Swapping a 350 in 85 4runner wiring questions

LouisianaToyota · 12-29-2008, 04:02 PM

Just took the 22re out of my 854runner. Putting in a chevy 350. I was wondering if anyone could help me figuring out what wires under the hood I could get rid of? Any help would be greatly appreciated!!

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Adam F · 12-30-2008, 10:25 AM

Carb on the 350?

I just did the same thing.

You can get rid of virtually ALL of the wires coming from the ECU.

I did this, but had to run 3 or 4 new wires.

I ended up having no ignition power. I ran a power wire from the AM1 80 main fuse under the hood to the ignition.

I also ran a toggle switch to a relay, the relay to the HEI distributor coil. Powered the relay from the AM1

I kept the stock starter solenoid wiring intact, so I can turn the truck over with the keyswitch.

I kept the stock wires for the headlights/turn signals, horn, and temp/oil sensors. All of these wires are on a separate harness than what comes out of the ECU.

I ran a new power wire from the battery to the AM1 fuse and to the starter. Ran a new ground cable from the battery to the frame, frame to the block, and frame to the body.

If you have any other questions just ask.

LouisianaToyota · 12-30-2008, 04:29 PM

are you still using the factory in tank fuel pump?

Adam F · 12-31-2008, 08:32 AM

No. Thought about it, but chose against it, for a few reasons.

I'd have to buy a pressure regulator to limit the pressure to 5-7psi for the carb. Regulators are like $75

Then I'd have to wire it up to yet another switch and relay. I already have one switch for the ignition power, and another for the fan power. Dont want another.

Its not really nessisary when you can just use the stock mechanical pump. I see no advantage using an electric pump with a carb on a mild engine.

Plus, I was able to sell the pump for $25

What I did was removed the pump from the bracket, found one of the steel lines (previously the return line I think) that reached the farthest down into the tank, traced that line to the front of the truck, and plumbed that into the carb. My only worry is that, without a fuel sock in the tank, it could pick up debris, but I should be able to see debris in the clear "G2" fuel filter right before the carb.

Ron's 85 · 01-23-2009, 03:24 PM

Quote:

Originally Posted by Adam F

Carb on the 350?

I just did the same thing.

You can get rid of virtually ALL of the wires coming from the ECU.

I did this, but had to run 3 or 4 new wires.

I ended up having no ignition power. I ran a power wire from the AM1 80 main fuse under the hood to the ignition.

I also ran a toggle switch to a relay, the relay to the HEI distributor coil. Powered the relay from the AM1

I kept the stock starter solenoid wiring intact, so I can turn the truck over with the keyswitch.

I kept the stock wires for the headlights/turn signals, horn, and temp/oil sensors. All of these wires are on a separate harness than what comes out of the ECU.

I ran a new power wire from the battery to the AM1 fuse and to the starter. Ran a new ground cable from the battery to the frame, frame to the block, and frame to the body.

If you have any other questions just ask.

how is the tranny holding up to the v8 i just took that out to run a turbo350, i love the b&m ratchet.

Adam F · 01-24-2009, 01:57 AM

I havent had enough time on it yet to say anything. Maybe 100 miles.

It has held up to about 5 burnouts though

It will be fine though. I'm using the R150 V6 transmission, which is the same trans used in the Supra, known to hold up to 600hp.

The 4cy trans will not last though.

Ron's 85 · 01-24-2009, 07:23 PM

Quote:

Originally Posted by Adam F

I havent had enough time on it yet to say anything. Maybe 100 miles.

It has held up to about 5 burnouts though

It will be fine though. I'm using the R150 V6 transmission, which is the same trans used in the Supra, known to hold up to 600hp.

The 4cy trans will not last though.

thats true!! good work buddy!

MaXXis85 · 01-28-2009, 06:01 AM

Any updates on the swap? Looks like I will have to go check it out in person. I am also leanin towards a SBC swap. It will be fuel injected though.

camo31"10.50" · 03-08-2009, 04:40 PM

so im lookin to do this to my '86 ext cab 4x4 DLX pickup..its carb'd..so no ECU and wiring BS...want to put a mid 80's carb'd 350 or 305 chevy on it..i now know i would want to go with a R150F tranny..lol..i would have used my 4cyl tranny..what about stuff like the axles and cv's...are they holdin up good???..how about the frame??? thanks for the info

Adam F · 03-08-2009, 08:58 PM

Keep it mild and go easy on the skinny pedal and you should be OK.

That being said, its VERY hard to keep out of the skinny pedal. I'm already looking into making a tracbar setup to cut back on wheel hop (so I can do some REAL burnouts)

camo31"10.50" · 03-09-2009, 12:52 PM

yea..i love my skinny pedal...lol..but i think..as long as im not hard on it..i'll be ok..thinking maybe a 305 chevy will be a better choice..lol..little less HP...im not looking for a HARDCORE motor..i just want something stock..stock 350 is about 260HP...which is WAYYYY MORE THAN ENOUGH..with that much HP..it'll make that toyota fly down the road no problem at all

Adam F · 03-10-2009, 03:55 PM

260hp stock 350? what vehicle did it come from? that number is pretty high unless its an older musclecar.

Ron's 85 · 03-31-2009, 01:08 PM

does anyone know where my electronic choke should wire to?
hard wire?
or on the keyed ignition on the column?

Adam F · 03-31-2009, 05:34 PM

one wire goes to ground, the other goes to any keyed 12v hot. i used the same wire that goes to my hei distributor.

12-30-2008, 10:25 AM	#2 (permalink)
Adam F Registered User Join Date: May 2002 Location: Cincinnati Ohio Posts: 2,398	Carb on the 350? I just did the same thing. You can get rid of virtually ALL of the wires coming from the ECU. I did this, but had to run 3 or 4 new wires. I ended up having no ignition power. I ran a power wire from the AM1 80 main fuse under the hood to the ignition. I also ran a toggle switch to a relay, the relay to the HEI distributor coil. Powered the relay from the AM1 I kept the stock starter solenoid wiring intact, so I can turn the truck over with the keyswitch. I kept the stock wires for the headlights/turn signals, horn, and temp/oil sensors. All of these wires are on a separate harness than what comes out of the ECU. I ran a new power wire from the battery to the AM1 fuse and to the starter. Ran a new ground cable from the battery to the frame, frame to the block, and frame to the body. If you have any other questions just ask. __________________ 88 4Runner. 350 V8, R150 5-speed. SAS, 36" TSL's, elocker rear Last edited by Adam F; 12-30-2008 at 10:27 AM.

12-31-2008, 08:32 AM	#4 (permalink)
Adam F Registered User Join Date: May 2002 Location: Cincinnati Ohio Posts: 2,398	No. Thought about it, but chose against it, for a few reasons. I'd have to buy a pressure regulator to limit the pressure to 5-7psi for the carb. Regulators are like $75 Then I'd have to wire it up to yet another switch and relay. I already have one switch for the ignition power, and another for the fan power. Dont want another. Its not really nessisary when you can just use the stock mechanical pump. I see no advantage using an electric pump with a carb on a mild engine. Plus, I was able to sell the pump for $25 What I did was removed the pump from the bracket, found one of the steel lines (previously the return line I think) that reached the farthest down into the tank, traced that line to the front of the truck, and plumbed that into the carb. My only worry is that, without a fuel sock in the tank, it could pick up debris, but I should be able to see debris in the clear "G2" fuel filter right before the carb. __________________ 88 4Runner. 350 V8, R150 5-speed. SAS, 36" TSL's, elocker rear Last edited by Adam F; 12-31-2008 at 08:33 AM.

01-24-2009, 01:57 AM	#6 (permalink)
Adam F Registered User Join Date: May 2002 Location: Cincinnati Ohio Posts: 2,398	I havent had enough time on it yet to say anything. Maybe 100 miles. It has held up to about 5 burnouts though It will be fine though. I'm using the R150 V6 transmission, which is the same trans used in the Supra, known to hold up to 600hp. The 4cy trans will not last though. __________________ 88 4Runner. 350 V8, R150 5-speed. SAS, 36" TSL's, elocker rear

01-28-2009, 06:01 AM	#8 (permalink)
MaXXis85 Registered User Join Date: May 2008 Location: Leonville, LA Posts: 11	Any updates on the swap? Looks like I will have to go check it out in person. I am also leanin towards a SBC swap. It will be fuel injected though. __________________ 2005 K2500HD LQ4/80E/263/9.25/10.5/4.10's/285 Buckshots 1989 Toyota Pickup/3VZ-E/R150F/VF1A/8.0 Locked/8.0 Locked/5" SAS/3"BL/38 TSL'S

03-08-2009, 04:40 PM	#9 (permalink)
camo31"10.50" Registered User Join Date: Aug 2007 Location: Vian, OK Posts: 2,081	so im lookin to do this to my '86 ext cab 4x4 DLX pickup..its carb'd..so no ECU and wiring BS...want to put a mid 80's carb'd 350 or 305 chevy on it..i now know i would want to go with a R150F tranny..lol..i would have used my 4cyl tranny..what about stuff like the axles and cv's...are they holdin up good???..how about the frame??? thanks for the info __________________ FOR SALE 1986 Ext. Cab 4x4, rebuilt 22R, 5spd, 31x10.50 X-Terrains FOR SALE 1992 SR5 FO RUNNA V6, 5 speed, 4in. trail-master lift, 33x12.50 BFG muds, 4.56 gears!!! and an IMMACULATE interior..yes..you should be jealous "Its still a toyota man.. Dont deprive it of its capabilities.." "If you can read english, Thank a teacher...If you can speak it, Thank a soldier!!" Kelli Ruark-2009

12-30-2008, 04:29 PM	#3 (permalink)
LouisianaToyota Registered User Join Date: Aug 2008 Location: Opelousas,Louisiana Posts: 4	are you still using the factory in tank fuel pump?

03-08-2009, 08:58 PM	#10 (permalink)
Adam F Registered User Join Date: May 2002 Location: Cincinnati Ohio Posts: 2,398	Keep it mild and go easy on the skinny pedal and you should be OK. That being said, its VERY hard to keep out of the skinny pedal. I'm already looking into making a tracbar setup to cut back on wheel hop (so I can do some REAL burnouts) __________________ 88 4Runner. 350 V8, R150 5-speed. SAS, 36" TSL's, elocker rear Last edited by Adam F; 03-08-2009 at 08:59 PM.

03-09-2009, 12:52 PM	#11 (permalink)
camo31"10.50" Registered User Join Date: Aug 2007 Location: Vian, OK Posts: 2,081	yea..i love my skinny pedal...lol..but i think..as long as im not hard on it..i'll be ok..thinking maybe a 305 chevy will be a better choice..lol..little less HP...im not looking for a HARDCORE motor..i just want something stock..stock 350 is about 260HP...which is WAYYYY MORE THAN ENOUGH..with that much HP..it'll make that toyota fly down the road no problem at all __________________ FOR SALE 1986 Ext. Cab 4x4, rebuilt 22R, 5spd, 31x10.50 X-Terrains FOR SALE 1992 SR5 FO RUNNA V6, 5 speed, 4in. trail-master lift, 33x12.50 BFG muds, 4.56 gears!!! and an IMMACULATE interior..yes..you should be jealous "Its still a toyota man.. Dont deprive it of its capabilities.." "If you can read english, Thank a teacher...If you can speak it, Thank a soldier!!" Kelli Ruark-2009

03-10-2009, 03:55 PM	#12 (permalink)
Adam F Registered User Join Date: May 2002 Location: Cincinnati Ohio Posts: 2,398	260hp stock 350? what vehicle did it come from? that number is pretty high unless its an older musclecar. __________________ 88 4Runner. 350 V8, R150 5-speed. SAS, 36" TSL's, elocker rear

03-31-2009, 01:08 PM	#13 (permalink)
Ron's 85 Registered User Join Date: Jan 2009 Location: bellingham,wa Posts: 218	does anyone know where my electronic choke should wire to? hard wire? or on the keyed ignition on the column?

03-31-2009, 05:34 PM	#14 (permalink)
Adam F Registered User Join Date: May 2002 Location: Cincinnati Ohio Posts: 2,398	one wire goes to ground, the other goes to any keyed 12v hot. i used the same wire that goes to my hei distributor. __________________ 88 4Runner. 350 V8, R150 5-speed. SAS, 36" TSL's, elocker rear

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