Unplugging The Vct - Result?

[Ralph Wiggum]

Actually goes the other way mate starts retarded down low and advances up high. The cam timing is worth the effort. A bit of tweaking can improve spool rpm and also boost torque in the midrange.

What haltec do you have? are you sure it cant support VCT? Dont just look for VCT look for Aux outputs that can support PWM.

Personally I would just run a ford PCM as this has all the flexibility you'l need

(screeb shot from a BF F6 tune)

Edit:MR 4.0 is correct, its advancded down low and retarded up high!

[4LEDboy]

Its an E8, it has PWM outputs that are available for the VCT, I was going to leave them out but if it will make a noticable difference then we can give it a shot

Heres a screenshot of the VCT settings.

Edited 21/06/11 12:45 PM by 4LEDboy

[Ralph Wiggum]

Looks like you have everything you need there mate! I can't log cam solenoid Duty Cycle. If SCT can you could get some good info from somebody running an

X-Cal 2. Otherwise just play with it.

If you want any other info from HPT's cams tables pm me an email address

[Mr_4.0]

Retarding down low and advancing up high makes no sense!

If anyone has ever played with cam timing in a car they would understand that advancing gives better low end performance and retarding moves the power band up.

[Ralph Wiggum]

Best ring Ford and let them know that mate as that's a factory BF table. I can tell you from my own experience that more retard down low = more boost sooner

MR 4.0 is on the money! -ve #'s are advance not retard.......

[Mr_4.0]

Must be very different for a turbo car.

[Ralph Wiggum]

Base cam timing table from an NA 5.4 ltr V8

[TURBO4LT]

  On 21/06/2011 at 9:41 PM, Luke. said:

Best ring Ford and let them know that mate as that's a factory BF table. I can tell you from my own experience that more retard down low = more boost sooner

I have to agree with Luke on this one

[Mr_4.0]

are those figures degrees? or angle? or what?

Speaking from my own experience with NA 6 cyl falcons, retarding the cam pushes the power band higher in rev range, and advancing bring the power band down.

Surely those figures are not the amount of degrees the cam varies? 10 degrees is enough in some cars to bring on bad P/V clearance issues.

[Mr_4.0]

im not trying to start an argument either, im here to learn like everyone else.