 engines that were used in some Isuzus. I'm sure you can come up with a manual trans for your swap, if you want to search for it, but you're looking at more than just a motor change here.

James

Re: Amigo Engine Swap [Re: jezeric] #859569 01/13/08 03:06 AM
Joined: Jan 2008
Posts: 2
S
slotcarjunkie Offline OP
Need a Spot
Well that answers that question pretty definatively, Thanks!

One more question then, will the 2.6L pull 32x12.5 or 33x12.5 Destination M/T's or Swampers without bogging down too badly? It has to stay road worthy for now but I dont have the money to find a trans/transfer.

Last edited by slotcarjunkie; 01/13/08 03:09 AM.
Re: Amigo Engine Swap [Re: slotcarjunkie] #859570 01/13/08 05:11 AM
Joined: Jan 2000
Posts: 2,437
lttlbddy Offline
Body Damage is Cool
32s or 33s are pretty doable. You will lose a bit on hills and with headwinds. Offroad, the gearing is marginal even with the 31s but still okay with 33s, you just use a little more clutch.

Re: Amigo Engine Swap [Re: slotcarjunkie] #859571 01/13/08 08:18 AM
Joined: Apr 2003
Posts: 898
litnin Offline
Rock Warrior
You could always sell the one you have and buy a late model
Amigo/Rodeo Sport that already has a 3.2 V6 in it.


1995 Trooper LS auto 3.2 DOHC /w SOHC intake
1989 Trooper 2.6 auto
1989 I-Mark RS DOHC 1.6
1991 Stylus XS DOHC 1.8
Re: Amigo Engine Swap [Re: slotcarjunkie] #859572 01/14/08 12:12 AM
Joined: Sep 2003
Posts: 1,214
J
JLEMOND Offline
Body Damage is Cool
THERE IS A WAY TO BOLT THE BUICK RIGHT UP TO THE AMIEGO TRANS BUT IT WILL TAKE A BIT OF SEARCHING, , FIRST YOU WILL HAVE TO HAVE THE FRT BELL HOUSING OR FRT CASE FROM AN 89-91 TROOPER THAT HAD A 2.8 TRANS OR A 90-92 ONLY 3.1 RODEO, OR GET THE WHOLE TRANS, IF IT IS IN GOOD SHAPE , THESE TRANNY WILL BOLT RIGHT UP TO THE BUICK ENG, AND THEY HAVE THE SMALL DIA INPUT SHAFT FOR THE CRANKSHAFT INPUT , YOU CAN USE YOUR TRANS WITH THE EARLY BELLHOUSING, BUT THEN YOU ARE GOING TO HAVE TO MAKE A SPECIAL INPUT BEARING FOR THE 4 CYL INPUT SHAFT, IT IS LARGER THAN THE ONES ON THE SMALL V6,S, THE EARLY TRANS WILL BOLT RIGHT IN TO THE SAME SPOT AS YOUR CURRENT TRAN YOU WILL HAVE TO SOURCE THE SMALL SPLINE CLUTCH DISC AND FIND A MATING PRESSURE PLATE TO FIT THE BUICK ENG FLYWHEEL , YOU CANNOT USE THE LATER V6 TRANS, THEY HAVE A MODIFIED 60 DEGREE BOLT PATTERN WHICH IS SLIGHTLY LARGER THAN THE STANDARD 60 DEGREE PATTERN, THE BUICK USE THE SAME PATTERN AS ALL THE ISUZU AUTOMATIC TRANS USED CLEAR THRU 2002, WHICH IS THE STANDARD GM 60 DEG, HOWEVER THE ISUZU V6 MANUAL TRANS USED A SLIGHTLY WIDER BOLT CIRCLE ON THE ENG , SOME OF THE BOLTS WILL LINE RIGHT UP, THERE ARE TWO BOLT PATTERNS ON THE ISUZU V6 ENG . JERRY

Re: Amigo Engine Swap [Re: JLEMOND] #859573 01/14/08 11:12 PM
Joined: Jul 2001
Posts: 1,810
paulevans76 Offline
Body Damage is Cool
so a buick 3.8 will bolt to a 60* chevy pattern MUA5? how come this is the first I've heard of this?!



(ps my first car was a 90 bonneville w/ the 3.8 and that thing barreled down the road. i loved that engine!)


88 Troop - Posing yard art
Re: Amigo Engine Swap [Re: paulevans76] #859574 01/15/08 03:39 AM
Joined: Sep 2003
Posts: 1,214
J
JLEMOND Offline
Body Damage is Cool
IF IT IS THE SAME 60 DEG PATTERN THAT THE CADDY AND THE 3.1 AND ALL THE OTHER GM ENGS USE IT SHOULD BOLT RIGHT ON,TO MY KNOWLEDGE NO OTHER GM ENG USES THE MODIFIED 60 DEGREE PATTERN THAT THE LATE ISUZU V6 ENGS USE, JERRY








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