Best way to 500hp N/A

Best way to 500hp N/A

Author
Discussion

BlueDevil

Original Poster:

414 posts

210 months

Thursday 18th August 2016
quotequote all
As the title says. Looking to get to 500hp normally aspirated on my Monaro VXR LS2. It currently has a wortec cat back and that's it so just wondering what's the best way to go.

stevieturbo

17,472 posts

253 months

Thursday 18th August 2016
quotequote all
Best ?

Cheapest ? Other ?

427 ? New Crate ? http://www.partsworldperformance.com/ls3-376-525-v... ( depending on crank/cam trigger suitability, but just an example )

Or do you want to re-work your own ? Heads, cam, intake, exhaust manifolds and tuning etc etc

BlueDevil

Original Poster:

414 posts

210 months

Thursday 18th August 2016
quotequote all
Was more thinking re working what I had.

Fuelish

67 posts

101 months

Thursday 18th August 2016
quotequote all
Induction, heads and cam and re-map

Ian.


Mud_

2,924 posts

162 months

Friday 19th August 2016
quotequote all
Fuelish said:
Induction, heads and cam and re-map

Ian.
In other words, everything! I think I'm right in saying everyone with 500fwhp (~400whp) on here with an NA LS1/LS2 has all the bolt-ons and a relatively modest cam (i.e. MOT borderline acceptable, duration not much past 220s/low 230s).

stu vxr

277 posts

113 months

Friday 19th August 2016
quotequote all
I have owned my ls2 monaro vxr going on for seven years now and for a long time I was planning more power and wanted the same as you, I did a lot of research did a lot of reading on forums etc, I wanted to stay Na but when you compare the cost with FI there really wasn't anything in it, yes I know a charger is expensive but so is that power if you want to stay NA.
I went for the charger because I wanted guaranteed power but retain the driveability of the car something that in my opinion you won't get with cam etc. My advice finally is decide exactly what you want write it down etc drive a few different cars, I drove many Inc a mapped 400 bhp rs focus then speak with Roger Keys he is the most honest man I have met. Good luck!

Aitch 'H'

192 posts

114 months

Friday 19th August 2016
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I've got 486.2bhp N/A achieved using a lumpy barely MOT legal cam, 5 way CNC ported polished ls2 heads, fast intake & throttle body, high ratio rockers, VCM air intake, 1.75" primary pipes, sports cats and a 2.5" full system with no back box and a full bespoke map done by Paul from Wortec. Monkfish can supply all the parts for around £4000 then you've got fitting. So as previously mentioned it is expensive but I wanted N/A instead of FI and to be honest it hasn't made it too undrivable, I use it as my daily driver. It is a little choppy/lumpy but I like that and it shakes the car on tickover but that's part of the fun of owning/running a V8! Hope this helps

gsd2000

11,515 posts

189 months

Friday 19th August 2016
quotequote all
If you have an ls2 then a good option is to buy a set of used ls3 heads, skim them to bump the compression up, cam speak to ringram but around high 220's, ls3 intake, headers and exhaust should get you high 400's

ArnieVXR

2,449 posts

189 months

Friday 19th August 2016
quotequote all
Sell that wheezy old 6.0-litre lump and buy a stroked motor built with all the best parts. Monkfish put one together years ago that pushes well into the 500s and has never had any problems. Trouble is, where to find one scratchchin

mikeyb1987

2,358 posts

160 months

Friday 19th August 2016
quotequote all
http://www.pistonheads.com/gassing/topic.asp?t=138...

wink

404rwhp (circa 500 at the fly) and over 170mph in a standing mile.

Aitch 'H'

192 posts

114 months

Friday 19th August 2016
quotequote all
ArnieVXR said:
Sell that wheezy old 6.0-litre lump and buy a stroked motor built with all the best parts. Monkfish put one together years ago that pushes well into the 500s and has never had any problems. Trouble is, where to find one scratchchin
That's two references on two threads in the last week about a N/A 'stroked' or N/A 6.8L engine......I take it you've got one that you want to sell?!?!

ArnieVXR

2,449 posts

189 months

Friday 19th August 2016
quotequote all
Sell? Maybe. It's in the way in my garage now, instead of cluttering up Gary's workshop. I really should just get it fitted to a car and use it. Trouble is I also have a supercharger that needs an engine and this one isn't built with FI in mind (notch higher on the compression than a stock LS2).

Also, the trouble with selling us that most people think a properly build NA engine is cheap, which it ain't. Price a FAST intake, throttle body and rails and you'll see what I mean.

Wyld Stallyn

2,056 posts

134 months

Friday 19th August 2016
quotequote all
Mine has - CAI, Monkfish Cam, Lifters, Wortec Headers & Exhaust, Remap = 378 to the road or 500 'Pub Horses' as near as makes no odds...

Car did 164 this year at TR cool

Behold81

2,931 posts

175 months

Friday 19th August 2016
quotequote all
Heads, intake and Cam are going to be the key on N/A as you need it to breath as best as possible.

Heads around 1200
Cam kit around 6-700
Intake another 800

you will likely want headers to help with the whole process at another 6-700 for proflow or 1200 for something more well known.

so as stated 4k is not unreasonable for the parts needed.

But at this cost you might as well look at an LSX or pre tuned LS3 and swap the engine unless you really want to do the build yourself or spread the cost over multiple upgrades. .


Aitch 'H'

192 posts

114 months

Friday 19th August 2016
quotequote all

Also, the trouble with selling us that most people think a properly build NA engine is cheap, which it ain't. Price a FAST intake, throttle body and rails and you'll see what I mean.
[/quote]
I know.....ref: either my earlier post on this thread or check my 'My CV8' thread from a while back, however.........if there's a deal to be done a 6.8 does sound appealing

BlueDevil

Original Poster:

414 posts

210 months

Friday 19th August 2016
quotequote all
Behold81 said:
Heads, intake and Cam are going to be the key on N/A as you need it to breath as best as possible.

Heads around 1200
Cam kit around 6-700
Intake another 800

you will likely want headers to help with the whole process at another 6-700 for proflow or 1200 for something more well known.

so as stated 4k is not unreasonable for the parts needed.

But at this cost you might as well look at an LSX or pre tuned LS3 and swap the engine unless you really want to do the build yourself or spread the cost over multiple upgrades. .
spreading the cost is an option as doing things like heads will benefit forced induction if I changed my mind. Did not really plan on changing the engine but could then sell the LS2 on to cover some of the costs.

Sounds like the LS2 is not that versatile or am I wrong. Forgot to add it is a daily driver.

stu vxr

277 posts

113 months

Friday 19th August 2016
quotequote all
An ls2 with a charger on is very versatile believe me!

mikeyb1987

2,358 posts

160 months

Friday 19th August 2016
quotequote all
BlueDevil said:
spreading the cost is an option as doing things like heads will benefit forced induction if I changed my mind. Did not really plan on changing the engine but could then sell the LS2 on to cover some of the costs.

Sounds like the LS2 is not that versatile or am I wrong. Forgot to add it is a daily driver.
The LS2 is plenty versatile. If your goal is 500bhp, then an LS2 with cam/heads will get you there.

If it was as cheap to fit an LS3, wouldn't everyone be doing it?? wink Plus, I've heard the emissions on the pre-tuned LS3 crate engines are not great, so if you were to go down that route, do your reasearch.

gsd2000

11,515 posts

189 months

Friday 19th August 2016
quotequote all
mikeyb1987 said:
http://www.pistonheads.com/gassing/topic.asp?t=138...

wink

404rwhp (circa 500 at the fly) and over 170mph in a standing mile.
this is a good recipe to copy and has proven to be very fast at thunder road as well

stu vxr

277 posts

113 months

Friday 19th August 2016
quotequote all
I have owned my ls2 monaro vxr going on for seven years now and for a long time I was planning more power and wanted the same as you, I did a lot of research did a lot of reading on forums etc, I wanted to stay Na but when you compare the cost with FI there really wasn't anything in it, yes I know a charger is expensive but so is that power if you want to stay NA.
I went for the charger because I wanted guaranteed power but retain the driveability of the car something that in my opinion you won't get with cam etc. My advice finally is decide exactly what you want write it down etc drive a few different cars, I drove many Inc a mapped 400 bhp rs focus then speak with Roger Keys he is the most honest man I have met. Good luck!