Cam sensor differences (Pic)

[Superdave]

Left to right...


3500, 2002-3400, Clevette replacement (from 60degreev6 store)




the 3500's cam trigger goes half way around as the other 2 just have a notch...

[SappySE107]

Should post that in the gallery under comparisons. I can get any of those cams for regrind cores. That one in particular was for a 99 grand am. They are all compatible with the matching sensor from what I have been told.

[Superdave]

Should post that in the gallery under comparisons. I can get any of those cams for regrind cores. That one in particular was for a 99 grand am. They are all compatible with the matching sensor from what I have been told.

Will-Do

I thought the 3500 one was the most interresting...

[bszopi]

That design actually came out in 03 and has been used on all the 3x00 engines since then.

http://60degreev6.com/showthread.php?t=16566

Unfort, the pics currently don't work. But, I need to work on redoing that entire article anyway.

[IsaacHayes]

I've got a question, I've read that the best way to go with swapping a SFI 3100 for a 3400 SFI say, is to use the cam sensor with whatever year engine.

Example, 94 3100- swapped to 04 3400, you use a 04 cam sensor...

But others keep their old one, which isn't designed for the new cam notch, so whats the deal? Won't it throw a code and throw off fuel injection timing?

[bszopi]

No. We had a huge discussion about this over on GAGT when Milzy first came out with his cam and it only had the 03+ trigger on it. The sensors all pick up a leading (or trailing?) edge of the tirgger and the convert the signal to a square wave for the ECM. If you look at each of the triggers between the years, they all start at the exact same spot. Therefore the sensor is seeing a change in the trigger and it creates its square wave from that.

[RedBird]

so what is the point in changing the design at all, when they could have left it the same and liekly saved money and time, rather than design a new trigger?

Not that this affects me, i can use any ol' 96+ 3x00 cam, since i wont be using the cam sensor, just wondering.....

[sprucegagt]

I think its for better resolution at high RPM. But I have nothing to confirm it. It could also be a supplier problem causing a design change.

[SappySE107]

So you use the sensor that goes with your ECM year, not with the cam?

[bszopi]

I'm running an 03 3400 with the original 03 sensor on a 94 PCM with no issues. Use the sensor for the motor, because each sensor converts the signal internally and sends out the exact same signal to the PCM.

[SappySE107]

http://mymonte.com/discussion/viewtopic.php?t=18164

Hmm, well this guy had an issue with his but he was using an 03 cam with an 00-02 sensor (milzy said to use that one?) but he ended up using one for 96 I think. I thought it was sensor to cam should be the same but then after reading that thread I thought maybe it was sensor to ecm instead.

[3400-95-Modified]

I spliced in a 05 sensor for my friends 99 grand am with a 05 motor and he has had no issues yet. I will also be using a 05 sensor on my new motor when it goes it.

[bszopi]

http://mymonte.com/discussion/viewtopic.php?t=18164

Hmm, well this guy had an issue with his but he was using an 03 cam with an 00-02 sensor (milzy said to use that one?) but he ended up using one for 96 I think. I thought it was sensor to cam should be the same but then after reading that thread I thought maybe it was sensor to ecm instead.

That right there proves Mike's brilliance... Why in the hell would you install an 00-02 cam sensor in an 03 engine running on a 95 PCM?!? I still think the sensor should be mated with the cam (I'm almost positive that is how mine is... maybe I can check my old block to see if the sensor is still in there), because the output of the sensor will always be a generated square wave feeding to the PCM

[3400-95-Modified]

I have a 01 3400 motor with 01 3400 cam and I'm running a 94 buick 3100 sensor(OBDI), on a 96 3100 Beretta ECM(OBDII)....

Cant get more f-ed up than that and I have no cam code.

[rickykline]

i dont see how you would get a code if the marks all are in the same place...