What are YOUR experiences with the +6, -6 Timing on a Auto??

[HayesPerformance]

Hey everyone,

I wanted to go to the +6 intake and -6 exhaust on my 3.4 DOHC Auto and I wanted FIRST to see what results were noticed by others who did it already BEFORE I do it.

Idle?

Power increase?

Power curve?

mileage?

And so on......


Thanks a million!!!

Regards,
Dave

[donk_316]

Dave,
I think youll find that most folks will say "yeah its better" with nothing to back it up.

You have 96 heads so the ease of adjusting your cam timing at your whim is there.

I say dyno it stock, and then adjust, then redyno it. I dont think youll be happy with just hearing "yeah its better".

[ryan.hess]

yeah, it's better... I think.

j/k... Good luck, hope you get it dyno'd.

[93GTP]

Hasn't anyone on here dynoed the results of different timing settings? If not, there must be someone who can and is willing? I'd volunteer to do it once I get a set of 94-95 cam cogs but there isn't a dyno within 1000 kms of me But it would be great for the whole community if we could get this accomplished. I'd personally be willing to donate some cash to a fund that could cover some hours at a dyno (if we had someone who is a whiz with timing these engines and wants to spend an afternoon at a dyno shop).

[HayesPerformance]

What is it like......

So the 96' Cams are easy to adjust Adrian?
By the way how is it in Thiland now? Have a beer for me!


I have never adjusted any before.
Are the cams on the 1991 hard to adjust??

I was going to use my 1991 cams cause I heard there better for performance. Unless I get the 96' cams reground to the 1991 profile to take advantage of the "easy" adjusting on the sprockets and have a good profile.


YES 93GTP,
It would be nice to have BLACK AND WHITE specs!

Dave

[OldSkoolGP]

I've done it on my manual cars. I just did it for a friend with a 3.4 Auto, but he hasn't really driven it yet to tell me how he likes it. When he does, I can pass it along. I like it, my dyno showed a nice, flat torque curve with 5/5 timing, and this year I'm running 6/6. I doubt much will have changed. Still feels great.

[HayesPerformance]

So....



So it does improve all the low end torque and hp?

does our stock torque curve goe up on a long curve upward peaking just in the high RPMS. Right?

so, this one would give you more power over a greater range?

Dave

[OldSkoolGP]

The power definitely doesn't surge like it used to, where it would just kick in at 3500 RPM. Now it has good constant power, essential for road course racing or autocross. The top end isn't any better or worse, except now the dropoff is more gradual and it doesn't fall on it's face at 6000 RPM, now it pulls nice up to 6600-6700 RPM.

[your_I.D.]

I ran 6&6 with my stock cams and auto trans. I was happy with it. I'm going with 5&5 if I go back to stock intake cams with auto trans.

[HayesPerformance]

So is my 1991 Cams the most aggessive profile with the +6, -6 OR is my 1996 Cams and carriers (on a 1991 block)

Dave

[HayesPerformance]

1996 Cams WITH +6, -6 IS WHAT I WAS MEANING OF COURSE.

[donk_316]

Dave,
I think it was shown that there is very little difference between the early and late cam profiles. Not enough of a difference to make it worth while to swap them out.

Stick with the 96 you have and just get it rebuilt or whatever your planning on doing.

I still have the new 96 Cam timing kit with the pulleys and belt, new 96 oil pump and oil pan gasket if you would be interested.

[RednBlack]

I'd advise against it. But then, I'm just trying to beat you.

[HayesPerformance]

t

Thanks, Adrian

Dave

[Husky]

I'd use 1996 cam carriers if you have them, the oiling system was better I think.