D9HP

All,

I know that the crankshaft reluctor wheels require different sensors but I haven't been able to find any definitive answer on whether or not you can put a new 56T wheel/crankshaft in an older / originally 24T wheel block.

If I run a 5.3L L33 block do I have to run the older wheel or are they the same other than the sensor required?

S10xGN

iTrader: (11)

Any wheel in any block, just depends on the appropriate sensors and electronics. BTW, it's 58t, not 56t. Well, technically it's 60-2...

D9HP

Awesome, thanks.

So you might have the answer to this one as well:

If I sleeve a 5.3L block can I build it up as if it were a LS7 other than needing the valley cover with the knock sensors in it? Or are there other differences?

Paul Bell

iTrader: (9)

There are 24x PCM systems (GenIII) and 58x PCM systems (GenIV).

What you need is determined by the PCM installed in the vehicle, not the sensors.

D9HP

I am planning on running either a Gen IV harness and ECM or Holley HP EFI system.

Throttle body will be cable drive.

Thanks,
Dustin

pantera_efi

iTrader: (1)

FIRST, the 60-2 TW NAMED in the 1980's was used by GM AFTER patent expiration in 2006, renamed 58x by GM though there is actually 59 teeth as seen by ALL ECUs.
NEXT, the 24 tooth 24xe (e=EVEN) TW (LS-1, early LS-2) requires TWO sensors.
The CS is a Black Hall sensor, the CAS (1/2 moon target) Black Hall with identical wire position to CS when at the rear of the block.
The CAS Black Hall sensor mounted at the front cover (GT-150 connector with key) has the two outside wires reversed with respect to the CS wiring.
This is ALSO a 1/2 moon TW.

NOW, the late LS-2 and newer LS-x, LS-DI TW is a 60-2 (58x) with the GRAY CS ONLY, the LS-1 BLACK Hall sensor will not work. (same pinout)
The CAS is a four post target that my pose a problem for non-GM EMS.

My ECU-882, the Holley AND most other modern EMS would work best with only the 1/2 moon CAS either at the rear or front of the engine.

I have even used both front/rear Hall CASs for "closed loop camshaft VVT position control" with my ECU-882.

Lance

Paul Bell

iTrader: (9)

Very good information but I'm not sure if it's very relevant here.

D9HP, I'm not sure if the GenIV PCM will support a cable actuated throttle body. The Holly Dominator should. For this you'd need the 58x reluctor on your crank, the 58x crank sensor and the 4x cam gear & sensor on the timing cover.

D9HP

Perfect - I didn't know if the stock PCM allowed that or not.

Guess I am going with the Holley system as a result. Definitely don't want a drive by wire setup for this car.

Got it. I can manage all of that!

Paul Bell

iTrader: (9)

The L33 engine is similar to the LM7, which came out in 1999 as a GenIII 24x engine. It came with a drive by wire throttle body. The crankshaft position sensor will be black (GenIV/58x engines are gray).

As you don't need the complexity of the drive by wire TB, you can use a cable driven unit and a Camaro/Firebird PCM to keep costs down. The Holley EFI is a better unit and is very flexible. And Holley offers plug in harnesses for any setup you want.