4.3 v8 questions

eich75 · 12-06-2008, 10:24 AM

has anyone ever had any experience with this engine? i found a rebuilt one for a nice price and i thought it would be perfect for my yota... does it qualify as a chevy small block? i was wondering cuz the adapter from advance adapters says sbc, and i dont wanna spend a grand to find out i cant get an adapter for it

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Adam F · 12-08-2008, 08:27 AM

Seriously?

First off, I'm assuming you mean V6, not V8 as you have in your thread title.

Secondly, the 4.3 V6 is basically the same design as the SBC V8, with 2 less cylinders. Bellhousing is the same, and front accesories and everythng are the same.

Third, there are several threads RIGHT UNDER YOUR NOSE in this very forum with 4.3 swaps. SEARCH! Hell, just look right below this thread.

......a grand for a 4.3???? I can buy a Vortec 4.3 for $250

You have A LOT of research before you go any further. Not that you will though, your just like the other 500 people on here that ask the same questions. Just a pipe dream.

WFO · 12-08-2008, 08:50 AM

Do you mean the GM 5.3s little brother the 4.8?

Adam F · 12-09-2008, 07:35 PM

My appologies if you meant 4.8L

eich75 · 12-10-2008, 12:55 AM

no, gm made a 4.3 V8, they were optional in the caprices, the one i found is came from a 95 chevy caprice... and i meant $350 for the motor, $500 for the adapter, and whatever else i may need... and i know there are PLENTY of 4.3 v6 swap threads on here ha ha i think i've read at least half of them

Adam F · 12-10-2008, 01:02 PM

OH. I've never heard of the 4.3 V8. My bad.

Wikipedia says its externally identical to the 5.7L LT1

In that case, the LT1 shares the same bellhousing as the older SBC engines. So the adapters should work.

I guess it cant hurt to get the 4.3, as it puts out decent power. If you dont like it, you can always swap it for another SBC engine without reworking the bellhousing adapter.

RevNL · 12-11-2008, 12:17 PM

Quote:

Originally Posted by eich75

no, gm made a 4.3 V8, they were optional in the caprices, the one i found is came from a 95 chevy caprice... and i meant $350 for the motor

Doesn't sound like a worthwhile swap. For a couple hundred more, you could get a real 5.7L LT1. And that's a drop in the bucket compared to what the whole project will cost. The disadvantages are the same with both, but you get more power and aluminum heads on the 5.7L.

That '95 Caprice was probably a taxi cab. How many miles do you think are on the engine?

DYNNOMMYTE · 12-11-2008, 12:45 PM

I had a 4.3 V8 in my Dad's old (82) parrisienne. Almost the same as the 350, just less displacement. I was considering finding one for a swap, but they are not very popular anymore.

I am not sure about what was offered in the newer versions of this engine, but I had swapped an RV cam, 4 barrel carb and better exhaust manifolds to make it more fuel efficient and it ran great for over 400 K that we had it...

**Yoda** · 12-11-2008, 01:43 PM

Specs are:

265 CI (4.3L)

200 hp

235 lb. ft of torque

Bore: 3.736

Stroke: 3

Comp 9.9:1

sequential FI

eich75 · 12-14-2008, 11:18 AM

well the motor came out of the caprice, not sure if it was a taxi or not... but it was completly rebuilt with new everything for $350... i just need the computer and the wiring... and to put the accessories back on it... water pump, alternator, etc.

eich75 · 12-14-2008, 11:23 AM

hey adam, how much did it cost you to put a 350 in your truck? and how hard was it? i'm just lookin for a ballpark number, i've seen everything from a few hundred bucks to 3 grand

texcat101 · 12-14-2008, 07:32 PM

After installing the 4.3 V6 in my 4runner I can't see trying to install a V8 theres just not that much room...
yes I know they do it all the time, but dang that thing is tight up front.

scuba · 12-14-2008, 08:20 PM

1UZFE FTW

Nuff Said...

Adam F · 12-15-2008, 08:11 AM

Quote:

Originally Posted by texcat101

but dang that thing is tight up front.

Tight would be an understatement

How much did the swap cost? I'm not counting. I don't want to know.

I got my donor engine from a 76 blazer. Bought it for $250. Kept the motor. Sold everything else, got about $400 from parting it out. So I made $150 on the deal. And I used a bunch of scrap steel I had at home and at work to build other various components like core support braces and t-case crossmember.

Adapter and clutch $800.
Radiator $100.
Electric fan, wiring, relays, switches $100
Motor mounts $75.
Gasket kit and tune up for the motor about $100.
Radiator plumbing maybe $30.
Fuel lines $15.
Power steering parts $40.
Drive shaft work $150.
Fluids $50.
Welding and grinding consumables $50
Had to buy hoist and engine stand $175
Homemade exhaust $120
and a bunch more nickel and dime stuff I'm forgetting

total? $1800. Thats a BALLPARK figure. Tons of stuff I'm leaving out. Not to mention the time put into this.

12-08-2008, 08:27 AM	#2 (permalink)
Adam F Registered User Join Date: May 2002 Location: Cincinnati Ohio Posts: 2,398	Seriously? First off, I'm assuming you mean V6, not V8 as you have in your thread title. Secondly, the 4.3 V6 is basically the same design as the SBC V8, with 2 less cylinders. Bellhousing is the same, and front accesories and everythng are the same. Third, there are several threads RIGHT UNDER YOUR NOSE in this very forum with 4.3 swaps. SEARCH! Hell, just look right below this thread. ......a grand for a 4.3???? I can buy a Vortec 4.3 for $250 You have A LOT of research before you go any further. Not that you will though, your just like the other 500 people on here that ask the same questions. Just a pipe dream. __________________ 88 4Runner. 350 V8, R150 5-speed. SAS, 36" TSL's, elocker rear Last edited by Adam F; 12-08-2008 at 08:29 AM.

12-09-2008, 07:35 PM	#4 (permalink)
Adam F Registered User Join Date: May 2002 Location: Cincinnati Ohio Posts: 2,398	My appologies if you meant 4.8L __________________ 88 4Runner. 350 V8, R150 5-speed. SAS, 36" TSL's, elocker rear

12-10-2008, 12:55 AM	#5 (permalink)
eich75 Registered User Join Date: Nov 2008 Location: St.Marys, Pennsylvania Posts: 150	no, gm made a 4.3 V8, they were optional in the caprices, the one i found is came from a 95 chevy caprice... and i meant $350 for the motor, $500 for the adapter, and whatever else i may need... and i know there are PLENTY of 4.3 v6 swap threads on here ha ha i think i've read at least half of them __________________ sorry but still learnin!! 88 yota pickup 22RE/5spd 31" all terrains completly stock --------------- future [hopfully :)] rear locker 33" mud terrains SAS 3.4 swap!!

12-10-2008, 01:02 PM	#6 (permalink)
Adam F Registered User Join Date: May 2002 Location: Cincinnati Ohio Posts: 2,398	OH. I've never heard of the 4.3 V8. My bad. Wikipedia says its externally identical to the 5.7L LT1 In that case, the LT1 shares the same bellhousing as the older SBC engines. So the adapters should work. I guess it cant hurt to get the 4.3, as it puts out decent power. If you dont like it, you can always swap it for another SBC engine without reworking the bellhousing adapter. __________________ 88 4Runner. 350 V8, R150 5-speed. SAS, 36" TSL's, elocker rear

12-11-2008, 12:45 PM	#8 (permalink)
DYNNOMMYTE Registered User Join Date: Oct 2007 Posts: 85	I had a 4.3 V8 in my Dad's old (82) parrisienne. Almost the same as the 350, just less displacement. I was considering finding one for a swap, but they are not very popular anymore. I am not sure about what was offered in the newer versions of this engine, but I had swapped an RV cam, 4 barrel carb and better exhaust manifolds to make it more fuel efficient and it ran great for over 400 K that we had it... __________________ 1985 RUNNER, supra engine conversion, SFArunning 32's, needs TLC; 1987 PICKUP, 22RET, electrical issues, IFS running 32s <RIP>;1989 COMANCHE, residential plow truck, daily beater; 1993 CHEV 2500, commercial plow truck, nick named BIG UGLY

12-08-2008, 08:50 AM	#3 (permalink)
WFO Registered User Join Date: Feb 2007 Location: Fredericksburg, VA Posts: 497	Do you mean the GM 5.3s little brother the 4.8?

12-11-2008, 01:43 PM	#9 (permalink)
Yoda Super Moderator Staff Join Date: May 2002 Location: North Bend, WA Posts: 2,664	Specs are: 265 CI (4.3L) 200 hp 235 lb. ft of torque Bore: 3.736 Stroke: 3 Comp 9.9:1 sequential FI __________________ David TLCA 14788 71 Landcruiser FJ-40 TBI 327, TH-350, Warn 8000, disk axle swap. 76 Landcruiser FJ-40 project/parts (haven't decided)

12-14-2008, 11:18 AM	#10 (permalink)
eich75 Registered User Join Date: Nov 2008 Location: St.Marys, Pennsylvania Posts: 150	well the motor came out of the caprice, not sure if it was a taxi or not... but it was completly rebuilt with new everything for $350... i just need the computer and the wiring... and to put the accessories back on it... water pump, alternator, etc. __________________ sorry but still learnin!! 88 yota pickup 22RE/5spd 31" all terrains completly stock --------------- future [hopfully :)] rear locker 33" mud terrains SAS 3.4 swap!!

12-14-2008, 11:23 AM	#11 (permalink)
eich75 Registered User Join Date: Nov 2008 Location: St.Marys, Pennsylvania Posts: 150	hey adam, how much did it cost you to put a 350 in your truck? and how hard was it? i'm just lookin for a ballpark number, i've seen everything from a few hundred bucks to 3 grand __________________ sorry but still learnin!! 88 yota pickup 22RE/5spd 31" all terrains completly stock --------------- future [hopfully :)] rear locker 33" mud terrains SAS 3.4 swap!!

12-14-2008, 07:32 PM	#12 (permalink)
texcat101 Registered User Join Date: Mar 2008 Location: W. Texas Posts: 367	After installing the 4.3 V6 in my 4runner I can't see trying to install a V8 theres just not that much room... yes I know they do it all the time, but dang that thing is tight up front. __________________ 85 4runner, 3" spring lift, 4Crawler 2" body lift, Precision Gear 5.29's w/power brute posi frt & rear, M/T Baja MTZ 33x12.5x15, Warn M8000 winch, Optima redtop, Marlin Crawler Front, Rear Bumpers and Sliders, Allpro crossover steering & U bolt flip, LC rotors, '94 calipers and booster. 4.3 vortec / 700r4, Megasquirt II, EDIS6

12-14-2008, 08:20 PM	#13 (permalink)
scuba Registered User Join Date: Jan 2008 Location: Temecula, Or on the rocks Posts: 6,968	1UZFE FTW Nuff Said... __________________ Screw you guys I'm goin to TTORA Mods, please be mature and leave my sig alone, thanks. No, I will not be your friend.

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