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A 2.8l to a 5.7 swap is what I'd like to do since I have a third gen
V6 to V8 swap thread
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I am new so hello everyone and where snouts would Be the best bet to find parts for a swap from a 3.8 to ls1 I've been looking for parts trams SMS with no luck. Any help is much appreciated thanks in advance
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nice thread!
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Thanks
What would it take to drop a 350 small block race engine in a 99 3.8. I'm old school and love my carbs. Don't care to much for all the electronic bull cap that real cars don't need. Just fuel, spark and go
What would it take to drop a 350 small block race engine in a 99 3.8. I'm old school and love my carbs. Don't care to much for all the electronic bull cap that real cars don't need. Just fuel, spark and go
What would it take to drop a 350 small block race engine in a 99 3.8. I'm old school and love my carbs. Don't care to much for all the electronic bull cap that real cars don't need. Just fuel, spark and go
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this is probably the dumbest thing you've ever heard of but here goes. So I have a Ford van sitting in my garage and I got this dumb idea of swapping out my 3.4sfi v6 for a 5.4l triton v8. So now I'm trying to figure out if I'm gonna have to swap the transmission in my firebird or it if it'll work in the new engine, if not what would I need to make it work?
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Your watermelon Is probably better off with and LT1 or LSX swap - headaches will be an inevitability trying to put a ford motor in a Pontiac. But I'm sure you can do it if you really want to. You would likely have to swap the tranny. You would also need to fab up some motor mounts. Oh, and I bet a different length drive shaft, unless you had a happy accident and things work out for you. 
haha, yes, many headaches... I would search the net to see if someone has done this to any gm car... That might be a good place to start if you are serious and hard fast on your ford engine. (You might like an LT1 or LSX better... A LOT better!)
haha, yes, many headaches... I would search the net to see if someone has done this to any gm car... That might be a good place to start if you are serious and hard fast on your ford engine. (You might like an LT1 or LSX better... A LOT better!) 
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Your profile info indicates your V6 has a "6 speed manual". Since the T56 was not available with the V6, appears you have already done a transmission transplant. If that is correct, do you have the LT1 version of the T 56, or the LS1 version? McLeod makes a universal, modular, explosion-proof bell housing that connects the LS1 version to virtually any engine.
On the other hand, if your V6 actually has a T5 5-speed manual, which is the only manual available with the V6, it's most likely too weak to stand up to a truck engine that produced torque rather than HP. You would be looking at a Tremec TKO 500 that could stand up to the torque. Those are available for Ford engines.
Personally, based on 150,000 miles on a Ford F-150 with the Triton engine (company supplied truck), it has issues of its own, the major problem being the spark plugs with the ridiculously long nose required to reach through the bulky head. Typically, the nose breaks off when you try to unscrew the plug since the annulus between the head and the plug nose is packed with compressed carbon. That engine is also very wide, due to the OH cam heads. Simply measuring the width of the Triton engine should enable you to determine if it would even fit in the F-Body's narrow engine bay.
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Any answers on this?? I have a 99 firebird and have access to a 4.3 lt1 CHEAP with low miles.. can anyone give me some information on this? I have a 99 v6 firebird with the engine already pulled.. I also already have a k-member with suspension and brakes from a 95 lt1 along with the lt1 harness..What computer should I look for? The 4.3 lt1 pcm? I know some assories will have to be changed, will the body harness be compatible with the lt1? I also have the stock 5 speed with 3.23s in my 99.. I'm collecting parts to do this swap and would GREATLY appreciate any helpful info. And I KNOW, LS swaps can be done for about the same price but I have access to LT parts..so unless your going to buy me the LS parts I need, please keep this LT1! Thanks
Hey guys,
Been reading for a while, first post. I am NOT a mechanic by any stretch, but I would like some expert opinions:
My 1991 Firebird (base V6 automatic) was my first car. It has lain dormant for over a decade and now that I am a responsible grown-up (ahem), I would like to restore it and also make some changes. I was never happy with my V6 as a kid, I always wanted more giddy-up. I am not a drag strip guy, I'm not even a top speed guy. I just want to make my first car what I want it to be, sweet and loud sound, and quick. I am interested in sound and pick up off the stop light. This will by no means be my daily driver, but would like to be able to take trips on the interstate in it and not feel restricted. I'm just a lowly high school teacher with no knowledge of any of the technical aspects of this. I have toyed with idea of changing to manual transmission just for the fun of it, but after reading, that seems impractical. From all I've read on here and other places, my three aspects I need to look at are the type of V8 engine, transmission, and rear end. I have a buddy that will do most of the work for me (licensed mechanic I've known 30+ years).
Can you guys make some recommendations with my goals in mind? Please keep it simple, I'm a novice to say the least.
thanks for any help
Been reading for a while, first post. I am NOT a mechanic by any stretch, but I would like some expert opinions:
My 1991 Firebird (base V6 automatic) was my first car. It has lain dormant for over a decade and now that I am a responsible grown-up (ahem), I would like to restore it and also make some changes. I was never happy with my V6 as a kid, I always wanted more giddy-up. I am not a drag strip guy, I'm not even a top speed guy. I just want to make my first car what I want it to be, sweet and loud sound, and quick. I am interested in sound and pick up off the stop light. This will by no means be my daily driver, but would like to be able to take trips on the interstate in it and not feel restricted. I'm just a lowly high school teacher with no knowledge of any of the technical aspects of this. I have toyed with idea of changing to manual transmission just for the fun of it, but after reading, that seems impractical. From all I've read on here and other places, my three aspects I need to look at are the type of V8 engine, transmission, and rear end. I have a buddy that will do most of the work for me (licensed mechanic I've known 30+ years).
Can you guys make some recommendations with my goals in mind? Please keep it simple, I'm a novice to say the least.
thanks for any help
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16,122 Posts
Easiest swap would be a Gen 1 small block Chevy (SBC). They put that engine in the 3rd Gen Firebirds and Camaros. That would mate well with a 700R4 4-speed overdrive automatic trans, again, what GM put in the 3rd Gens. Do you want to stay with a fuel injected engine (recommended) or use a carburetor? The L98 350ci (5.7L) V8 engine was used in the later 3rd Gens and has excellent low end torque, but runs out of steam above 4,500 RPM. That can be solved with a set of cast iron Vortec heads from a late model pickup, and a matching intake. The L98 has a bit too much torque for the Tremec 5-speed T5 manual that was used in the 3rd and 4th Gens, GM wouldn't even offer the L98 with a manual trans. However.... best of both worlds - a T56 6-speed manual from a 4th Gen V8. Adapter kit required.
Alternatives include the Gen 2 SBC LT1 350ci (5,7L) V8 engine that was used in the 4th Gens from 93-97. Torque almost at good as the L98, and another 1,000 RPM if heavy breathing. T56 bolts right up with no adapters. But, the LT1 has issues with the Optispark distributor, which GM conveniently located under the weep holes for the water pump. But.... you can easily make up to 500HP at the flywheel, normally aspirated. And the block is good for in excess of 1,000 HP at the flywheel with nitrous, turbo(s) or a supercharger.
Another alternative would an engine from the LSx series.... known as the Gen 3 SBC (but totally different in most aspects). Introduced in the Corvette in 1997, and in the Firebird/Camaro in 1998. Virtually unlimited HP, dependent only on your wallet or the credit limit on your cards.
Inherent to the installation of any fuel injected engine is the matching wiring harness and ECM/PCM. Interfacing the later model harnesses to your body connectors becomes a bit of a challenge. Again, sticking with the L98 solves the harness mismatches.
Alternatives include the Gen 2 SBC LT1 350ci (5,7L) V8 engine that was used in the 4th Gens from 93-97. Torque almost at good as the L98, and another 1,000 RPM if heavy breathing. T56 bolts right up with no adapters. But, the LT1 has issues with the Optispark distributor, which GM conveniently located under the weep holes for the water pump. But.... you can easily make up to 500HP at the flywheel, normally aspirated. And the block is good for in excess of 1,000 HP at the flywheel with nitrous, turbo(s) or a supercharger.
Another alternative would an engine from the LSx series.... known as the Gen 3 SBC (but totally different in most aspects). Introduced in the Corvette in 1997, and in the Firebird/Camaro in 1998. Virtually unlimited HP, dependent only on your wallet or the credit limit on your cards.
Inherent to the installation of any fuel injected engine is the matching wiring harness and ECM/PCM. Interfacing the later model harnesses to your body connectors becomes a bit of a challenge. Again, sticking with the L98 solves the harness mismatches.
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A 383 cubic inch engine is built from the 350ci engine, by boring the cylinders "30 over", which is increasing the cylinder bore from 4.000" to 4.030", and replacing the 350's 3.48" stroke crank with a 3.75" stroke crankshaft. An opportunity to add almost 10% extra displacement, and relatively inexpensive My LT1 is 381ci, same 3.75" stroke, but we limited the bore to 4.020", to provide a bit more cylinder wall thickness/strength, to handle the 300-shot of nitrous.
Also popular, when rebuilding an L98 350 to only bore it to 4.030, keeping the 3.48" stroke. That yields 355ci.
The SBC is a very flexible engine, capable of displacement upwards of 427ci. $$$$ goes up with the displacement.
Also popular, when rebuilding an L98 350 to only bore it to 4.030, keeping the 3.48" stroke. That yields 355ci.
The SBC is a very flexible engine, capable of displacement upwards of 427ci. $$$$ goes up with the displacement.
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16,122 Posts
Depends on your budget and how much work you want to do. The L98, with some upgrades can provide "tire melt", particularly with a high stall torque converter, and some 3.73:1 gears. It's a direct bolt in. Will need suspension upgrades, but that's true for any case where you upgrade HP and torque.
The other two engines will need to be adapted to the 3rd Gen chassis. The computers (PCM)/harness will need to be interfaced to the body. I really think you are better off with the L98 and some upgrades, given your description of your goals.
The other two engines will need to be adapted to the 3rd Gen chassis. The computers (PCM)/harness will need to be interfaced to the body. I really think you are better off with the L98 and some upgrades, given your description of your goals.
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