Base Tune or close to spec tune for 0411 SBC406AFR-HSR

**LRT** · 12-19-2016

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**dave w** · 12-19-2016

I'm using the 24x crankshaft trigger wheel, 1x Vortec distributor camshaft setup, with 8 individual LSx coils. dave w

**Hog** · 12-20-2016

Originally Posted by LRT

I have been reading your posts regarding this project (in several threads) trying to come up with a low cost solution.

I just noticed something ... you using a 24x CKP reluctor on the SBC, and using a Vortec distributor for the 1x CMP signal ... are you using 8 LS style coils for spark distribution, or the Vortec distributor (with 8 spark plug wires) ?

I don't know for certain, but I had thought that to use a Vortec distributor to fire the cylinders, you had to use the Vortec 4x CKP system, and if you switched to a 24x CKP system you then had to use the coil-per-cylinder system (8 LS coils) to fire the cylinders.

Maybe someone else knows the answer to this ...

You are correct, in order to use the distributer to actually deliver the spark energy, you must use a 4x CKP reluctor and the distributers 1x signal along with the calibration file from a 2001-2002 van that had the L31 350 engine and 0411 PCM.

To actually run CNP you use the 24 CKP reluctor, Vortec distributer for the 1x CMP signal. For cable throttle, use a Camaro LS1 calibration in the 512kb calibration, for ETC(Electronic Throttle Control) use a Corvette calibration in the 512kb PCM.

peace
Hog

**evilstuie** · 12-23-2016

Yeah sorry, I'm using the 8 LS1 coil pack setup, vortec distributor is just for cam position.

**LRT** · 12-23-2016

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**evilstuie** · 12-25-2016

Thanks so much for that!!!
I'm in Melbourne for another 2 days, but I know most of the details.
No MAF
Return style rail
One knock sensor on left side of motor, TPI 350 style
Trans - no gear selector mounted
Dual fans, but wired for single trigger, 180F thermostat
Injectors from memory are 28lbs LS1 injectors
As soon as I'm back I can get the numbers off the injectors.
Thanks so much for this :)