How many kw??????????

[murphy77]

hey guys i have a black manual thunder vz 6L ute and a few mods listed below aswell as a valve springs upgrade and a mafless tune obviously.. these are the figures.

camshaft- 232-234
exhaust - twin 2.5
manifolds - extractors
induction - OTR
gear 4

power 284rwkw@166kph

torque 758N.M @ 128kph

motive force 1571Lb@ 128kph

I have roughly about 2K to spend on some new mods and im interested in what would be best? im thinking a head package if so how many kw will that give me roughly cheers.

[soop]

Might want to consider the intake manifold before heads or do both at once. Not much point having sexy heads if the manifolds stops them being used.

[murphy77]

ok so will that increase the power much and roughly how much? thanks

[soop]

It will improve the performance but I couldn't quote you a HP figure. It won't not work if that's what you're worried about. Just do some research into the heads first. Don't get something with a too many CC in the combustion chamber, you'll loose compression.

[wikky]

The stock manifolds on the 6Ls are very good. I wouldn't waste an money on an aftermarket one with your mods. A mate tried a couple of different manifold options on his ute with similar mods and gained nothing (went backwards with a couple). Another mate is making 350rwkw and 750Nm N/A, has tried nearly all aftermarket manifolds with no success, has gone back to the stock one for best results.

[azazeldeath]

Giving you estimated power gains is pretty hard, the weather can even affect how much power you get from your engine.
I would recommend a turbo if you can find one cheap enough. Failing that OTRCAI and have your gear ratios changed for more power, but that's just my 2 cents. Chances are someone will come up with something alot better.

[Vt_vic]

heads should put you very close or over the 300rwkw mark a mate of mine had a l76 auto with a 224/228 cam with heads and it made 307rwkw

[soop]

riiight... NA 5.7 vs 3.8ltr FI...

Can't compare them.

[richardpalinkas]

riiight... NA 5.7 vs 3.8ltr FI...

Can't compare them.

l76, not l67 lol

[soop]

LOL, my bad!!

[murphy77]

So what mods do u recommend? I havehad the gear ratio changed to 3:9:1 whatever that means? Cheers

[murphy77]

I have the gear ratio changed to 3:9:1.. And not that keen on putting a turbo in it, would rather a supercharger.. Cheers

[azazeldeath]

A supercharger would be fine as well, its more the matter of money for those 2 options.
The gear ratio I will need to get back to you on as I cannot find my old mechanic books to find if that's a good ratio or not.

[Vt_vic]

riiight... NA 5.7 vs 3.8ltr FI...

Can't compare them.

wtf lol but isnt the thunder manual a l98 engine?

[murphy77]

Powertorque recommended it so I'm assuming it's a good ratio.. so overall there's not alot I can get done for about 1k-2k that is going to increase power and torque greatly? Cheers

[Dz811]

Powertorque recommended it so I'm assuming it's a good ratio.. so overall there's not alot I can get done for about 1k-2k that is going to increase power and torque greatly? Cheers

Chev badges are cheap and add like 50hp..... Also put stockies on the back... theyre like 10 hp each too !!! AND PUT A CANNON ON IT!!!!!

[DLFHUB666]

Chev badges are cheap and add like 50hp..... Also put stockies on the back... theyre like 10 hp each too !!! AND PUT A CANNON ON IT!!!!!

^^^Yep thats a FAIL at being funny.

[wikky]

^^^Yep thats a FAIL at being funny.

Agree. The thread was on track and free of hectikness.

[Fun_Bucket]

With regards to those forced induction reccomendations, wouldn't he need to change his cam and tune all over again to suit FI ? I may be wrong i'm just asking i don't know all that much about modifying engines.

[wikky]

The cam he has isn't a 'blower cam' but it would still work (just not to full potential) and yes a full tune would be required. If you wanted to do things properly you'd change the cam though.

[Fun_Bucket]

Ok i wasn't too sure. So in a situation like this would he be better of keeping the current cam and continuing down the N/A path? Is the cam he has fitted now designed specifically for N/A use / performance? Does his current tune support further modifications without having to be re-tuned?



I'm not trying to change the subject or anything i'm interested to know, and i'm sure it won't hurt if somehow it helps to answer one of the OP' questions..

[wikky]

End of the day it comes down to dollars. The OP said he only has $2k to spend so that limits what he can do. For that money forced induction is out of the question. He hasn't given is the full specs of the cam he has (lift/LSA). If heads are the path he chooses, I'd strongly recommend ringing Nathan Higgins to discuss head options, after all you want the heads to match the cam. The cam he has is a NA cam.

With tuning, to do things properly, you always tweak the tune if you change mods. Yes you can change things and it'll still drive (quite possibly very well too), but to get the most out of new mods it should be tuned to suit.

[VT-565]

Whats the LSA on the cam

[murphy77]

hey im not sure what the lsa is etc.. all im going off is the dyno sheet. i know shit all about engines so im pretty useless when it comes to specs and stuff.. cheers