Is this a good cam for ecotec? n/a

[hillboy89]

I brought this cam a while back and was thinking of changing before rebuilding.. I have ported n polished heads, Heavy valve springs, extractors n exhaust system..

C.O.M.E. CAMS
STREETMASTER “HYDRAULIC ROLLER” CAMSHAFT
GRIND #: CSBR-416
CAM LOBE LIFT
Intake: .308”
Exhaust: .308”
TYPE: Hydraulic roller
ADVERTISED DURATION
Intake: 290
Exhaust: 297
VALVE LIFT
1.5:1 Rocker Ratio Int: .462” Exh: .462”
1.6:1 Rocker Ratio Int: .493” Exh: .493”
1.7:1 Rocker Ratio Int: .524” Exh: .524”
DURATION @ .050”
Intake: 216
Exhaust: 220
LOBE CENTRELINE
Intake: 108
Exhaust: 116
VALVE LASH (HOT)
Intake: hydraulic
Exhaust: hydraulic
CAM TIMING @ .050”
Int Open: .6
Int Close: 34.9
Exh Open: 46.5
Exh Close: 6.4
LOBE CENTRE SEPARATION: 112
VALVE SPRING PRESSURES
Seat: 115 lbs.
Open: 310 lbs.
INTAKE LOBE LIFT FOR #1 CYLINDER INTAKE LOBE
(use this specification for the most accurate camshaft degreeing)
.051” @ TDC

Or would the ones ebay are selling here: COMP CAMS TO SUIT HOLDEN V6 ECOTEC - eBay Engine Modifications, Performance Parts, Car, Truck Parts, Cars, Bikes, Boats. (end time 06-Oct-10 20:37:57 AEDST) Be better?

[sircruisealotVS]

The 416 is a decent street cam from c.o.m.e - not too big to be annoying to drive around daily. Would be suited to a 2800rpm stall if you have an auto.
The cams in the link aren't that impressive - the first two are smaller than the c.o.m.e item and wouldn't see as much increase. The last seems a bit overboard unless you always want to be driving around
over 4000rpm...

[GTP 85]

should be a nice little cam for the street. But, as said, a stally would prob help it out a bit

[hillboy89]

iv currently got it in my car and its got a manual behind it but it seems sluggish.. and saying that, like probably slower than stock. would the timing be a bit out or something>?

Although it has made it bloody awsome on fuel.. got like 620k's today with still tad over quarter of a tank. Maybe its just something else killing it with all air no fuel?

[Andrew426]

iv currently got it in my car and its got a manual behind it but it seems sluggish.. and saying that, like probably slower than stock. would the timing be a bit out or something>?

Although it has made it bloody awsome on fuel.. got like 620k's today with still tad over quarter of a tank. Maybe its just something else killing it with all air no fuel?

You have remapped your fuel and spark to suit, right?

[GTP 85]

iv currently got it in my car and its got a manual behind it but it seems sluggish.. and saying that, like probably slower than stock. would the timing be a bit out or something>?

Although it has made it bloody awsome on fuel.. got like 620k's today with still tad over quarter of a tank. Maybe its just something else killing it with all air no fuel?

To answer in a general sense...

Most cam upgrades will lift the powerband up higher, cause most people will blindly go for the biggest one that will fit haha. Hence the result is a car that is a pain down low (sluggish), and needs to be revved to go anywhere. I'm guilty for this, but when i had my cam engineered i did keep in mind that i was going to throw some more compression at the engine later down the track.

hillboy89- Is your car tuned? Cause if not it will definitely need it! I'll admit my v6 got much better on fuel too after the big cam went in, but i'll attribute that to the hours of dyno tuning that went into it. If you feel the performance is lacking, i'd put my money on the engine needing some breathing improvements OR more compression.

The cam in mine doen't come thru till about 3000rpm, but when it does.... Damn you cam tell! haha

[sircruisealotVS]

If you honestly think your car is slower than stock with that cam installed something is wrong.
That 416 cam should pull very nicely from around 2600-2800rpm all the way to the limiter and have solid torque throughout. What sort of compression are your ported heads running?
Also what exhaust are you running too? The perfect cammed V6 exhaust size is twin 2 1/4" for the best spead of torque thought the revs.
Even on a stock tune if you have good compression and a decent exhaust you should be noticing a drastic difference to stock with that cam.

[hillboy89]

Sorry for the late reply. Yeah i havent had the computer re done or anything and the heads were meant to be brought from a package from come. Saying that it DID come with a suited chip but it doesnt even start the car (No fuel i assume?). And as for it picking up at about 2600rpm indeed it does, i can hold my throttle in the same spot and as it hits that range its like i pushed the throttle twice as far, only problem is it dies again at about 5000rpm if that. You think a tune would fix that too or do i have other problems? Thanks for all the advice.

EDIT: Exhaust is 2.5inch sports with extractors of course. And the engine was a rebuild so shoulda had good compression.

[acarmody]

Sorry for the late reply. Yeah i havent had the computer re done or anything and the heads were meant to be brought from a package from come. Saying that it DID come with a suited chip but it doesnt even start the car (No fuel i assume?). And as for it picking up at about 2600rpm indeed it does, i can hold my throttle in the same spot and as it hits that range its like i pushed the throttle twice as far, only problem is it dies again at about 5000rpm if that. You think a tune would fix that too or do i have other problems? Thanks for all the advice.

EDIT: Exhaust is 2.5inch sports with extractors of course. And the engine was a rebuild so shoulda had good compression.

And there is your problem right there. You must retune your car when you get a cam put in.

[GTP 85]

Tune it for sure! It will be a different beast then!