New Member 1988 Grand Wagoneer 350 swap

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badbrains
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New Member 1988 Grand Wagoneer 350 swap

Post by badbrains » Mon Apr 08, 2019 5:34 pm

Hello all. I am new to this site but not new to wagoneers (Have owned 3 between me and my wife) . I purchased my current one with only 73,000 original miles. No rust and very nice garage kept condition. It was running great untill the rear main seal gave up and found out the block was missing a small piece that hodls the seal in place. I just pulled the engine and am thinking about a roller 5.7 crate motor with Holley sniper fuel injection. I dont really want to go through the process of doing a 5.3 swap . My tranny and transfer case seems good . I am building a grocery getter for the wife. She loves these trucks. Does anyone have any input or advice on this ?

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Stuka
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Re: New Member 1988 Grand Wagoneer 350 swap

Post by Stuka » Tue Apr 09, 2019 10:07 am

Adapter plates are available for bolting a SBC to the AMC 727. But I am not sure if they work on Vortec engines. You would need to call Novak and ask them, they would know best. You can also buy engine mount adapters for a SBC. But as I recall Vortec blocks used different mounts. And well, I guess I am assuming the roller crate engine is vortec based. But I know there are many companies that offer different blocks for different applications. No doubt you can find one that makes for an easier swap.

Otherwise your plan should work fine.
1981 J10 AMC 258 with HEI and Weber 32/36 DGEV Carb, T176, NP208, D44/M23 with 4.56 gears and Detroit Locker, 6" lift, 33x12.50 Cooper STT's, BJ's Offroad Rear Dozer Bumper.
2017 JKU Rubicon Lifted and stuff
Pevious Jeeps: 1975 Cherokee, 2008 JK, 2005 KJ, 1989 XJ

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derf
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Re: New Member 1988 Grand Wagoneer 350 swap

Post by derf » Tue Apr 09, 2019 10:24 am

The transmission mount for a chevy is the same between a vortec and pre-vortec small block. The vortec just did changes internal to the engine/heads. The transmission mounting surface and flywheel didn't change (outside of dealing with internal or external balance engines which chevy switched between over the years).

Adapting a GM engine to an AMC transmission bellhousing is a matter of getting the adapter ring and flywheel from a place like Novak or Advance Adapters. Getting the starter lined up right is probably the most complicated part.

Motor mounts are easy to find. Getting the kickdown linkage on the transmission set up is straightforward if a little involved.

Routing the exhaust can be an adventure but any competent exhaust shop can fab up what you need.


Topic author
badbrains
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Location: Wilmington North Carolina

Re: New Member 1988 Grand Wagoneer 350 swap

Post by badbrains » Sun Apr 28, 2019 6:36 pm

Update on build. I found a new 5.7 crate motor Vortec heads and all new pulleys serpentine setup . I have it on engine stand now with a new aluminum Weiand intake ,Holley sniper fuel injection and a Holley sniper plug and play distributor. Adaptor for the Chevy to 727 and motor mounts will be here tomorrow. I have the engine bay cleaned up and doing all new body mounts now. I had to go to my machine shop and bring home the plasma cutter and mig welder to get to the nuts to remove the body bolts. Not fun but totally needed. I will start dropping the gas tank soon.


SJTD
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Re: New Member 1988 Grand Wagoneer 350 swap

Post by SJTD » Sun Apr 28, 2019 8:16 pm

I used a hole saw through the floor then drilled through the bolts. From the forming process the bolts were concave on the end so it centered the drill. After drilling out to close to the root diameter of the threads they unscrewed.
Sic friatur crustulum

'84 GW with Nissan SD33T, early Chev NV4500, 300, narrowed Ford reverse 44, narrowed Ford 60, SOA/reversed shackle in fornt, lowered mount/flipped shackle in rear.


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badbrains
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Location: Wilmington North Carolina

Re: New Member 1988 Grand Wagoneer 350 swap

Post by badbrains » Thu May 02, 2019 6:05 pm

Just removed the gas tank today. Came out way easier than I expected. No rust and all bolts gave up with no problems. I am about to run a 3/8 stainless fuel return line from tank to the new Holley sniper fuel injection. Does anyone know where to install the bulkhead fitting? There are two lines on top of the sending unit and two other lines that may be a vent and possibly some emissions line . There is also a line coming off the top of transmission that I would like to know what is does and can I just plug it off.


SJTD
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Re: New Member 1988 Grand Wagoneer 350 swap

Post by SJTD » Thu May 02, 2019 9:44 pm

Vent line on the trans? If so don't plug it.
Sic friatur crustulum

'84 GW with Nissan SD33T, early Chev NV4500, 300, narrowed Ford reverse 44, narrowed Ford 60, SOA/reversed shackle in fornt, lowered mount/flipped shackle in rear.


Topic author
badbrains
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Location: Wilmington North Carolina

Re: New Member 1988 Grand Wagoneer 350 swap

Post by badbrains » Sat May 04, 2019 8:03 pm

Working on installing new body mounts. This job is a pita! I had to break out the plasma cutter, welder , sawzall , die grinder and several other tools of destruction. I got one side done today . Turned out great . This job is not for someone that gives up quickly!


acct21
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Re: New Member 1988 Grand Wagoneer 350 swap

Post by acct21 » Tue May 07, 2019 7:06 pm

One of the lines on the sending unit (the larger one) is the feed. The smaller is the return. It will be 1/4" -- so some have used a small cutoff wheel/die grinder to take that line off the top of the sender, and drill it out for a larger fitting.

The other two lines on top of your tank are both rollover valve/vents. They are identical. Replace them (and the grommets) while you have the tank down.

If you are replacing your sender, make sure you extend the pickup tube to the bottom of the tank. The newer aftermarket senders have pickup tubes that are about 2" shorter than OEM.

What are you doing for the feed? The sender is a 5/16" line.
1990 GW with HD towing package -- everything works! (today, anyway)


Topic author
badbrains
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Joined: Mon Apr 08, 2019 5:20 pm
Location: Wilmington North Carolina

Re: New Member 1988 Grand Wagoneer 350 swap

Post by badbrains » Sun May 12, 2019 7:09 am

I have not gotten that far yet. I appreciate your posting that information. I have restored many vehicles but this is the first time I have done a fuel injection swap. I will replace the fuel sender and take your advise on the extended line and cutting the small line and replacing with a bulkhead fitting for the return. Do I need to keep the charcoal canister?


acct21
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Re: New Member 1988 Grand Wagoneer 350 swap

Post by acct21 » Mon May 13, 2019 8:36 am

I kept my charcoal canister when I installed my Sniper -- only because it (and all the lines) were new and functioning. I have it plumbed exactly as before (minus the bowl vent line). Have plans to install a solenoid off a later GM system to trigger the purge on the canister once it's warmed up (controlled by the EFI).

Since the gas tank vents through the canister, it really cuts down on the gas smell coming from under the hood.
1990 GW with HD towing package -- everything works! (today, anyway)


Topic author
badbrains
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Location: Wilmington North Carolina

Re: New Member 1988 Grand Wagoneer 350 swap

Post by badbrains » Tue May 14, 2019 6:10 pm

That’s a good reason to keep it . Mine is original and only 76xxx miles so I hope it’s still ok but it is from 1988 !


Fred03
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Re: New Member 1988 Grand Wagoneer 350 swap

Post by Fred03 » Thu May 16, 2019 5:29 pm

acct21 wrote:I kept my charcoal canister when I installed my Sniper -- only because it (and all the lines) were new and functioning. I have it plumbed exactly as before (minus the bowl vent line). Have plans to install a solenoid off a later GM system to trigger the purge on the canister once it's warmed up (controlled by the EFI).
transfers Dieppe
Since the gas tank vents through the canister, it really cuts down on the gas smell coming from under the hood.
I though thtah you're right


acct21
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Joined: Sun Jan 05, 2014 1:32 pm

Re: New Member 1988 Grand Wagoneer 350 swap

Post by acct21 » Thu May 16, 2019 7:13 pm

Mine is original and only 76xxx miles so I hope it’s still ok but it is from 1988 !
Lots of options out there if yours isn't any good. Mine's off an early 80s GM.
1990 GW with HD towing package -- everything works! (today, anyway)


Topic author
badbrains
Posts: 11
Joined: Mon Apr 08, 2019 5:20 pm
Location: Wilmington North Carolina

Re: New Member 1988 Grand Wagoneer 350 swap

Post by badbrains » Mon Sep 02, 2019 5:31 pm

I am back on the 350 VORTEC Sniper efi swap. Just got the engine put in and all bolted up to NOVAK adaptors. Worked out great so far. Next step is installing an intank fuel pump with 3/8 feed and return lines. I read on here someone mentioned Novak has a drop in unit ,pump and sender in one that requires no mods to the tank. Anyone have experience with that unit?

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