what would make more power?

[v8commy]

im thinking about getting some efi heads and a lumpy as **** cam would i make more power with the efi setup or with a efi carby manifold setup also would i need new extractors?

[shiftySLE]

Go the carby, remember a cam is only good for shifting the power curve, it doesn't make power, you'll need a stall (auto isn't it?) to get the revs up to wherever you shift the power curve to or it will be sluggish as down low, also if you are going that far, you might want to consider bottom end work, standard engines cant rev that high without melting pistons, head work, speak to a performance shop and see what they offer in the way of packages.

[shiftySLE]

And say goodbye to fuel consumption and hello to fun, you just cant have both.

[v8commy]

yeh but i was gonna do this for now as i dont have 8k for a 383 stroker rebuild after that im chucking a vortec on the side

[v8commy]

although i could put a 350 chev with 400 double lump fulie heads and a megatorque cam dunno the specs 40 thou over pistons holley contender manifold and 650 double pumper carby but i wanna keep the og motor sorry bout beein gangsta

[DANNY8]

I'm thinkin of having a go at building up a budget donk. Might go a carby 5.0L, stock bottom end, VN heads, nice cam and spring package, cheap ass procomp manifold and a big holley.

A mate chucked a VN 5.0L in his dirt circuit car, ran the injection setup, then changed to a carby and rekons it went ALOT better.

[v8commy]

yeh thats what i thought you can get those manifolds off egay for 700 i think

[shiftySLE]

if you put a lumpy as cam in it, all you'll have is a cae=r with no power till it hit 3500 and you'll still redline at 4500, wouldn't be much fun to drive, look into headwork and raising compression with a cam and stall it up to match the cam

[v8commy]

yeh thing is that my trans probly wont last that long with a stally in it

[shiftySLE]

get it done up, while its out for a stall, its only a few hundred dollars more for extra clutches and a steel piston. It would be disappointing to have a cam and half the rev range is little or no power, In all honesty, I would wait a bit longer or you will kill the engine as well.

[v8commy]

yeh im gonna wait till im 18-19 when ill be 2nd 3rd year apprentice the take out a 10-15k loan and go nuts with the vk

[NZVK308]

Another alternative is look into a multi key way timing sprocket and advance cam timing a few degrees... exhaust/carb and cleaning the heads in way of bowl grind in the heads.... im currently looking at my exhaust as i purchaced mine with open headers no exhaust

[greenfoam]

VN heads and a good manifold, god cam and a carby will be your cheapest option to power. The efi setup will make MUCH more power down low than the carby but the manifold is so strongly setup for low end torque that it almost defies the point of putting a cam in one so you really need to use a more top end kind of manifold

[v8commy]

thats what i was thinkin cheers for that greenfoam

[Havok85]

EFI is a much better system. It was deisnged by walkenshore when he was hired out to australia by holden to help them win the V8 supercars.

that was when they made the restrictions the engines have to be under 5000cc.
which the 308 was just over so he de-stroked it which is where the 304 came from and added the efi to get the torque back.

[ari666]

throw all power differences and torque curves aside and go with the simple fact that CARBIES SOUND BADASS and efi just sounds a bit gay.

[v8commy]

true efi sound truly homo

[Havok85]

yea however he is asking what would make more power not what sounds better haha.

[v8commy]

yeh i my lecturer from tafe owns al's chevy gargare he said more power could be made from barby setup

[greenfoam]

I reckon the carby Holden V8's sound like boats lol to me the injected 304 sounds 50 times better, crisper/better but each to their own

[v8commy]

yeh true each to there own but injection dosent compare

[ari666]

I reckon the carby Holden V8's sound like boats lol to me the injected 304 sounds 50 times better, crisper/better but each to their own

only cos' you know how to play with em'

to general schmo's like myself carbys sound mean, lean and difinitly NOT green

[v8commy]

hahaha lol oh how i love carby's