LT4 Supercharged into a thirdgen?
01-16-2016 | 11:48 AM
#1
Thread Starter
Junior Member
Joined: Jun 2015
Posts: 36
Likes: 0
From: Iowa
Car: 1992 Camaro RS under construction
Engine: Building 500 rwhp ls1
Transmission: 4L85E
Axle/Gears: Moser Ford 9" 3.70
LT4 Supercharged into a thirdgen?
I have looked around trying to find a thread on this, but all I can seem to find is people asking about putting an LT4 kit on their LT1s.
my guess is since you can convert your LT1 to be just like an LT4, the LT4 is an LT1 but just basically bored bigger, hotter cam, smaller heads, higher compression, and its supercharged... also of course, the LT4 lays down a ton more power.
now ive got a few questions. Are the motor mounts the same? is the throttle cable driven or electrically? would an lt1 computer work on the lt4? i know the wiring harness wont without a few adapters. what are more differences between an lt1 and an lt4? also ls3 vs lt4?
have anymore discussion just drop it below.
my guess is since you can convert your LT1 to be just like an LT4, the LT4 is an LT1 but just basically bored bigger, hotter cam, smaller heads, higher compression, and its supercharged... also of course, the LT4 lays down a ton more power.
now ive got a few questions. Are the motor mounts the same? is the throttle cable driven or electrically? would an lt1 computer work on the lt4? i know the wiring harness wont without a few adapters. what are more differences between an lt1 and an lt4? also ls3 vs lt4?
have anymore discussion just drop it below.
01-16-2016 | 12:55 PM
#2
Joined: Sep 2004
Posts: 5,873
Likes: 223
From: Chicagoland Suburbs
Car: 1989 Trans Am GTA
Engine: LT1, AFR 195cc, 231/239 LE cam.
Transmission: M28 T56
Axle/Gears: 3.23 10bolt waiting to explode.
Re: LT4 Supercharged into a thirdgen?
I have looked around trying to find a thread on this, but all I can seem to find is people asking about putting an LT4 kit on their LT1s.
my guess is since you can convert your LT1 to be just like an LT4, the LT4 is an LT1 but just basically bored bigger, hotter cam, smaller heads, higher compression, and its supercharged... also of course, the LT4 lays down a ton more power.
now ive got a few questions. Are the motor mounts the same? is the throttle cable driven or electrically? would an lt1 computer work on the lt4? i know the wiring harness wont without a few adapters. what are more differences between an lt1 and an lt4? also ls3 vs lt4?
have anymore discussion just drop it below.
my guess is since you can convert your LT1 to be just like an LT4, the LT4 is an LT1 but just basically bored bigger, hotter cam, smaller heads, higher compression, and its supercharged... also of course, the LT4 lays down a ton more power.
now ive got a few questions. Are the motor mounts the same? is the throttle cable driven or electrically? would an lt1 computer work on the lt4? i know the wiring harness wont without a few adapters. what are more differences between an lt1 and an lt4? also ls3 vs lt4?
have anymore discussion just drop it below.
Do you even Google? Do you search these forums for the answers? Cause anyone who's been around engines long enough knows that you have zero experience with engines and you won't be doing this swap at all unless you've got about $30,000 in the bank to have someone do it for you and drain your wallet.
the LT4 is an LT1 but just basically bored bigger, hotter cam, smaller heads, higher compression, and its supercharged
I'll even google it for you.
http://www.chevrolet.com/performance...gines/lt1.html
Code:
LT1 TECH SPECS Part Number: 19328728 or 19329997 Camshaft Duration (@.050 in.): 200° intake / 212° exhaust Engine Type: Direct injection spark ignition Gen V Small-Block V8 Displacement (cu. in.): 376 (6.2L) Bore x Stroke (in.): 4.065 x 3.622 (103.25 x 92mm) Block (P/N 12619171): Cast aluminum with 6-bolt nodular iron main bearing caps Crankshaft: Forged steel Connecting Rods: Forged powdered metal Pistons (P/N 12662802): Eutectic Camshaft Type (P/N 12629512): Billet steel roller Camshaft Lift (in.): 200° intake / 212° exhaust Valve Lift (in): .561 intake/ .531 exhaust Cylinder Heads (P/N 12620544): Aluminum, rectangular port D/I Balanced: Internal Valve Size (in.): 2.13 intake / 1.59 exhaust Compression Ratio: 11.5:1 Rocker Arms (P/N 12619829 int): Investment-cast, roller trunnion Rocker Arms (P/N 12619829 exh): Investment-cast, roller trunnion Rocker Arm Ratio: 1.81:1 Recommended Fuel: Premium Maximum Recommended rpm: 6600 Reluctor Wheel: 58X
Code:
LT4 TECH SPECS Part Number: 19332621 or 19332702 Pistons (P/N right hand 12674094 and left hand 12674093): Forged aluminum with internal ribs; flat-top crown Engine Type: Direct injection spark ignition Gen-V Small-Block V8 Displacement (cu. in.): 376 (6.2L) Bore x Stroke (in.): 4.06 x 3.62 (103.25 x 92 mm) Block (P/N 12619171): Cast aluminum with 6-bolt nodular iron main bearing caps Crankshaft: Forged steel Connecting Rods: Powdered-metal steel Camshaft Type (P/N 12642245): Hydraulic roller Maximum Recommended rpm: 6600 Camshaft Lift (in.): 200° intake / 212° exhaust Valve Lift (in): .492 intake / .551 exhaust Camshaft Duration (@.050 in.): 189° intake / 223° exhaust Cylinder Heads (P/N 12646959): A356-T6 rotocast aluminum Valve Size (in.): 2.13 intake / 1.59 exhaust Compression Ratio: 10.0:1 Recommended Fuel: Premium
01-17-2016 | 09:46 AM
#3
Joined: Jun 2005
Posts: 7,962
Likes: 221
From: NC
Car: 91 Trans Am
Engine: LSA
Transmission: T56 AWD
Axle/Gears: 8.8 4.10
Re: LT4 Supercharged into a thirdgen?
Both fit the chassis and are basic GEN V conversions. Much like proposed LS7/9 swaps, Ill wait until you have a LT4 to go into detail
Last edited by Pocket; 01-17-2016 at 11:38 AM.
01-17-2016 | 09:57 AM
#4
Joined: Sep 2004
Posts: 5,873
Likes: 223
From: Chicagoland Suburbs
Car: 1989 Trans Am GTA
Engine: LT1, AFR 195cc, 231/239 LE cam.
Transmission: M28 T56
Axle/Gears: 3.23 10bolt waiting to explode.
Re: LT4 Supercharged into a thirdgen?
But I'm guessing he can't afford the pullout or the crate engine.
01-17-2016 | 11:22 AM
#5
Supreme Member
Joined: Jul 2007
Posts: 1,293
Likes: 4
From: Howard Lake, MN
Car: 86 Camaro
Engine: 355- hopefully a 5.3 this summer
Transmission: 700r4
Axle/Gears: 3.42
Re: LT4 Supercharged into a thirdgen?
the LT4 is an LT1 short block with a different cam, heads, intake, and roller rocker arms. they also had plastic valve covers... they might have also used different pistons, but they are the same bore and stroke as an LT1, which is itself just a 350 with a goofy cooling system and the distributor mounted behind the water pump..
any LT1/LT4 bolts right in place of any small block in any car, truck, or boat. exhaust hooks right up. you need different coolant hoses, tho, so it's not a direct bolt in..
unless you are talking about the new direct injected/supercharged Corvette engines, then they are totally different. i don't think you can even use LS conversion parts like motor mounts and headers for them due to the changes they made to them compared to earlier gen 3/ gen 4 engines..
any LT1/LT4 bolts right in place of any small block in any car, truck, or boat. exhaust hooks right up. you need different coolant hoses, tho, so it's not a direct bolt in..
unless you are talking about the new direct injected/supercharged Corvette engines, then they are totally different. i don't think you can even use LS conversion parts like motor mounts and headers for them due to the changes they made to them compared to earlier gen 3/ gen 4 engines..
01-17-2016 | 11:34 AM
#6
Joined: Sep 2004
Posts: 5,873
Likes: 223
From: Chicagoland Suburbs
Car: 1989 Trans Am GTA
Engine: LT1, AFR 195cc, 231/239 LE cam.
Transmission: M28 T56
Axle/Gears: 3.23 10bolt waiting to explode.
Re: LT4 Supercharged into a thirdgen?
the LT4 is an LT1 short block with a different cam, heads, intake, and roller rocker arms. they also had plastic valve covers... they might have also used different pistons, but they are the same bore and stroke as an LT1, which is itself just a 350 with a goofy cooling system and the distributor mounted behind the water pump..
any LT1/LT4 bolts right in place of any small block in any car, truck, or boat. exhaust hooks right up. you need different coolant hoses, tho, so it's not a direct bolt in..
unless you are talking about the new direct injected/supercharged Corvette engines, then they are totally different. i don't think you can even use LS conversion parts like motor mounts and headers for them due to the changes they made to them compared to earlier gen 3/ gen 4 engines..
any LT1/LT4 bolts right in place of any small block in any car, truck, or boat. exhaust hooks right up. you need different coolant hoses, tho, so it's not a direct bolt in..
unless you are talking about the new direct injected/supercharged Corvette engines, then they are totally different. i don't think you can even use LS conversion parts like motor mounts and headers for them due to the changes they made to them compared to earlier gen 3/ gen 4 engines..
He's talking about the new Gen5 GDI engines. Not the Gen2 SBCs.
01-19-2016 | 03:20 PM
#7
Member
Joined: Jun 2004
Posts: 191
Likes: 4
Re: LT4 Supercharged into a thirdgen?
I agree with Pocket. Get an LT4 and we'll go into detail and help you out as much as we can. It can be done. Engine mounts are the same. We have successfully ran an LT1 on the engine dyno stand alone. The LT4 is no more difficult. It will be expensive.
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04-24-2016 | 02:08 PM
#8
Junior Member
Joined: Apr 2016
Posts: 1
Likes: 0
Re: LT4 Supercharged into a thirdgen?
Hi nev at this site.
I am step ping from 86 LS1 Transam. to 1998 Transam.
Sorry to bring this op here at gen 3 forum. Ani way All problem simuler.
Just from Radley GM ordered a Create Supercharge LT4.
Problems ?? port outlet simuler to LS3 head ?? difference bolt hole then no problem.
Servo ?? any ides ?? Electric ster ring ?? maby.
Lid hight i think no problem. then LS9 is 60 mm to higt for thi gen 3-4 Camaro/birds.
as i can see at thi net LT4 is 90 mm lover then thi LS9 then no problem.
Ani thing els some one think at ??
Thanks fro Copenhagen
I am step ping from 86 LS1 Transam. to 1998 Transam.
Sorry to bring this op here at gen 3 forum. Ani way All problem simuler.
Just from Radley GM ordered a Create Supercharge LT4.
Problems ?? port outlet simuler to LS3 head ?? difference bolt hole then no problem.
Servo ?? any ides ?? Electric ster ring ?? maby.
Lid hight i think no problem. then LS9 is 60 mm to higt for thi gen 3-4 Camaro/birds.
as i can see at thi net LT4 is 90 mm lover then thi LS9 then no problem.
Ani thing els some one think at ??
Thanks fro Copenhagen
05-10-2016 | 10:06 AM
#9
Joined: Jun 2005
Posts: 7,962
Likes: 221
From: NC
Car: 91 Trans Am
Engine: LSA
Transmission: T56 AWD
Axle/Gears: 8.8 4.10
Re: LT4 Supercharged into a thirdgen?
The GEN V LT platform has a unique exhaust port, so you'll have to custom make headers or find some OEM manifolds that will fit. Since the platform is so new, finding completed swaps to take advice from will be unlikely
The bellhousing pattern is unique. You may get away with a 360* scattershield with a few holes redrilled. Mounts are likely unique, but thats part of any new engine swap and are the easiest to fab in-house
Starter is the same motor/solenoid combo GM has used for the last 40 years. Main battery cable in and a solenoid wire connected to the IGN switch
With new federal mandates, the LT platform uses the same CANBUS High speed LAN communications system as GEN IV engines with some refinements. From an electronics perspective, refer to GEN IV conversions for output interface compatibilities
The bellhousing pattern is unique. You may get away with a 360* scattershield with a few holes redrilled. Mounts are likely unique, but thats part of any new engine swap and are the easiest to fab in-house
Starter is the same motor/solenoid combo GM has used for the last 40 years. Main battery cable in and a solenoid wire connected to the IGN switch
With new federal mandates, the LT platform uses the same CANBUS High speed LAN communications system as GEN IV engines with some refinements. From an electronics perspective, refer to GEN IV conversions for output interface compatibilities
05-16-2016 | 06:47 PM
#10
Junior Member
Joined: Apr 2015
Posts: 7
Likes: 0
Re: LT4 Supercharged into a thirdgen?
Im just looking for a straightforward answer here. Im looking into investing in a new supercharged lt4 650hp 650tq in the new 2016 corvettes, I wont be doing it myself ill have a mechanic of mine do it, but is it very similar to an lt1 swap?? basically just tell me the big stuff you had to do to get an lt1 to fit, ive heard people say they had to dent the passenger side frame for the a/c to be fit into the car, or the passenger side exhaust needs mods and the power steering pump is on the passenger side, etc.. and how similar is the lt4? in terms of engine size, bolt pattern, pumps, hoses etc, just a general outline, cuz i would hate to buy it then have my mechanic tell me he cant do it. Also would a t56 and/or 700r4 work with the engine ( yes ill probably need a kit but are they out there?)
Thanks!
Thanks!
05-16-2016 | 08:24 PM
#11
Joined: Sep 2004
Posts: 5,873
Likes: 223
From: Chicagoland Suburbs
Car: 1989 Trans Am GTA
Engine: LT1, AFR 195cc, 231/239 LE cam.
Transmission: M28 T56
Axle/Gears: 3.23 10bolt waiting to explode.
Re: LT4 Supercharged into a thirdgen?
Im just looking for a straightforward answer here. Im looking into investing in a new supercharged lt4 650hp 650tq in the new 2016 corvettes, I wont be doing it myself ill have a mechanic of mine do it, but is it very similar to an lt1 swap?? basically just tell me the big stuff you had to do to get an lt1 to fit, ive heard people say they had to dent the passenger side frame for the a/c to be fit into the car, or the passenger side exhaust needs mods and the power steering pump is on the passenger side, etc.. and how similar is the lt4? in terms of engine size, bolt pattern, pumps, hoses etc, just a general outline, cuz i would hate to buy it then have my mechanic tell me he cant do it. Also would a t56 and/or 700r4 work with the engine ( yes ill probably need a kit but are they out there?)
Thanks!
Thanks!
You are asking the question like its a simple answer and you can just get a factory manual. You can't. So until you go ahead and do it yourself, and come back with real, specifically aimed questions, the experts here can't answer that yet.
If you got the money, and you want to assume the risk, by all means, buy the stupid crate engine, and start installing it. This is hot-rodding, there is no Lego Manual here.
05-17-2016 | 10:06 AM
#12
Member
Joined: Dec 2014
Posts: 431
Likes: 1
From: Garland, TX
Car: 2014 Z28 #80
Re: LT4 Supercharged into a thirdgen?
You are also, I believe, getting the LT1's on here confused. At least 95% of the time, the LT1 that people are swapping into their cars is from 93-98, NOT the new one. I'm sure someone is trying to swap that, but I doubt you'll find a whole lot of info on it here, seeing as how new it really is, as well as how much it costs.
You are pretty much on an island on this one. Besides that, people here generally do the work themselves, so asking what your mechanic will need to know is kind of... useless? If he won't know what he's doing, then maybe you shouldn't go $15-20k deep into something like this as it's NEVER easy, no matter how many threads on swaps there are. It makes it EASIER, but it's still not easy.
My advice: Think long and hard about this.
You are pretty much on an island on this one. Besides that, people here generally do the work themselves, so asking what your mechanic will need to know is kind of... useless? If he won't know what he's doing, then maybe you shouldn't go $15-20k deep into something like this as it's NEVER easy, no matter how many threads on swaps there are. It makes it EASIER, but it's still not easy.
My advice: Think long and hard about this.
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