[BB_Mike]

I have to make a choice between using a Crank trigger in conjuction with a "cam sync" signal from the distributor versus using a "dual sync" distributor for my Electronic Fuel Injection project.

Can you have a front mount crank trigger and still run street car accessories like PS, A/C, ALT ? Shims maybe? pictures perhaps?

What trigger kits do you have, and are there any to stay away from?

I see you can even get a crank trigger signal from a distributor. Are we splitting hairs here for timing chain stretch for less than 6500RPM ?

 

[BBC71Nova]

I went back and forth with the crank trigger decision too. If I were just racing then I'd probably go that route. For a street car though with all the accessories it seemed like the crank trigger might complicate the pulley alignment enough to not make it worthwhile.

That was for a carb deal though. I'm not sure about the EFI and syncing, and whether or not that would be worth the tradeoff. You gonna go FAST, BS3, ? Might be worth a quick call to them.

John

 

[BillsCamino]

Mike,
I ran a MSD crank trigger along with power steering, mechanical water pump, clutch fan, and an alternator on the 540.
No problem...just removed the thickness of the trigger wheel (5/16" IIRC) from the center of the crank pulley (March serp setup) and welded the two pulley halves back together. Simple and everything will stay in alignment.
Many street miles on that setup...no issues!

 

[Calculated Risk]

on my big block i have a msd crank trigger, which locates itself to the ATI balancer by using the step located on the face of the balancer, then i have a Jones Racing Products mandrel which turns an alternator, a belt driven fuel pump, a vacuum pump and an external wet sump oil pump. The mandel locates itself via the center hole of the crank trigger wheel and the three bolts hold it to the balancer. It does take some engineering to make it all fit, but will work.

 

[69 Malibu]

on my big block i have a msd crank trigger, which locates itself to the ATI balancer by using the step located on the face of the balancer, then i have a Jones Racing Products mandrel which turns an alternator, a belt driven fuel pump, a vacuum pump and an external wet sump oil pump. The mandel locates itself via the center hole of the crank trigger wheel and the three bolts hold it to the balancer. It does take some engineering to make it all fit, but will work.

What's the big block in?

 

[Calculated Risk]

going from an 05' Racetech rear engine dragster into my 80 Monte Carlo.

 

[godsend]

I have to make a choice between using a Crank trigger in conjuction with a "cam sync" signal from the distributor versus using a "dual sync" distributor for my Electronic Fuel Injection project.

Can you have a front mount crank trigger and still run street car accessories like PS, A/C, ALT ? Shims maybe? pictures perhaps?

What trigger kits do you have, and are there any to stay away from?

I see you can even get a crank trigger signal from a distributor. Are we splitting hairs here for timing chain stretch for less than 6500RPM ?

I i were u Ill go for wasted spark ls1 coils and a aem cam plug with cam/crank sync.

Probably around the same money as a coil, distrubutor, crank trigger setup...

I use 8 msd coils, and a DIS4. But for your setup i think LS1 coils are easier.

 

[BB_Mike]

8 coils on a 540. As if my engine bay won't be full enough with the turbo piping. Can I see some pictures of that Godsend? I can Pm you an email address if that'll work.

Thanks all for the input. It'll give me some more leads for looking into. But it dounds like I should figure this ALL out before I build the longblock.

I am leaning towards FAST. They sell a cam syn + crank trigger distributor for a talldeck motor. I"m sure they'd be happy to recomend that. but I will give them a call as they're phone support/advice has been great so far.

 

[Doug F.]

Mike,
Not trying to be a pre-sales man, but you should wait if you can to see what I'm working on for Holley (EFI controller). Will work real well with your whole drivetrain you plan....

I've been running one all year on my Nitrous BBC. I am running a 60-2 crank trigger wheel (only 1/8" thick so it isn't bad to mount) and DIS system. It works very well. The timing is as stable as you can get and the power of the coils allows me to run cold plugs on pump gas and have them stay perfect.

It will debut at SEMA and is planned to be available very early 2010.

 

[BB_Mike]

Doug. I'll keep it in mind, but the sooner you can get it advertised the better. I do plan to use a holley intake, for what that's worth.

Now, if that EFI box can drive an LCD to the tune of RPM, MPH and some diagnostics (i.e. like a racepak dash) I'd be all over it!! Just add one FPGA to the board and you're there. In fact, hire me and I'll do that add on for you.

 

[TD509EFI]

BB_Mike,

I used BillsCamino suggestion a while back when I was trying to figure out the best way to mount the crank trigger setup. I had my machinist cut the crank pulley, put steps on both halves with an interference fit, then had the two welded back together. Perfectly concentric, no worries about a wobbling pulley. This is on a tall deck block with Holley MPFI. I'm running a Vintage Air Front runner setup, which doesn't have problems with deck height since all fasteners are located on the block.

John

 

[Doug F.]

Doug. I'll keep it in mind, but the sooner you can get it advertised the better. I do plan to use a holley intake, for what that's worth.

Now, if that EFI box can drive an LCD to the tune of RPM, MPH and some diagnostics (i.e. like a racepak dash) I'd be all over it!! Just add one FPGA to the board and you're there. In fact, hire me and I'll do that add on for you.

Umm, it might just do that Mike...

 

[BB_Mike]

John, I sent you a PM. You might just have done what it is I want to do!

Doug. Consider your input "dually noted".

 

[fast582]

bbmike,i use msd crank trigger and my msd dist is used for my cam sycn i pulled dist apart took the reluctor wheel and cut all but one off then dist pick up becomes cam sync. i'm using bs3 they tell u how to do it on there site. if u are running a turbo i wouldnt even think about using anything but bs3 the tuning capabilities is the best easy to use also had a company in texas make me a custom crank pulley to work with crank trigger and vacum pump. sam

 

[Pro X]

I had ATI install mags in my balancer. Uses an MSD pick up and very little fab work to set air gap. I am doing a Gen VI set up w/L29 crank reluctor using factory crank sensor in timing cover but unless your working on a Gen V or VI magnet embedded in balancer is the cleanest setup. How are getting cam sig?

 

[godsend]

I have been running 4 years with timing errors.

Tried everything.

60-2 with Electromotive sensor and MSD cam sensor plug
4 tooth hall sensor with Mag cam sensor
8 tooth hall sensor with hall cam sensor
12 tooth with jesel driven cam sensor. Hall and Mag

I have a box here with 12 different trigger patterns. Different height on toots. differnet thickness, different lenghts...

tried Bosch, MSD, Honeywell sensors. No luck.

Bought the dualsync cam plug from AEM with optical sensors and hall outputs... No more issues.

So if i had that knowledge before... My car had performed , and not been running 7.5 runs.

Nowdags everybody runs 2000+ street engines in the 6:es. But in 2004 when i started low 7 runs on ET streets and pumpgas were fast.

Autronic Efis seems to be the ****. But its the tuner that makes the tune.. Not the box.

 

[BB_Mike]

Godsend, can you post a link or p/n to this "dualsync cam plug from AEM", please?

Is it their Engine Position Module?
http://www.aempower.com/ViewCategory.aspx?CategoryID=122

 

[Doug F.]

I'm using a GM BBC cam sync deal I think came stock on GenVI engines. Replaces the distributor (oil pump drive, etc). Real low profile, just has a hall effect cam sync sensor in it. I think it is obsolete now? But my buddy bought one off a guy reproducing them. Have to check with him. Nice not having plug wires and a big cap back there.

 

[godsend]

Godsend, can you post a link or p/n to this "dualsync cam plug from AEM", please?

Is it their Engine Position Module?
http://www.aempower.com/ViewCategory.aspx?CategoryID=122

yes. its correct.

 

[67 velle]

I had ATI install mags in my balancer. Uses an MSD pick up and very little fab work to set air gap. I am doing a Gen VI set up w/L29 crank reluctor using factory crank sensor in timing cover but unless your working on a Gen V or VI magnet embedded in balancer is the cleanest setup. How are getting cam sig?

I have efi using a FAST XFI ecu,MSD dist and crank trigger wheel. the dist. is my cam sensor.
I want to get rid of the trigger wheel and use the stock sensor.
Do you or someone have any information to share on using the stock sensor on a gen 6 bbc ?
I can't find any sensor signal converters for a gen 6 aplication.
Thanks,Rich