New LS1 Owners - Newbie Tech - which LS engine for fast road/quarter mile runs




paddy155
07-18-2012, 04:19 PM
Ok guys,I am ready to start gathering information for my engine conversion. The car used in the process is a Nissan silvia 180sx. It is extremley clean and has a very good,low milage sr20det engine. It is stock though,so rather than spending my money tuning this engine I have decided to do a ls conversion and try and get some big power. Now the car is mainly a weekend,show car. I am thinking of also taking it for some quarter mile runs also. I am a little unsure as to which engine to use as my base. I am aiming for somewhere in the region of 450hp and may install a supercharger at a later date.
Which engine would be most suitable. Is the ls1 up to the job or should I be looking at another ?
Once I decide which engine to use then I can begin my research.


ULTIMATEORANGESS
07-18-2012, 04:34 PM
ls1s will definitely get it done.


im a fan of going with as much cubes as you can afford.

djfury05
07-18-2012, 04:34 PM
Ls3 imo


paddy155
07-18-2012, 04:55 PM
I am somewhere in between with budget. Not wanting to go for the most expensive option. Somewhere inbetween.

usnfenix
07-18-2012, 05:31 PM
I am somewhere in between with budget. Not wanting to go for the most expensive option. Somewhere inbetween.

between inexpensive but bottem end ls1, and the expensive but high performing ls3, easy choice. build an ls2.

2win_SS
07-18-2012, 06:51 PM
Lq9 with ls3 top end... For NA

grab a 5.3 and build that if your guna run boost later.

ULTIMATEORANGESS
07-18-2012, 06:53 PM
between inexpensive but bottem end ls1, and the expensive but high performing ls3, easy choice. build an ls2.

worked for me.

TransamGCS
07-18-2012, 07:02 PM
lq9/408 stroker will get you 450 no problem and handle boost no problem if you decide to do that in the future. that sr20det is a great engine as well ive seen many people make awsome HP with those engines

Drew-Bot
07-18-2012, 07:20 PM
you could always stroke out an Ls1 right? I have forged internals in my 383 and Im told it could handle anything I throw at it.

2win_SS
07-18-2012, 07:32 PM
you could always stroke out an Ls1 right? I have forged internals in my 383 and Im told it could handle anything I throw at it.

^^^ yes you can stroke a LS1...

gs462
07-18-2012, 07:35 PM
http://ls1tech.com/forums/parts-classifieds/1566671-brand-new-forged-370-lq4.html


this should move that car VERY WELL! and make 450 HP AT THE WHEELS!

Drew-Bot
07-18-2012, 07:45 PM
^^^ yes you can stroke a LS1...

It was meant to be a rhetoric question but I think I might have typed that out wrong. But what i was saying is he can get the cubic inches and have the forged internals to do anything he wants for what I assume would be less then a non stroked out ls2 with forged internals?

garygnu
07-18-2012, 09:37 PM
whats your budget ? a ls2 with l92 heads will make 450+rwhp with a mild cam.do you want to find a good used short block or long block ?or do you want a built engine.you can get a intake/ ignition set from elderbrock for a carb ,to do a stand alone engine.maybe check Texas Speed for some ideas and prices.look in the used parts sections at the bottom of the main forum page.

paddy155
07-19-2012, 12:39 AM
The intention is to buy a sikky conversion kit for my s13 for an LS. I was also going to use Cleveland Pick-A-Part,to purchase the engine ,transmission and everything else from donner car. A few from my car club have used Cleveland for engines and every thing went smoothly with importing to united kingdom.
So basically I need to choose an engine. I'm beginning to think an ls1 engine could be a good base to begin with as it may be the cheapest option. I would prefer to keep the engine pretty simple. I do not really have the experience to build a engine myself. It may be a good idea to buy a good low milage ls1 and research on getting the most out of it. Not unless their is another LS with forged internals.

Have had a think about it and goal is a reliable 500hp motor with room for potential.

paddy155
07-19-2012, 05:02 AM
lq9/408 stroker will get you 450 no problem and handle boost no problem if you decide to do that in the future. that sr20det is a great engine as well ive seen many people make awsome HP with those engines

Yeah,the sr20det is a great engine. Mine is the last model blacktop engine and is low milage. Problem is it's standard. Not a bad thing but anything above 380hp without forged internals and your playing the waiting game before it self distructs. So it would be around 3000 gbp minimum to forge it. Then I need ecu upgrade,turbo kit etc,etc. I'm also looking for realibility. Thier are two people I know who have v8 Silvia's. One has a ls1 and use it for competing in drifting. The other has a ls2 with some minor mods internally and a prochargwe fitted. It's running around 610hp. Both these guy's had sr20det's running above 600hp and sold them to go v8. They must have done that for a reason.

firebird99
07-24-2012, 01:21 AM
5.3 with a ls6 cam and depending on mileage and planned boost add a timing chain,oil pump,head gasket and studs. With a just the 5.3 in there it will scoot but once you add boost it will grow wings and take off...:angel:

90lscamaro
07-24-2012, 08:39 PM
LQ4 w/ L92 heads and a cam... shouldnt be a problem making power

Zlow28
07-26-2012, 12:07 AM
id go for an ls1. Aluminum block would probably suit your silvia a bit better in the weight department.

usmcpi
07-26-2012, 01:00 AM
Ls9 ftw

usmcpi
07-26-2012, 01:02 AM
id go for an ls1. Aluminum block would probably suit your silvia a bit better in the weight department.

60lbs isnt going to affect much, especially when you consider the extra power of the 6.0 over the ls1.

Beastmode89
07-27-2012, 11:47 AM
What you gonna do with that sr20? I got spanked by one when I had a stock ls1 formula. He was making over 270hp to the wheels on that little sr20, and he had almost no money invested.

Orange Juice
07-27-2012, 02:03 PM
I would look for a ls1 and have it stroked to a 383. Keep an eye open for some older Absolute Speed, Carteck, AFR, or any good used head. The bore diameter will be correct. This will keep your cost down and give you a really solid 450-480 hp to the wheels with a bus load of torque with the right cam. You are still going to have to find a 90/90 intake.
I don't know if you could go with boost afterwards. Certainly not going to be able to push it very much.

djfury05
07-27-2012, 04:17 PM
60lbs isnt going to affect much, especially when you consider the extra power of the 6.0 over the ls1.

Actually the iron LQ4/9 have been confirmed at 110 lbs more than the LS1 aluminum block.

I8UR4RD
07-27-2012, 07:38 PM
if on a budget.....6.0 iron block. gut the car. add a cam, some heads, and a 200 shot....youll have a monster. especially if auto with a stall and bolt ons. i went with the AES 390 for my procharged build. i should have no probs as 1000rwhp. hoping for low 9's high 8's. give fraser a call at aes. hell get you rollin fast.