Supradupra!
these kind of arguments are so completetly pointless because all the 'fastest of the fast' relates directly to is the size of the aftermarket for that car and to the length of time it has been around
11 Second Club
Joined: Jan 2005
Posts: 178
Likes: 0
From: hesperia,ca
exactly the 2jz-gtte has been around how long?? like 12 years?? the LS1 has "only" been here for 8. oh and the casper camaro has 1900hp and it's 6.8x pass was on 7 cylinders. expect too see very low sixes or even 5's soon from that car. the chisis is borrowed though so i dont know how long it'll be around.
there is no replacement for displacement, unless its FI
boost same PSI on a motor with 50 more ccs and it will produce more hp than the one that is 50ccs less.
i thought even the import guys understood displacement. i mean they make I4 and I6 stroker kits..
boost same PSI on a motor with 50 more ccs and it will produce more hp than the one that is 50ccs less.
i thought even the import guys understood displacement. i mean they make I4 and I6 stroker kits..
Staging Lane
Joined: Dec 2004
Posts: 94
Likes: 0
From: Indianapolis, In.
Originally Posted by flatlander757
Well since atmospheric pressure is about 14.7psi, then for every 14-15psi of boost on say a 350ci, wouldn't that effectively be the same as a motor with about 700ci?
Staging Lane
Joined: Dec 2004
Posts: 94
Likes: 0
From: Indianapolis, In.
Originally Posted by Cop Car
boost same PSI on a motor with 50 more ccs and it will produce more hp than the one that is 50ccs less.
You are wrong there... Take a 350 cu in Chevrolet vs. a 183 cu in Toyota, put a 76GTS on each of them, the larger engine will only make positive boost sooner but they will both make the same power.
Ultimate power of a turbocharged engine is dictated by the amount of air the turbocharger is capable of flowing and not by the size of the engine.
Staging Lane
Joined: Dec 2004
Posts: 94
Likes: 0
From: Indianapolis, In.
People are making the same hp with 183 cid motors as 350 cid motors all running the same turbocharger. The turbocharger selection and boost level seem to affect power much more than displacement due to the backpressure characteristics.
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Yea i vote for do it as well. Even though a 2jz engine would be a cheaper swap and would provide amazing numbers as it has in all supras, I would love to see an LSX engine in a supra merely for the wow factor and to see if it can be done.
Originally Posted by SleeperSupra
People are making the same hp with 183 cid motors as 350 cid motors all running the same turbocharger. The turbocharger selection and boost level seem to affect power much more than displacement due to the backpressure characteristics.
and with the same turbo and boost level the higher cc motor will make more hp
there is no replacement for displacement
On one hand your wasting your time with the supra chassis (9's with 1000hp). on the other hand the LSX engine combo will blow the 2Gayz away. It's all about cubic dollars but we're not talking about 6'S this is real world. How many cars run nines that you ran against? Not many. Thats my point. You can run Nines in the supra chassis a lot easier with the LSX than the aint six, put a turbo on the 8 to level the playing field and it's a done deal. Anyway, your in LS1TECH.com and in the conversion section so I say do it already! Throw that six in the trash.
TECH Junkie
Joined: Nov 2003
Posts: 3,265
Likes: 1
From: CHITOWN
How about this? who gives a ****, and lets see the car when hes done doing his swap and see how it turns out. As far as I know a blownbigcube Big block(TOPFUEL) 
owns everything when it comes to drag racing.
There are to many opinions, And people sharing crappy information. I think the thread starter just wanted to see a pissing match
. But thats just me 
owns everything when it comes to drag racing.There are to many opinions, And people sharing crappy information. I think the thread starter just wanted to see a pissing match
. But thats just me 11 Second Club
Joined: Jan 2005
Posts: 178
Likes: 0
From: hesperia,ca
Originally Posted by SleeperSupra
You are wrong there... Take a 350 cu in Chevrolet vs. a 183 cu in Toyota, put a 76GTS on each of them, the larger engine will only make positive boost sooner but they will both make the same power.
Ultimate power of a turbocharged engine is dictated by the amount of air the turbocharger is capable of flowing and not by the size of the engine.
Ultimate power of a turbocharged engine is dictated by the amount of air the turbocharger is capable of flowing and not by the size of the engine.
SleeperSupra 
Yea thats what I was thinking. I am no turbo guru by any means nor do I claim to be, but if CI doesnt matter when it comes to power then your saying I could take any well built engine, 2,4,6,8,10 cylinders and put the same turbo on and they will all make the same power? that doesnt sound right but thats just me...i guess i dont know enough about turbos
Staging Lane
Joined: Dec 2004
Posts: 94
Likes: 0
From: Indianapolis, In.
Originally Posted by xbadfishx17x
what the F*** soooo lets say you are running 30psi of boost in your 3.0L 2jz then you get a stroker kit that bumps you to 3.4L and run the same 30ps this wont increase your power output any?? that is bullcrap!! top fuels run 500ci as per the rules, if the rules allowed more trust me all the teams would run more. an engine is an air pump (everyone has heard this) so the more air you move the more power you make (everyone's heard this also) but your saying you'll make the same power with a smaller engine than a larger one. you are seriously disturbed. SleeperSupra
SleeperSupraYou are right that an engine is an air pump but the turbocharger is now the one doing the pumping. Engine power is proportional to the amount of air and fuel that can get into the cylinders. If we want our small engine to perform like a big engine, or simply make our bigger engine produce more power, our ultimate objective is to draw more air into the cylinder. Generally speaking a larger engine will have the potential to make more power as long as it's breathing is not limited by the size of the turbocharger.
Ultimate power of a turbocharged engine is dictated by the amount of air the turbocharger is capable of flowing and not by the size of the engine. If I can cram 2000 cfm in an exgine and X amount of fuel the engine will make XXX power. It doesn't matter if the air and fuel are in a 183 cu in engine or a 500 cu in engine the engine will still make XXX power.
This is very true i think the point is that a 183 cu engine is never gonna handle a 1671 blower like a Top Fuel motor will (the blowers may be even bigger than this not sure). What i mean is a larger displacement engine is going to handle more cfm of air because eventually it becomes impossible to cram a certain amount of air or boost into a engine. If i am thinking correctly in theory a NA 500 cubic inch engine could flow the same cfm of air as a turboed 183 engine. It would do this because their is much more room for the air to go to. So with this in mind to maintain 30 pounds of boost on a 500 cubic inch engine would you not be flowing much much more air compared to a 183 cubic inch engine that is maintaining the same 30 pounds of boost because their is less space to be filled?
Originally Posted by SleeperSupra
No you will NOT increase your peak power output going to a 3.4 liter stroker kit if the turbochargers flow is maxed out. You will only increase spool and power under the curve. If you have a larger turbocharger you will get more power out of it.
You are right that an engine is an air pump but the turbocharger is now the one doing the pumping. Engine power is proportional to the amount of air and fuel that can get into the cylinders. If we want our small engine to perform like a big engine, or simply make our bigger engine produce more power, our ultimate objective is to draw more air into the cylinder. Generally speaking a larger engine will have the potential to make more power as long as it's breathing is not limited by the size of the turbocharger.
Ultimate power of a turbocharged engine is dictated by the amount of air the turbocharger is capable of flowing and not by the size of the engine. If I can cram 2000 cfm in an exgine and X amount of fuel the engine will make XXX power. It doesn't matter if the air and fuel are in a 183 cu in engine or a 500 cu in engine the engine will still make XXX power.
You are right that an engine is an air pump but the turbocharger is now the one doing the pumping. Engine power is proportional to the amount of air and fuel that can get into the cylinders. If we want our small engine to perform like a big engine, or simply make our bigger engine produce more power, our ultimate objective is to draw more air into the cylinder. Generally speaking a larger engine will have the potential to make more power as long as it's breathing is not limited by the size of the turbocharger.
Ultimate power of a turbocharged engine is dictated by the amount of air the turbocharger is capable of flowing and not by the size of the engine. If I can cram 2000 cfm in an exgine and X amount of fuel the engine will make XXX power. It doesn't matter if the air and fuel are in a 183 cu in engine or a 500 cu in engine the engine will still make XXX power.