The quick answer is yes, a 3x crank trigger and a 1x cam trigger will allow the I6 to be operated with the '0411.
My idea for a SBC was to use the L31 distributor for both cam (CMP) and crank (CKP) signals. The pictures below are the design I cam up with.
Basic engine math, 1x crank revolution = 2x cam revolutions, meaning for the SBC an 8x trigger wheel inside the distributor = 4x crank trigger. The I6 engine math is 3x crank = 6x cam.
dave w
Iso View.jpg
CIMG2743.jpg
Originally Posted by dave w
That's a very interesting idea. I may have to give that some thought.
It may be easier that the crank reluctor I've been looking to make. And it would be in a self contained unit.
More pictures for more ideas?
The cam signal trigger wheel is 175 degrees, not 180 degrees.
IMG_0322.jpg
IMG_0326.jpg
IMG_0324.jpg
More pictures for more ideas?
The cam signal trigger wheel is 175 degrees, not 180 degrees.
IMG_0322.jpg
IMG_0326.jpg
IMG_0324.jpg
Nice! So did you machine the housing?
Why 175 deg?
I was thinking I can put the cam trigger on the bottom of the mount plate and the crank trigger on the top.
Would you happen to have a print for that???
Last edited by Thorwon; 09-19-2021 at 01:04 AM.
I have access to very accurate measuring tools. I don't know why 175 degrees, but the one I measured was 174.96 degrees.
What Inline 6 are you working with? Is there a factory distributor to leverage a dual trigger design. The SBC L31 was the distributor I leveraged because it has a CMP.
BTW, it's very expensive to make a custom "One Off" dual trigger distributor.
OBD2 is better than OBD1?
OBD2 is more expensive than OBD1?
dave w
I'm working with a 1988 Jeep 4.0 engine. There is a factory distributor that has a single trigger.
That's why I said I might be able to put the other one on the bottom of the mount plate. I'm not sure there's room.
I've been running a HEI big cap distributor for the last year. But something else has died in the system so I'm going to see if it'll run on a 0411.
I'm a retired machinist so I have time to play with it. All it'll cost is the price of the parts. I have a lathe and mill with rotary. They're both small but in good shape.
I already have a harness set up for the 0411. I'm still not sure what throttle body I'm going to use. The intake manifold has a weird 3 bolt pattern.
So I'll probably just machine an adapter for it to a GM throttle body.
My files are for the V8 Crank Trigger Wheel. Pictures below are the V6 Trigger Wheel and the V8 Trigger Wheel.
The spacing for the V6 appears to be 60 degrees evenly spaced, or 60 degrees high / 60 degrees low. The spacing for the V8 appears to be 30 degrees high / 60 degrees low.
V6 GM PART NUMBER 10230149
V6 Crank Trigger Wheel GM Part Number 10230149.jpg
V8 GM PART NUMBER 10190917
V8 Crank Trigger Wheel GM Part Number 10190917.jpg
dave w
Last edited by dave w; 09-19-2021 at 05:50 PM.
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