chevy 4.3 in a 87 runner

94toy4x4fever · 08-03-2009, 08:27 PM

Ok so I have been thinking about this swap for a few years now and I want to do it but there are still alot of quesions I have! I have searched for hours and havent realy figured stuff out! One thing that Im still wanting to know is wireing this thing! I want to keep all my stock guages! SO what all do i need to do to keep them! I know I want to run a 4.3 vortech so I will need the computer for it and dont know how I will work in the stock stuff also! Any info would be great!

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86toylet · 08-04-2009, 04:56 AM

You will need to put your temp, and oil sensors onto the new engine. The rest is fairly easy. Since the Toyota gets its speedo from the t-case, thats not an issue. Let me know which motor you will be using and I'll get the wiring out to you (PM please). The 4.3 needs about 5 wires to run and about 12-15 wires for guages and other crap. Make sure you get the ECU, Harness, and ALL smog equipment (including canister, O2's and exhaust). The 87 fuel pump is adequate.

Where are you located (smog reasons) ?
Will you be using the Toyota Tranny or GM ?

94toy4x4fever · 08-04-2009, 01:25 PM

im in Idaho so there is no smog laws here! I will be running the toyota 5speed for now! So I will have to splice in wire to retain my stock guages? Hey thanks for the info man!

86toylet · 08-04-2009, 03:33 PM

No splicing, you will just retain your current wires, from guages to sensors. You will have to remove the sensors from the Toyota engine and put them on the 4.3. I tapped my thermo housing for temperature, and put the oil sensor onto my 4.3 block.

94toy4x4fever · 08-04-2009, 05:02 PM

Whats the best year of engine to use? I can get some engines with 50-70k for fairly cheep!

86toylet · 08-05-2009, 04:47 AM

The 4.3 TPI Vortec, is the best. I believe 96+ are the best years. I run a 1992 CPI, which is also a good motor, but has a fixable problem with the regulator.

94toy4x4fever · 08-05-2009, 05:12 PM

is there any clearence issues with a ifs? I have a 4inch lift on it now and will be doing a sas some time down the road

86toylet · 08-06-2009, 06:01 AM

I don't have IFS, so I don't know, but I imagine you will need body lift.

94toy4x4fever · 08-06-2009, 09:15 PM

Hey thanks for all the help! After I swap in my 5 speed I will talk with you some more about this swap!

desertcamper67 · 08-06-2009, 09:34 PM

Thats a bunch of great info. I have been considering (dreaming about) doing this swap for years and it sounds like its not too much trouble. And 86toylet I believe you know your stuff on that subject.
I believe I read in 4WD and Sport Ute that there was a significant increase in horsepower and torque inthe early to mid 90's. Do you know what year and which models were commonly using this motor? Just S-10's?

86toylet · 08-07-2009, 07:25 AM

alot of Astro's used the motor. I got mine from a 2wd S-10 Blazer. There is a considerable difference in power and torque between the TBI and CPI/TPI. The CPI and TPI make around 35+ more HP than the TBI. A buddy of mine just dyno'd his TPI, and its making 240 HP bone stock.

86toylet · 08-07-2009, 08:39 AM

4.3 LITER, 262 CID
YEAR MAKE MODEL
85, 87-90,
92-93 Chevrolet Caprice
85-87 Chevrolet El Camino
85 Chevrolet Impala
85, 87-88 Chevrolet Monte Carlo
87 Pontiac Grand Prix
85 Pontiac Parisienne
05 Chevrolet Blazer ST
94-95 Chevrolet/GMC Blazer/Jimmy ST
90-93, 97-99 Chevrolet/GMC Chassis 1-ton P
88 Chevrolet/GMC Full-size 1-ton CK
85, 88-02 Chevrolet/GMC Full-size 1/2-ton CK
87-88 Chevrolet/GMC Full-size 1/2-ton RV
85 Chevrolet/GMC Full-size 3/4-ton C 2WD
88-95 Chevrolet/GMC Full-size 3/4-ton CK
87-88 Chevrolet/GMC Full-size 3/4-ton R 2WD
88-02 Chevrolet/GMC S10/S15 ST
87-95 Chevrolet/GMC Van 1-ton G
97-00 Chevrolet/GMC Van 1-ton Express/Savana G
85, 87-95 Chevrolet/GMC Van 1/2-ton G
99-00 Chevrolet/GMC Van 1/2-ton Express/Savana G
01-02 Chevrolet/GMC Van 1/2-ton Cargo Express/Savana
01-02 Chevrolet/GMC Van 1/2-ton Passenger Express/Savana
85, 87-95 Chevrolet/GMC Van 3/4-ton G
97-00 Chevrolet/GMC Van 3/4-ton Express/Savana G
01-02 Chevrolet/GMC Van 3/4-ton Cargo Express/Savana
01-02 Chevrolet/GMC Van 3/4-ton Passenger Express/Savana
90-04 Chevrolet/GMC Van Astro/Safari LM
85 Chevrolet/GMC Van Astro/Safari M 2WD
94-00 Oldsmobile Bravada ST

desertcamper67 · 08-07-2009, 03:14 PM

Daaaaaaaang. Way more common than I thought. Good to know. Thanks for the great list.

Adam F · 08-07-2009, 09:11 PM

I've driven multiple vehicles with the 4.3. The ones that are always the fastest are the Astro/Safari vans. We have a 99 Safari at work that blows the doors off the 96 s-10 with the same 4.3.

94toy4x4fever · 08-07-2009, 10:35 PM

What years was the TPI made? I think thats the one im going to go with! Also I think im just going to try and buy a whole rig and just start swaping stuff over to the 4runner.

86toylet · 08-09-2009, 04:35 AM

TPI's are 1996+ I believe.

Joey Link · 09-14-2009, 04:51 PM

What sort of fuel economy can we expect out of a 1st Gen IFS 4runner with a 4.3 CPI/TPI?

jeffbland · 10-19-2009, 04:38 PM

Quote:

Originally Posted by 86toylet

You will need to put your temp, and oil sensors onto the new engine. The rest is fairly easy. Since the Toyota gets its speedo from the t-case, thats not an issue. Let me know which motor you will be using and I'll get the wiring out to you (PM please). The 4.3 needs about 5 wires to run and about 12-15 wires for guages and other crap. Make sure you get the ECU, Harness, and ALL smog equipment (including canister, O2's and exhaust). The 87 fuel pump is adequate.

Where are you located (smog reasons) ?
Will you be using the Toyota Tranny or GM ?

im in the middle of this swap too (well about 80% done) and i always thought i would need to get a different fuel pump... from your post i understand that i wouldnt need one (89 22re pickup)

86toylet · 10-23-2009, 08:19 AM

I have 36" tires, 4.88 gears, 4.3 CPI, 700R4, I get 15-17 MPG.

Yes a 22RE pump will work for a stock 4.3. You may have to upgrade the size of your fuel lines but the pump is adequate.

jeffbland · 10-23-2009, 01:40 PM

sweet news! thanks for getting back to me

biker1 · 11-15-2009, 04:43 PM

It looks like Idaho is jumping on the 4.3l bandwagon. I am - that is for sure. I have my 91 TBI 4.3l in but am now stumped on quite a few things. They include the Painless #6101 wiring harness, radiator hose routing, serpentine belt set up(s), A/C, Power Steering, Fuel pump, etc. These are the biggies right now. It seems like there is quite a bit of info but lots of it differs.... Any hints or pics you can send my way would be great. I think I will set up a thread with my build so far and hopefully folks who have done the tbi swap can chime in with do's and donts that they know work or doesn't. Thanks in advance.

live4soccer7 · 11-23-2009, 08:32 AM

wouldn't something with around 240hp beat the hell out of the yota's (84-89) frame/structure and drivetrain?

08-04-2009, 01:25 PM	#3 (permalink)
94toy4x4fever Registered User Join Date: Mar 2008 Location: Lewiston, Idaho Posts: 382	im in Idaho so there is no smog laws here! I will be running the toyota 5speed for now! So I will have to splice in wire to retain my stock guages? Hey thanks for the info man! __________________ 94 toyota pickup. 22re w/ RV cam pacesetter header with flowmaster 40 series muffler 31" cooper stt's bedlinner **FOR SALE**^^^^ 87 toyota 4runner. 22re 5 speed swap 33" nokian vatiiva M/T'S 4inch lift trail gear rear bumper and sliders 40 series flowmaster things to do: gears custom front bumper lockers SAS one of these days after the IFS cant take it any more!!!!

08-04-2009, 05:02 PM	#5 (permalink)
94toy4x4fever Registered User Join Date: Mar 2008 Location: Lewiston, Idaho Posts: 382	Whats the best year of engine to use? I can get some engines with 50-70k for fairly cheep! __________________ 94 toyota pickup. 22re w/ RV cam pacesetter header with flowmaster 40 series muffler 31" cooper stt's bedlinner **FOR SALE**^^^^ 87 toyota 4runner. 22re 5 speed swap 33" nokian vatiiva M/T'S 4inch lift trail gear rear bumper and sliders 40 series flowmaster things to do: gears custom front bumper lockers SAS one of these days after the IFS cant take it any more!!!!

08-05-2009, 05:12 PM	#7 (permalink)
94toy4x4fever Registered User Join Date: Mar 2008 Location: Lewiston, Idaho Posts: 382	is there any clearence issues with a ifs? I have a 4inch lift on it now and will be doing a sas some time down the road __________________ 94 toyota pickup. 22re w/ RV cam pacesetter header with flowmaster 40 series muffler 31" cooper stt's bedlinner **FOR SALE**^^^^ 87 toyota 4runner. 22re 5 speed swap 33" nokian vatiiva M/T'S 4inch lift trail gear rear bumper and sliders 40 series flowmaster things to do: gears custom front bumper lockers SAS one of these days after the IFS cant take it any more!!!!

08-06-2009, 09:15 PM	#9 (permalink)
94toy4x4fever Registered User Join Date: Mar 2008 Location: Lewiston, Idaho Posts: 382	Hey thanks for all the help! After I swap in my 5 speed I will talk with you some more about this swap! __________________ 94 toyota pickup. 22re w/ RV cam pacesetter header with flowmaster 40 series muffler 31" cooper stt's bedlinner **FOR SALE**^^^^ 87 toyota 4runner. 22re 5 speed swap 33" nokian vatiiva M/T'S 4inch lift trail gear rear bumper and sliders 40 series flowmaster things to do: gears custom front bumper lockers SAS one of these days after the IFS cant take it any more!!!!

08-07-2009, 09:11 PM	#14 (permalink)
Adam F Registered User Join Date: May 2002 Location: Cincinnati Ohio Posts: 2,398	I've driven multiple vehicles with the 4.3. The ones that are always the fastest are the Astro/Safari vans. We have a 99 Safari at work that blows the doors off the 96 s-10 with the same 4.3. __________________ 88 4Runner. 350 V8, R150 5-speed. SAS, 36" TSL's, elocker rear

08-04-2009, 04:56 AM	#2 (permalink)
86toylet Banned 'cause I was 4runnerchevy also banned Join Date: Mar 2009 Location: Santa Cruz Mountains Posts: 196	You will need to put your temp, and oil sensors onto the new engine. The rest is fairly easy. Since the Toyota gets its speedo from the t-case, thats not an issue. Let me know which motor you will be using and I'll get the wiring out to you (PM please). The 4.3 needs about 5 wires to run and about 12-15 wires for guages and other crap. Make sure you get the ECU, Harness, and ALL smog equipment (including canister, O2's and exhaust). The 87 fuel pump is adequate. Where are you located (smog reasons) ? Will you be using the Toyota Tranny or GM ?

08-04-2009, 03:33 PM	#4 (permalink)
86toylet Banned 'cause I was 4runnerchevy also banned Join Date: Mar 2009 Location: Santa Cruz Mountains Posts: 196	No splicing, you will just retain your current wires, from guages to sensors. You will have to remove the sensors from the Toyota engine and put them on the 4.3. I tapped my thermo housing for temperature, and put the oil sensor onto my 4.3 block.

08-05-2009, 04:47 AM	#6 (permalink)
86toylet Banned 'cause I was 4runnerchevy also banned Join Date: Mar 2009 Location: Santa Cruz Mountains Posts: 196	The 4.3 TPI Vortec, is the best. I believe 96+ are the best years. I run a 1992 CPI, which is also a good motor, but has a fixable problem with the regulator.

08-06-2009, 06:01 AM	#8 (permalink)
86toylet Banned 'cause I was 4runnerchevy also banned Join Date: Mar 2009 Location: Santa Cruz Mountains Posts: 196	I don't have IFS, so I don't know, but I imagine you will need body lift.

08-07-2009, 07:25 AM	#11 (permalink)
86toylet Banned 'cause I was 4runnerchevy also banned Join Date: Mar 2009 Location: Santa Cruz Mountains Posts: 196	alot of Astro's used the motor. I got mine from a 2wd S-10 Blazer. There is a considerable difference in power and torque between the TBI and CPI/TPI. The CPI and TPI make around 35+ more HP than the TBI. A buddy of mine just dyno'd his TPI, and its making 240 HP bone stock.

08-07-2009, 08:39 AM	#12 (permalink)
86toylet Banned 'cause I was 4runnerchevy also banned Join Date: Mar 2009 Location: Santa Cruz Mountains Posts: 196	4.3 LITER, 262 CID YEAR MAKE MODEL 85, 87-90, 92-93 Chevrolet Caprice 85-87 Chevrolet El Camino 85 Chevrolet Impala 85, 87-88 Chevrolet Monte Carlo 87 Pontiac Grand Prix 85 Pontiac Parisienne 05 Chevrolet Blazer ST 94-95 Chevrolet/GMC Blazer/Jimmy ST 90-93, 97-99 Chevrolet/GMC Chassis 1-ton P 88 Chevrolet/GMC Full-size 1-ton CK 85, 88-02 Chevrolet/GMC Full-size 1/2-ton CK 87-88 Chevrolet/GMC Full-size 1/2-ton RV 85 Chevrolet/GMC Full-size 3/4-ton C 2WD 88-95 Chevrolet/GMC Full-size 3/4-ton CK 87-88 Chevrolet/GMC Full-size 3/4-ton R 2WD 88-02 Chevrolet/GMC S10/S15 ST 87-95 Chevrolet/GMC Van 1-ton G 97-00 Chevrolet/GMC Van 1-ton Express/Savana G 85, 87-95 Chevrolet/GMC Van 1/2-ton G 99-00 Chevrolet/GMC Van 1/2-ton Express/Savana G 01-02 Chevrolet/GMC Van 1/2-ton Cargo Express/Savana 01-02 Chevrolet/GMC Van 1/2-ton Passenger Express/Savana 85, 87-95 Chevrolet/GMC Van 3/4-ton G 97-00 Chevrolet/GMC Van 3/4-ton Express/Savana G 01-02 Chevrolet/GMC Van 3/4-ton Cargo Express/Savana 01-02 Chevrolet/GMC Van 3/4-ton Passenger Express/Savana 90-04 Chevrolet/GMC Van Astro/Safari LM 85 Chevrolet/GMC Van Astro/Safari M 2WD 94-00 Oldsmobile Bravada ST

08-07-2009, 10:35 PM	#15 (permalink)
94toy4x4fever Registered User Join Date: Mar 2008 Location: Lewiston, Idaho Posts: 382	What years was the TPI made? I think thats the one im going to go with! Also I think im just going to try and buy a whole rig and just start swaping stuff over to the 4runner. __________________ 94 toyota pickup. 22re w/ RV cam pacesetter header with flowmaster 40 series muffler 31" cooper stt's bedlinner **FOR SALE**^^^^ 87 toyota 4runner. 22re 5 speed swap 33" nokian vatiiva M/T'S 4inch lift trail gear rear bumper and sliders 40 series flowmaster things to do: gears custom front bumper lockers SAS one of these days after the IFS cant take it any more!!!!

08-09-2009, 04:35 AM	#16 (permalink)
86toylet Banned 'cause I was 4runnerchevy also banned Join Date: Mar 2009 Location: Santa Cruz Mountains Posts: 196	TPI's are 1996+ I believe.

09-14-2009, 04:51 PM	#17 (permalink)
Joey Link Registered User Join Date: Nov 2007 Posts: 82	What sort of fuel economy can we expect out of a 1st Gen IFS 4runner with a 4.3 CPI/TPI?

10-23-2009, 08:19 AM	#19 (permalink)
86toylet Banned 'cause I was 4runnerchevy also banned Join Date: Mar 2009 Location: Santa Cruz Mountains Posts: 196	I have 36" tires, 4.88 gears, 4.3 CPI, 700R4, I get 15-17 MPG. Yes a 22RE pump will work for a stock 4.3. You may have to upgrade the size of your fuel lines but the pump is adequate.

10-23-2009, 01:40 PM	#20 (permalink)
jeffbland Registered User Join Date: May 2009 Location: twin falls idaho Posts: 16	sweet news! thanks for getting back to me

11-15-2009, 04:43 PM	#21 (permalink)
biker1 Registered User Join Date: Apr 2008 Location: Sandpoint, Idaho Posts: 14	It looks like Idaho is jumping on the 4.3l bandwagon. I am - that is for sure. I have my 91 TBI 4.3l in but am now stumped on quite a few things. They include the Painless #6101 wiring harness, radiator hose routing, serpentine belt set up(s), A/C, Power Steering, Fuel pump, etc. These are the biggies right now. It seems like there is quite a bit of info but lots of it differs.... Any hints or pics you can send my way would be great. I think I will set up a thread with my build so far and hopefully folks who have done the tbi swap can chime in with do's and donts that they know work or doesn't. Thanks in advance. __________________ RED '90 4runner SR5: 4" IFS PC lift, PC 35x12.5 on 15" PC steel wheels, Detroit front, Lock Rite rear, 4.88 gears, 3.slo, rolled onto side a coupla yrs ago. Planning to do some cuttin n weld'n to make it a hi-lux truk style baja beach cruiser. Oh yeah and a 4.3l is in its future GREEN '90 4runner SR5:4" IFS Pro Comp lift, 2" Body Lift, Pro Comp MT 35x12.5" on 15" alloy wheels, True-trac locker front, Detroit locker rear, 5.29 gears, 4.3l swap in progress Now all I need is a Gold 4runner

11-23-2009, 08:32 AM	#22 (permalink)
live4soccer7 Registered User Join Date: Nov 2008 Posts: 440	wouldn't something with around 240hp beat the hell out of the yota's (84-89) frame/structure and drivetrain?

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