another v6 to v8 swap question...sry
Thread Starter
Junior Member
Joined: Apr 2005
Posts: 86
Likes: 0
From: Mallorytown, ON. CANADA!!!
Car: 87 Firebird
Engine: Was 2.8, Now 350
Transmission: V6 T-5
Axle/Gears: 3.45 Open
another v6 to v8 swap question...sry
ok here it gose...
i found place that will sell me a special clutch, how it works is that its just like a v8 one...same size and all
but the center hole is the size for or v6 trannys....
the guys i was talkin to said all i need...is
for a v8---bellhousing
pressureplate
fork
for a v6---tranny
hydrolic setup
and the rest of your v6 setup
this is as i understand it...keep in mind i no very lil about this stuff yet...
if you anybody has been down this road any help/advice would be nice
or if i am totally missing sompthing...thx
i found place that will sell me a special clutch, how it works is that its just like a v8 one...same size and all
but the center hole is the size for or v6 trannys....
the guys i was talkin to said all i need...is
for a v8---bellhousing
pressureplate
fork
for a v6---tranny
hydrolic setup
and the rest of your v6 setup
this is as i understand it...keep in mind i no very lil about this stuff yet...
if you anybody has been down this road any help/advice would be nice
or if i am totally missing sompthing...thx
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iTrader: (2)
Joined: Jan 2001
Posts: 4,149
Likes: 3
From: Tampa, FL, USA
Car: 93 240SX
Engine: LQ9
Transmission: T56
Axle/Gears: 3.54 R200 IRS
I've done it, just as you described, fwiw the hydraulics are the same for both V6 and V8. You'll also need a V8 flywheel.
What are you trying to do
Install a V8 into your current 1987 platform engine bay?
Your first question should be how smog legal will be the car IF I install a V8 into this original V6 engined car?
In CA ya need, after all is said & done one goes to a smog referee & asks them "IF I did the job/swap right?" Then pay them. I did my 3.4 swap based upon that intial question. Which is why I upgraded to the 3.4. Simple engineering excercise & "all the stuff I had (2.8) fit without a true concern". And no smog ref to interfer with my MAIN objective, getting car back on road, cheap. My Firebird swap cost me $800 including te hengine (used low milage 3.4)
IF no concern for smog in your area, do what ever your wallet allows.
BUT in all honesty, for your MPFI platform, it's far wiser to JUST START WITH A V8 powered Fbody, cause "all the correct stuff is included in initial purchase".
Consider all the parameters of a swap before ya lift a wrench. In end ya may find a V8 powered 3rd Gen IN GREAT SHAPE, for FAR LESS than ALL the necessities of swapping a V8 into your current ride.
After all is considered, open your wallet and have space to do the work.
PS IF ya had a 82-84 V6 carb'd F Body it's a far easier upgrade to V8.
Why?
Far LESS electronics in the way of the swap.
Unless ya considering a hack job V8 upgrade, seek out a great condition V8 powered 3rd Gen. Way easier solution, in the end.
Install a V8 into your current 1987 platform engine bay?
Your first question should be how smog legal will be the car IF I install a V8 into this original V6 engined car?
In CA ya need, after all is said & done one goes to a smog referee & asks them "IF I did the job/swap right?" Then pay them. I did my 3.4 swap based upon that intial question. Which is why I upgraded to the 3.4. Simple engineering excercise & "all the stuff I had (2.8) fit without a true concern". And no smog ref to interfer with my MAIN objective, getting car back on road, cheap. My Firebird swap cost me $800 including te hengine (used low milage 3.4)
IF no concern for smog in your area, do what ever your wallet allows.
BUT in all honesty, for your MPFI platform, it's far wiser to JUST START WITH A V8 powered Fbody, cause "all the correct stuff is included in initial purchase".
Consider all the parameters of a swap before ya lift a wrench. In end ya may find a V8 powered 3rd Gen IN GREAT SHAPE, for FAR LESS than ALL the necessities of swapping a V8 into your current ride.
After all is considered, open your wallet and have space to do the work.
PS IF ya had a 82-84 V6 carb'd F Body it's a far easier upgrade to V8.
Why?
Far LESS electronics in the way of the swap.
Unless ya considering a hack job V8 upgrade, seek out a great condition V8 powered 3rd Gen. Way easier solution, in the end.
Supreme Member
iTrader: (2)
Joined: Jan 2001
Posts: 4,149
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From: Tampa, FL, USA
Car: 93 240SX
Engine: LQ9
Transmission: T56
Axle/Gears: 3.54 R200 IRS
The emissions requirements just about only require the engine to be from the same model year or newer, passenger car and all existing emissions devices it came with be retained. Everyone yapping about how its best to start with a V8 car around here is getting rediculous, most of the time its people who havent done the swap, or did it without enough research, or experience...
I can only add that my tech thread about the 3.4 powerplant upgrade was done & written with much research in mind. And has been used by over 100 plus swappers to help them upgrade doing/using a V6 engine to V6 engine swap.
I personally have coached thru internet atleast 50 plus people.
I've done 2, 3.4 swaps.
And both smog legal.
Reason why we all say about V8 swaps is that
After all said and done,
ya end (IF starting with a MPFI V6 ride) spending way more to get a decent V8 powered ride.
IF ya start on a V8 basketcase 3rd Gen platform and lavish your swap-powerplant upgrade talents/skills money, ya way ahead.
And smog wise, it works out way better in end.
Incidentially why ya think GM made a 350 engine swap upgrade using a V8 chassis?
BECAUSE IT IS 100% SMOG LEGAL!
Seek out part number 10185077
"Chevrolet engineers have developed an emission legal conversion kit to install a High Output 5.7 (350) small block into a 1982-87 F Body originally equipped with a LG4 or L69 305 V8 engine and 700R4 tranny". Quoted from the GM Performance Parts book.
I personally have coached thru internet atleast 50 plus people.
I've done 2, 3.4 swaps.
And both smog legal.
Reason why we all say about V8 swaps is that
After all said and done,
ya end (IF starting with a MPFI V6 ride) spending way more to get a decent V8 powered ride.
IF ya start on a V8 basketcase 3rd Gen platform and lavish your swap-powerplant upgrade talents/skills money, ya way ahead.
And smog wise, it works out way better in end.
Incidentially why ya think GM made a 350 engine swap upgrade using a V8 chassis?
BECAUSE IT IS 100% SMOG LEGAL!
Seek out part number 10185077
"Chevrolet engineers have developed an emission legal conversion kit to install a High Output 5.7 (350) small block into a 1982-87 F Body originally equipped with a LG4 or L69 305 V8 engine and 700R4 tranny". Quoted from the GM Performance Parts book.
Supreme Member
iTrader: (2)
Joined: Jan 2001
Posts: 4,149
Likes: 3
From: Tampa, FL, USA
Car: 93 240SX
Engine: LQ9
Transmission: T56
Axle/Gears: 3.54 R200 IRS
When starting with a V8 car which you imply is so important, for most you gain: 1. motor mounts (they're typically worn out and need to be replaced anyway making this a moot point) 2. a sorry low performance v8 engine that you'll want to swap out anyway 3. the correct trans that bolts up, although chances are its toast, beat on and worn out making replacing it similar to point 1. , 4. v8 exhaust manifolds, which when going with a performance build in mind, you'd be shooting yourself in the foot thinking these are a benefit.
Oddly enough that kit, when used in the years its specified for, should have no trouble passing even cali's smog laws if its made to pass them when replacing a v8, you'd be in just the same case as putting a same year or newer v8 in and having it looked over by a "referee" being that its a smog legal replacement, for the same year as your car is, or newer than your car is, you will likely have no trouble passing.
Saying someone is going to have something great by buying a "V8 powered ride" is quite misleading, the entire drivetrain even in the best V8 thirdgen offered from GM (short limited production vehicles like the firehawk) is a poor excuse for a performance drivetrain, and typically those of us looking at actually go fast, end up with none of the original car in the first place.
Oddly enough that kit, when used in the years its specified for, should have no trouble passing even cali's smog laws if its made to pass them when replacing a v8, you'd be in just the same case as putting a same year or newer v8 in and having it looked over by a "referee" being that its a smog legal replacement, for the same year as your car is, or newer than your car is, you will likely have no trouble passing.
Saying someone is going to have something great by buying a "V8 powered ride" is quite misleading, the entire drivetrain even in the best V8 thirdgen offered from GM (short limited production vehicles like the firehawk) is a poor excuse for a performance drivetrain, and typically those of us looking at actually go fast, end up with none of the original car in the first place.
Originally posted by KED85
I can only add that my tech thread about the 3.4 powerplant upgrade was done & written with much research in mind. And has been used by over 100 plus swappers to help them upgrade doing/using a V6 engine to V6 engine swap.
I personally have coached thru internet atleast 50 plus people.
I've done 2, 3.4 swaps.
And both smog legal.
Reason why we all say about V8 swaps is that
After all said and done,
ya end (IF starting with a MPFI V6 ride) spending way more to get a decent V8 powered ride.
IF ya start on a V8 basketcase 3rd Gen platform and lavish your swap-powerplant upgrade talents/skills money, ya way ahead.
And smog wise, it works out way better in end.
Incidentially why ya think GM made a 350 engine swap upgrade using a V8 chassis?
BECAUSE IT IS 100% SMOG LEGAL!
Seek out part number 10185077
"Chevrolet engineers have developed an emission legal conversion kit to install a High Output 5.7 (350) small block into a 1982-87 F Body originally equipped with a LG4 or L69 305 V8 engine and 700R4 tranny". Quoted from the GM Performance Parts book.
I can only add that my tech thread about the 3.4 powerplant upgrade was done & written with much research in mind. And has been used by over 100 plus swappers to help them upgrade doing/using a V6 engine to V6 engine swap.
I personally have coached thru internet atleast 50 plus people.
I've done 2, 3.4 swaps.
And both smog legal.
Reason why we all say about V8 swaps is that
After all said and done,
ya end (IF starting with a MPFI V6 ride) spending way more to get a decent V8 powered ride.
IF ya start on a V8 basketcase 3rd Gen platform and lavish your swap-powerplant upgrade talents/skills money, ya way ahead.
And smog wise, it works out way better in end.
Incidentially why ya think GM made a 350 engine swap upgrade using a V8 chassis?
BECAUSE IT IS 100% SMOG LEGAL!
Seek out part number 10185077
"Chevrolet engineers have developed an emission legal conversion kit to install a High Output 5.7 (350) small block into a 1982-87 F Body originally equipped with a LG4 or L69 305 V8 engine and 700R4 tranny". Quoted from the GM Performance Parts book.
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Thread Starter
Junior Member
Joined: Apr 2005
Posts: 86
Likes: 0
From: Mallorytown, ON. CANADA!!!
Car: 87 Firebird
Engine: Was 2.8, Now 350
Transmission: V6 T-5
Axle/Gears: 3.45 Open
ive looked in to doing the 3.4 swap...and ur rite it would be alot easyer...but were i am...im lookin at about $600 befor shipping!
and when alls said and done if i go the v8 route im only paying a lil bit more and my v8 will give me more power the a six ever will
gas is gonna sux now...but hey ya cant win them all
and as far as smog gose all tell them its a 267 sbc...around here if that engine wasent offered in ur car...u have lower smog restrictions
and when alls said and done if i go the v8 route im only paying a lil bit more and my v8 will give me more power the a six ever will
gas is gonna sux now...but hey ya cant win them all
and as far as smog gose all tell them its a 267 sbc...around here if that engine wasent offered in ur car...u have lower smog restrictions
I look at it this way
Spend your money the way you want to.
Decent 3rd Gen V8 rides still intact & in good shape go for about $1500 out here.
Do what you want.
Research before ya lift a wrench.
PS I guess you don't rewire cars...
A V6 MPFI to V8 wire harness deal is the real PITA.
ONLY IF your desire is to do a sanitary proper operating car.
Anyone can build a rats nest hacked car, cheap.
Spend your money the way you want to.
Decent 3rd Gen V8 rides still intact & in good shape go for about $1500 out here.
Do what you want.
Research before ya lift a wrench.
PS I guess you don't rewire cars...
A V6 MPFI to V8 wire harness deal is the real PITA.
ONLY IF your desire is to do a sanitary proper operating car.
Anyone can build a rats nest hacked car, cheap.
Thread Starter
Junior Member
Joined: Apr 2005
Posts: 86
Likes: 0
From: Mallorytown, ON. CANADA!!!
Car: 87 Firebird
Engine: Was 2.8, Now 350
Transmission: V6 T-5
Axle/Gears: 3.45 Open
i c what ur saying but were dose it end?
1500, 2000 2500...
i dont have the time to save for that...i need my car back...
and i dont just intend to cram a engine in there and leave a mess
lots of nice cars have been made from plane jane chepo cars...and yes my car will never be a show stopper...but thatz not what i want
1500, 2000 2500...
i dont have the time to save for that...i need my car back...
and i dont just intend to cram a engine in there and leave a mess
lots of nice cars have been made from plane jane chepo cars...and yes my car will never be a show stopper...but thatz not what i want
Last edited by ~87Bird~2.8~; Jul 21, 2005 at 08:39 PM.
Thread Starter
Junior Member
Joined: Apr 2005
Posts: 86
Likes: 0
From: Mallorytown, ON. CANADA!!!
Car: 87 Firebird
Engine: Was 2.8, Now 350
Transmission: V6 T-5
Axle/Gears: 3.45 Open
damn i hit the wrong button!!!
why cant i delete this???
why cant i delete this???
Last edited by ~87Bird~2.8~; Jul 21, 2005 at 08:43 PM.
Supreme Member
iTrader: (2)
Joined: Jan 2001
Posts: 4,149
Likes: 3
From: Tampa, FL, USA
Car: 93 240SX
Engine: LQ9
Transmission: T56
Axle/Gears: 3.54 R200 IRS
Now I havent probed an 87, and im sure there *might* be some differences inside, but I know for a fact 90-92 V6 and tpi share the EXACT same wiring inside, the wiring unplugs at the firewall C100, and under the passenger side dash C207 making a tpi swap in one a plug and play deal per say. This could be different with an 87, though different enough to deter someone ? Heck if things get too bad I bet i can help him.
See if you know what these are

See if you know what these are
Originally posted by KED85
I look at it this way
Spend your money the way you want to.
Decent 3rd Gen V8 rides still intact & in good shape go for about $1500 out here.
Do what you want.
Research before ya lift a wrench.
PS I guess you don't rewire cars...
A V6 MPFI to V8 wire harness deal is the real PITA.
ONLY IF your desire is to do a sanitary proper operating car.
Anyone can build a rats nest hacked car, cheap.
I look at it this way
Spend your money the way you want to.
Decent 3rd Gen V8 rides still intact & in good shape go for about $1500 out here.
Do what you want.
Research before ya lift a wrench.
PS I guess you don't rewire cars...
A V6 MPFI to V8 wire harness deal is the real PITA.
ONLY IF your desire is to do a sanitary proper operating car.
Anyone can build a rats nest hacked car, cheap.
Let's end it this way.
Going from a V6 to a V8 swap using the MPFI V6 vehicle as a platform is much more engineering than majority of guys here attempt.
Or may successfully attain.
Block plug & lots of connectors.
If ya got some for a 1967 RS Camaro, I'd enjoy some new ones.
Going from a V6 to a V8 swap using the MPFI V6 vehicle as a platform is much more engineering than majority of guys here attempt.
Or may successfully attain.
Block plug & lots of connectors.
If ya got some for a 1967 RS Camaro, I'd enjoy some new ones.
Supreme Member
iTrader: (2)
Joined: Jan 2001
Posts: 4,149
Likes: 3
From: Tampa, FL, USA
Car: 93 240SX
Engine: LQ9
Transmission: T56
Axle/Gears: 3.54 R200 IRS
Originally posted by KED85
Let's end it this way.
Going from a V6 to a V8 swap using the MPFI V6 vehicle as a platform is much more engineering than majority of guys here attempt.
Or may successfully attain.
Block plug & lots of connectors.
If ya got some for a 1967 RS Camaro, I'd enjoy some new ones.
Let's end it this way.
Going from a V6 to a V8 swap using the MPFI V6 vehicle as a platform is much more engineering than majority of guys here attempt.
Or may successfully attain.
Block plug & lots of connectors.
If ya got some for a 1967 RS Camaro, I'd enjoy some new ones.
Get me a pic of it and i'll try.
Unless you dont care for using the factory style connector on it, then I can get you both sides of the thirdgen one which is shown.
And that's great because you have figured/reengineered a detail MOST here in V6 land, just cannot simply accomplish in their time dedicated for swapping.
I've written my tech thread so most people CAN accomplish the "simple yet detailed" upgrade of slipping in a great little motor, the 3.4s, for as little cash outlay & also as little "real parts purchasing". One simply reuses 85% of the original donor vehicle parts, and swaps them onto the new donor long block 3.4.
Because the 3.4 upgrade only requires ya to have a 60*V6 as your platform.
For most here, a smog legal swap, a V6 to V8, using a MPFI platform is just beyond their real backyard skills and talents. IF ya started with a 82-84 V660* platform, that's such an easy mission of swapping in the V8. So much LESS electronics for the end result, a decent well engineered engine power plant upgrade.
I, myself, a LS1 into my early Camaro? No thanks. Less is more & just fine by me. Me? I'd rather spend the funds on a 6 speed tranny swap at atleast $2500! I'm building a 1970 LT1/Z28 for that car.
I've written my tech thread so most people CAN accomplish the "simple yet detailed" upgrade of slipping in a great little motor, the 3.4s, for as little cash outlay & also as little "real parts purchasing". One simply reuses 85% of the original donor vehicle parts, and swaps them onto the new donor long block 3.4.
Because the 3.4 upgrade only requires ya to have a 60*V6 as your platform.
For most here, a smog legal swap, a V6 to V8, using a MPFI platform is just beyond their real backyard skills and talents. IF ya started with a 82-84 V660* platform, that's such an easy mission of swapping in the V8. So much LESS electronics for the end result, a decent well engineered engine power plant upgrade.
I, myself, a LS1 into my early Camaro? No thanks. Less is more & just fine by me. Me? I'd rather spend the funds on a 6 speed tranny swap at atleast $2500! I'm building a 1970 LT1/Z28 for that car.
Thread Starter
Junior Member
Joined: Apr 2005
Posts: 86
Likes: 0
From: Mallorytown, ON. CANADA!!!
Car: 87 Firebird
Engine: Was 2.8, Now 350
Transmission: V6 T-5
Axle/Gears: 3.45 Open
are 3rd and 4th gens really popular in the states....cuz i c u guys always get theres great deals on 3.4s...or other parts cars...
and u get themlocaly 2...im just in disbelif that in my town of 25,000+ i cant find anygood deals like u guys do...i had to go 4 hours away to get these part...grrr....
this car is driving me nuts!!
and u get themlocaly 2...im just in disbelif that in my town of 25,000+ i cant find anygood deals like u guys do...i had to go 4 hours away to get these part...grrr....
this car is driving me nuts!!
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