Has anyone out there ever heard of an LS1 /4 speed auto going into a 90-96 Q45? I am thinking of trying it. I can get the complete engine + transmission, tested and running with in independent wiring harness that only needs a 12v power source. I have the money to do it. I do not expect to get working gauges out of the deal, but I need the air, power steering and power brakes to work. Speedometer would be nice, but if I can't get it working that is fine. I have done a 350 tune port into a 260Z, so I know these projects are a lot of work, but I think the results would be worth it.
Does anyone know if there is room in there for the swap, particularly between the shock towers, and the trans tunnel? I don't mind a little hammer widening of the trans tunnel.The electronics are not a problem, but if it physically won't fit I am stuck.
Please no flaming. If anyone can tell me how to get 450 reliable and torque rich hp out of the 4.5 for less than the 10k this should cost me, I would do it. I am also not a big fan of forced induction or nitrous.
ls1 into a Q45
"Please no flaming. If anyone can tell me how to get 450 reliable and torque rich hp out of the 4.5 for less than the 10k this should cost me, I would do it. I am also not a big fan of forced induction or nitrous."
You can get that power RIGHT NOW out of a VH, by supercharging...
You arn't going to 450 hp out of a N/A Q.. that's 100hp per litre...
You can get that power RIGHT NOW out of a VH, by supercharging...
You arn't going to 450 hp out of a N/A Q.. that's 100hp per litre...
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psychic_mechanic
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Re: ls1 into a Q45
motorhead wrote:I am also not a big fan of forced induction or nitrous.
Need to find a motor/transmission set from both and take a bunch of measurements. Interface control as well as envelope dimensions.
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AZhitman
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I like this guy. 
I can't imagine it wouldn't work. Actually, there was a 454 Q45 for sale on ebay a while back. Search for a member by the name of "Pali Prince", he was bidding on it and talked to the owner.
We NEED an LS1-powered Q.
Also, look up member "Aries", as he has an LT1-powered 240sx that's SCARY fast.
Welcome to NICO!!!
I can't imagine it wouldn't work. Actually, there was a 454 Q45 for sale on ebay a while back. Search for a member by the name of "Pali Prince", he was bidding on it and talked to the owner.
We NEED an LS1-powered Q.
Also, look up member "Aries", as he has an LT1-powered 240sx that's SCARY fast.
Welcome to NICO!!!
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Need4Speed
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HeavyDuty
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- Car: 1995 Infiniti Q45
95 Nissan 240SX S14
96 Nissan D21
06 Nissan 350Z Z33
Lots to talk about here. 
An LS1 is not arcane, pushrods, yes, dinosaur, no. Diminutive in comparison to the VH. There's even a non-independent wiring harness available from GMPP.
There are BB Chev 427 ZL-1's available, exxxxpensive, but available, all aluminum,
There are also C5R blocks running around with 427 CI, in small block form.........NASTY.
As long as we're bench racing, why not a 03 Cobra crate motor? Bash if you will, but cast iron block, steel crank, Manley rods & forged pistons built to factory specs (even if those specs are +/- a hammer handle). The first few the guys at Superchips here got were putting 390 to the tires. *Stock* 10K list price for a crate motor, complete from oil pan to accessories, blower, etc.
I don't believe there is but *maybe* two or three other forged internals crate motors available from GM, Ford, or Chrysler.
Oh yeah, on the HEMI thing, as long as I'm espousing to watch myself type:
A real mans HEMI is a 426, and said man keeps spare rocker arms in the trunk as a ballast. Have you seen the cc pics of the new (ahem, cough) HEMI? Yes, it's a hemispherical cc, but the plug holes aren't in the center like the original design. Also, notice it's not a 5.2 (318), a 5.57 (340), or a 5.89 (360). Maybe the bowtie camp had something after all?
An LS1 is not arcane, pushrods, yes, dinosaur, no. Diminutive in comparison to the VH. There's even a non-independent wiring harness available from GMPP.
There are BB Chev 427 ZL-1's available, exxxxpensive, but available, all aluminum,
There are also C5R blocks running around with 427 CI, in small block form.........NASTY.
As long as we're bench racing, why not a 03 Cobra crate motor? Bash if you will, but cast iron block, steel crank, Manley rods & forged pistons built to factory specs (even if those specs are +/- a hammer handle). The first few the guys at Superchips here got were putting 390 to the tires. *Stock* 10K list price for a crate motor, complete from oil pan to accessories, blower, etc.
I don't believe there is but *maybe* two or three other forged internals crate motors available from GM, Ford, or Chrysler.
Oh yeah, on the HEMI thing, as long as I'm espousing to watch myself type:
A real mans HEMI is a 426, and said man keeps spare rocker arms in the trunk as a ballast.
Have you seen the cc pics of the new (ahem, cough) HEMI? Yes, it's a hemispherical cc, but the plug holes aren't in the center like the original design. Also, notice it's not a 5.2 (318), a 5.57 (340), or a 5.89 (360). Maybe the bowtie camp had something after all?-
sijoko
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The only reasons that I can think of to install an LS1 is cost and parts availability.
If I were to do it, I would go with the six-speed trans also.
How much would the whole thing come out to? If the budget is 10k, then you can hook up the VH45DE (which I humbly submit is a piece of engineering art).
You could use a positive displacement supercharger ( a kit has already been developed) or go the route of a turbo. You could do a JYturbo setup for around $3k, if you do the work yourself. With just 7 psi of boost, you would be over 400hp.
As far as displacement is concerned, it would be nice if someone got the specs for the crankshaft in the Nissan Titan engine. If it fits, then that would get you at least a 5.1 liter (this is with a 1mm overbore and the 92mm stroke of the Titan crankshaft).
In the end, it would be a cost versus benefits decision. I would go with the LS1 if there was no way to get the power from the VH45DE at a decent price.
-sijoko
If I were to do it, I would go with the six-speed trans also.
How much would the whole thing come out to? If the budget is 10k, then you can hook up the VH45DE (which I humbly submit is a piece of engineering art).
You could use a positive displacement supercharger ( a kit has already been developed) or go the route of a turbo. You could do a JYturbo setup for around $3k, if you do the work yourself. With just 7 psi of boost, you would be over 400hp.
As far as displacement is concerned, it would be nice if someone got the specs for the crankshaft in the Nissan Titan engine. If it fits, then that would get you at least a 5.1 liter (this is with a 1mm overbore and the 92mm stroke of the Titan crankshaft).
In the end, it would be a cost versus benefits decision. I would go with the LS1 if there was no way to get the power from the VH45DE at a decent price.
-sijoko
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Q45tech
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- Car: 1990 Q45 342,400 miles 22 years ownership with original engine
1995 G20t 5 speed 334,000 miles 16" 2002 wheels - 205/50/16 Sr20ve vvl
The new engine families are so different after 1996 that that parts swapping is out of question.......easier to swap in a 5.6 at least it says Nissan........wait a while till they get the bugs out of this US made engine.
Anyway you have to change transmissions and all wiring harnesses so what engine may be immaterial.
Figuring out the wiring [use a 90-93 not the multiplexed 94] should take a month if everything is to work as new.
The newer LS1 [5.65 liters] is narrower than Q engine.
Anyway you have to change transmissions and all wiring harnesses so what engine may be immaterial.
Figuring out the wiring [use a 90-93 not the multiplexed 94] should take a month if everything is to work as new.
The newer LS1 [5.65 liters] is narrower than Q engine.
Q45tech wrote:The newer LS1 [5.65 liters] is narrower than Q engine.
I read in a Car & Driver article about the pushrods compared to the multi valve OHC engine and they mention that with the two valve engine are smaller than the 4 valve ones. The multi valve heads take up more room. With the pushrods, they can make a more compact design.
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psychic_mechanic
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And don't forget Chevy's main goal....keeping costs down. With a pushrod motor they only need to machine one cam and a simple cam drive. Think of the machining and materials saved over a DOHC with 12 feet of chain, chain guides and tensioners.
This is why Chevy had only 4 bolts holding on it's valve covers on the original Small block. Think of that 20 cents saved multiplied over several million engines produced. Who cares if they leak oil as soon as the engine is out of warranty?
This is why Chevy had only 4 bolts holding on it's valve covers on the original Small block. Think of that 20 cents saved multiplied over several million engines produced. Who cares if they leak oil as soon as the engine is out of warranty?
Thanks everyone for your comments. I will try to find the "Pali Prince" and talk to him. If a big block fits, an ls1 should not be a problem. I will ad to this thread as the project goes. I am searching for a shop right now. Regarding weight, total dressed weight of an ls1 is 457lbs. A cam swap before it goes in, good intake, fairly open exhaust should get around 380-400 at the crank. The only thing that will stop me is if I can't get it done for the 10k, not including the price of the Q.
Question for Q45Tech: You mention multiplexed wiring system on 94 and later Q's? Is that a more complicated wiring system? Should I only look at 90-93 cars for a swap? I am planning on removing all wiring related to the engine. The LS1 will not be grafted into the Q's wiring. It will be stand alone management, only connections being a 12v wire, a ground, motor and trans mounts, coolant in and out, ac compressor and power sterring lines. Gauges alll separately wired.
Would using an aftermarket hot wired fuel pump fix the need for the ecu controlled pump? Don't care if the abs brakes work. AC: its hot in FL, got to have it.Can you email me directly at [email protected] ?
This is from http://www.traderonline.com for a 94-96 ImpalaHighest price: $49995 Lowest price: $4588 Average price: $16021 Impalas are expensive, and you get 70hp less than LS1 out of the box. Old police car is an option, or a regular LT1 caprice and paint the chrome and add decent wheels.I am just a real fan of the Q chassis. Free advice beats pay advice, I will post more questions as they arise so everyone can learn from you.Thanks
Why do you recommend a 94-95 Q? I was hoping to use a 90-91 since they are less expensive. (about $2,500 less by my research). I dont care if the ABS and traction control work. Can I hot wire the pump to run full speed all the time?
I have the chance to buy back the 1990 from the friend I sold it to 4 years ago. It needs struts, a brake job and a front seat, but has no accidents and it otherwise in good shape. I can probably get it for around $3,000.
Thanks
I have the chance to buy back the 1990 from the friend I sold it to 4 years ago. It needs struts, a brake job and a front seat, but has no accidents and it otherwise in good shape. I can probably get it for around $3,000.
Thanks
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psychic_mechanic
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ScottJackson
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- Car: 91 Q45, 92 Q45a, 93 Q45, 79 BMW 635CSi, 95 BMW 540i
I've considered doing a 460 ford in a 90-93 Q. It is front sump, you can stroke it to HUGE cubes, and I feel is a better design than a Chevy big block. Take any pre 79 junkyard 429 or 460 block and put in a Scat cast 4.5" stroke crank, Scat 6.7" H beam rods and JE pistons for the bottom end, add the new Kaase SCJ alum heads with Victor intake and decent flat tappet hyd cam and you'd get a smooth idling 600hp 700+ft/lbs 557 cube motor. Use a Ford E40D trans with computer to control shifts and you'd be running. My tape measure says a BBF would easily fit where the VH45 is. I'd go carb to keep it simple and remove the stock fuel pump and lines. Add 1/2" fuel and return lines and a Mallory pump and you'd be set. But the LS1 is a good idea too, if you like the aluminum and fuel injection route. As for power steering you could use the gm pump and get your own lines made to hook it up. A/C you could always do a tacky classic car add on type setup. I would almost bet though that you could make brackets and use the stock Q A/C compressor.