Lexus SC400
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Launching!
Joined: Aug 2003
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From: Phoenix, AZ
Lexus SC400 Do you guys think a LS1 with a M6 would fit in a Lexus SC300 or 400 without too much trouble. I been looking at a few and thought that might be a cool swap. In Japan they made some with Supra motors in them so maybe that would be another option too.
Thread Starter
Launching!
Joined: Aug 2003
Posts: 216
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From: Phoenix, AZ
Originally Posted by OldNovaGuy
Probably, but you could get as much HP out of the V8 in the SC400 with a little work.
your better off starting with the 300. if im not mistaken, its the same str8 6 as the supra. the str8 6 is a VERY good engine. my buddys got it in his land cruiser and that thing has some power to it. research like rod millen and all those toyota specialists. i love toyotas. i had a 92 6cyl camry before my fbody. that car was ten times more fun then my z28 IMHO. 
once i save up some money, im gonna buy another old camry for a DD. that thing was amazing. just my 2 cents
Jacob
once i save up some money, im gonna buy another old camry for a DD. that thing was amazing. just my 2 centsJacob
Thread Starter
Launching!
Joined: Aug 2003
Posts: 216
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From: Phoenix, AZ
Originally Posted by qwikz28
your better off starting with the 300. if im not mistaken, its the same str8 6 as the supra. the str8 6 is a VERY good engine. my buddys got it in his land cruiser and that thing has some power to it. research like rod millen and all those toyota specialists. i love toyotas. i had a 92 6cyl camry before my fbody. that car was ten times more fun then my z28 IMHO. once i save up some money, im gonna buy another old camry for a DD. that thing was amazing. just my 2 cents
Jacob
once i save up some money, im gonna buy another old camry for a DD. that thing was amazing. just my 2 centsJacob
Originally Posted by LPCWS6
Yeah I saw a couple of turbo kits for the SC300 that don't look too bad and I also saw a few that had the twin turbo Supra motor swapped in them. I would rather have a built LS1 with a turbo though. Either way I'm not going to do anything any time soon, just getting some Ideas.
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Staging Lane
Joined: Aug 2004
Posts: 62
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sc400
Originally Posted by LPCWS6
I've been doing some research and it would take a lot of work to get a stock SC400 V8 from the year I'm looking at to make LS1 power. I saw one with a turbo on it only pushing like 325 RWHP or something.
The same basic engine is used in the Toyota P/U and you can change the PCM program and get 325 out of it. This engine is also used for Indy style race cars. There is unbelievable potential in this engine.
Teching In
Joined: Jul 2003
Posts: 9
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From: Cali-4-Ny-Ay
Get an IS300 minus the motor and swap the ls1 in there. They're already RWD and they are the ones with the str8-6 usually. SC300 and 400 are V blocks I believe. Actually, now that I think about it maybe the SC300 is a str8-6 but the 400 and SC430 (another sick lexus) are v's.
I mentioned the IS300 minus the motor because in my opinion, those motors are mean. So, if you did get an IS300 with the motor you can rebuild the motor for whatever you want or turbo it and that thing will scream.
Sorry so long, but you mentioned ideas and I'm full of those suckers. I can't tell you my personal toyota car idea because it will make me rich one day
P.S. I'll see if i can find some pics of a couple IS turbo's on the net. The ones I'm thinkin of have little done to them but haul booty!!!
I mentioned the IS300 minus the motor because in my opinion, those motors are mean. So, if you did get an IS300 with the motor you can rebuild the motor for whatever you want or turbo it and that thing will scream.
Sorry so long, but you mentioned ideas and I'm full of those suckers. I can't tell you my personal toyota car idea because it will make me rich one day
P.S. I'll see if i can find some pics of a couple IS turbo's on the net. The ones I'm thinkin of have little done to them but haul booty!!!
Thread Starter
Launching!
Joined: Aug 2003
Posts: 216
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From: Phoenix, AZ
Originally Posted by OldNovaGuy
They forgot to put gas in it then!
The same basic engine is used in the Toyota P/U and you can change the PCM program and get 325 out of it. This engine is also used for Indy style race cars. There is unbelievable potential in this engine.
The same basic engine is used in the Toyota P/U and you can change the PCM program and get 325 out of it. This engine is also used for Indy style race cars. There is unbelievable potential in this engine.
Originally Posted by boosted6
Get an IS300 minus the motor and swap the ls1 in there. They're already RWD and they are the ones with the str8-6 usually. SC300 and 400 are V blocks I believe. Actually, now that I think about it maybe the SC300 is a str8-6 but the 400 and SC430 (another sick lexus) are v's.
I mentioned the IS300 minus the motor because in my opinion, those motors are mean. So, if you did get an IS300 with the motor you can rebuild the motor for whatever you want or turbo it and that thing will scream.
Sorry so long, but you mentioned ideas and I'm full of those suckers. I can't tell you my personal toyota car idea because it will make me rich one day
P.S. I'll see if i can find some pics of a couple IS turbo's on the net. The ones I'm thinkin of have little done to them but haul booty!!!
I mentioned the IS300 minus the motor because in my opinion, those motors are mean. So, if you did get an IS300 with the motor you can rebuild the motor for whatever you want or turbo it and that thing will scream.
Sorry so long, but you mentioned ideas and I'm full of those suckers. I can't tell you my personal toyota car idea because it will make me rich one day
P.S. I'll see if i can find some pics of a couple IS turbo's on the net. The ones I'm thinkin of have little done to them but haul booty!!!
Staging Lane
Joined: Aug 2004
Posts: 62
Likes: 0
Just like the North Americans have done with the GEN III variants, the ASIAN and other world markets have developed the available engines into unbelievable power plants. You can buy the performance parts: pistons, cams and throttle body from APEXI to easily turn a 4 liter Lexus V8 into a 4 cam SMOOTH 400+ hp screamer. Come on, this is the technology of the future. It is EASIER to build horsepower with multi-cam engines. That is what was learned by GM with the Northstar. But it is an expensive technology. GM is wringing all the life they can from the pushrod V8 because it costs less to mass produce.
Don't misinterpret my comments, I am a 52 year old telecommuncations engineer who grew up bustin knuckles on these engines and I love them dearly. I am currently building a 400+ hp 5.3 GEN III for my 66 Nova. But the only reason I am not using a Northstar is i wanted to build a new technology engine with as close to the same cubic inch displacement as the original L79 327 ci/365hp that came in the 66 Nova.
The inevitable change to multi cam/multi valve engine technology is in the near future. It has already happened at Ford and will have to happen at all other manufacturers just to keep up with the emission requirements. So hang on to that perfectly good HotRoddable engine and just do a little more research on how you can be the first to squeze 500hp out of a 4.0.
Don't misinterpret my comments, I am a 52 year old telecommuncations engineer who grew up bustin knuckles on these engines and I love them dearly. I am currently building a 400+ hp 5.3 GEN III for my 66 Nova. But the only reason I am not using a Northstar is i wanted to build a new technology engine with as close to the same cubic inch displacement as the original L79 327 ci/365hp that came in the 66 Nova.
The inevitable change to multi cam/multi valve engine technology is in the near future. It has already happened at Ford and will have to happen at all other manufacturers just to keep up with the emission requirements. So hang on to that perfectly good HotRoddable engine and just do a little more research on how you can be the first to squeze 500hp out of a 4.0.
Might want to contact Sound Performance in Bloomingdale IL and ask Larry, Ivan or Max if they think an LS1 would fit in there okay... They have modded some 300's for twin turbos and they also know what LS1's look like.
Originally Posted by OldNovaGuy
Just like the North Americans have done with the GEN III variants, the ASIAN and other world markets have developed the available engines into unbelievable power plants. You can buy the performance parts: pistons, cams and throttle body from APEXI to easily turn a 4 liter Lexus V8 into a 4 cam SMOOTH 400+ hp screamer. Come on, this is the technology of the future. It is EASIER to build horsepower with multi-cam engines. That is what was learned by GM with the Northstar. But it is an expensive technology. GM is wringing all the life they can from the pushrod V8 because it costs less to mass produce.
The inevitable change to multi cam/multi valve engine technology is in the near future. It has already happened at Ford and will have to happen at all other manufacturers just to keep up with the emission requirements. So hang on to that perfectly good HotRoddable engine and just do a little more research on how you can be the first to squeze 500hp out of a 4.0.
The inevitable change to multi cam/multi valve engine technology is in the near future. It has already happened at Ford and will have to happen at all other manufacturers just to keep up with the emission requirements. So hang on to that perfectly good HotRoddable engine and just do a little more research on how you can be the first to squeze 500hp out of a 4.0.
You might get the hp but you won't get the trq of the larger engine. DOHC engines have more internal friction, and are generally smaller cubic inch wise when compared to OHV engines. Torque is key to moving a vehicle as heavy as an LS400, that's where the larger cubic inch OHV engines come into play and smaller DOHC engines fall short. There are advantages and dissadvantages to both, but the LS series of engines has removed many of the dissadvantages of OHV, yet kept the main strong points. Staging Lane
Joined: Aug 2004
Posts: 62
Likes: 0
Originally Posted by FAST LS1
DOHC engines aren't perfect either, they have drawbacks compared to the LS based engines. The Northstar is a physically larger engine, with more mass higher in the engine than an LSx, yet the LS based engines are much larger cubic inch wise. For the same size you could have a lighter aluminum 402ci (6.4L) LS2 stroker, or use the heavier 4.0L DOHC stock engine and rev it to the sky You might get the hp but you won't get the trq of the larger engine. DOHC engines have more internal friction, and are generally smaller cubic inch wise when compared to OHV engines. Torque is key to moving a vehicle as heavy as an LS400, that's where the larger cubic inch OHV engines come into play and smaller DOHC engines fall short. There are advantages and dissadvantages to both, but the LS series of engines has removed many of the dissadvantages of OHV, yet kept the main strong points.
You might get the hp but you won't get the trq of the larger engine. DOHC engines have more internal friction, and are generally smaller cubic inch wise when compared to OHV engines. Torque is key to moving a vehicle as heavy as an LS400, that's where the larger cubic inch OHV engines come into play and smaller DOHC engines fall short. There are advantages and dissadvantages to both, but the LS series of engines has removed many of the dissadvantages of OHV, yet kept the main strong points.The upper engine mass is a necessary evil to accomodate the cams and is simply a packaging issue. This doesn't negatively affect performance . The use of a smaller bore size is an advantage gained through enhanced engine performance.
The GEN III engines haven't removed any of the negatives of a pushrod engine. They have compensated with roller lifters and reduced weight of components. But the basic disadvantages associated with the indirect method of valve actuation remain.
The LSx improved performance is from application of hot rodder discoveries. Reduced weight components, better head design, higher lift cams and last but certainly not least enhanced engine management capabilities.
It is a great engine, but until the OHV engine designers come up with a way to operate multiple valves on seperate timing curves with less parts they will never be able to beat the performance of DOHC.
DOHC engines have advantages in all out applications, but in terms of a modern EFI engine that common people can afford what's out there that even competes with an LS based engine?
I don't see any modern DOHC v-8's putting 300+rwhp and especially not 330+rwtrq out stock besides the supercharged Ford 4.6L, which costs twice as much as an LS based engine, weighs a lot more, and is physically much larger.
Cost, weight, and size are also points that must be considered when talking about performance and efficiency, especially for people swapping said engine into another car.
All out thermodynamic efficiency goes to the DOHC 4v per cyl head design, but real world performance goes to the lowly OHV LS engines.
I don't see any modern DOHC v-8's putting 300+rwhp and especially not 330+rwtrq out stock besides the supercharged Ford 4.6L, which costs twice as much as an LS based engine, weighs a lot more, and is physically much larger.
Cost, weight, and size are also points that must be considered when talking about performance and efficiency, especially for people swapping said engine into another car.
All out thermodynamic efficiency goes to the DOHC 4v per cyl head design, but real world performance goes to the lowly OHV LS engines.
