EagleMark, did you have a chance to determine if the BJXP bin that was post manual or auto?

I didn't mean to hi-jack the thread but you are right two vehicles with similar issues base timing on vortec heads topped with TBIs. GM TBI computers expects 0° base timing and the spark tables...

This is the bin (BJXP) that I am using for my conversion with PCM 16197427 $OD. Also will be controlling '95 4L60e trans. Engine data: 5.0, 30 over flat top pistons, 9.5:1 compression, com cam...

Mark I have a BJXP bin that came in an eBay PCM buy and it was labelled by the seller 5.0 4L60e 16197427 if you still need a copy how do I upload it. It does appear to be auto bin though from a 94...

Good doesn't sound like much fun. I have a JTR kit in my 77 camaro with 4L60e and TBI conversion. The kit I have puts the speed sensor in the case and a mechanical speedo cable in the tail shaft. ...

GM cruise needs 4000 ppm and the ecu needs 2000 ppm. The sensors you were looking at give either two or four pulses per revolution. You best option may be to use this...

Jags that run have a method to relocate to tone ring to the case instead of the tail shaft. Here's a link http://www.jagsthatrun.com/Pages/SpeedSensors_Reluctor.html. The 4L60e needs a 40 pulse per...

IIRC 93 Chevy trucks with 700R4 had electronic vss. To retain the cable driven 69 speedo you'll have to install a speed sensor and cable drive. Jags that run has a sensor to do this, or search...

Hopefully these will help clear things up. Attached are the pinouts for a 1992 DRAC and 1994 VSSB. Also attached is a picture of both DRAC (left) and VSSB (right).

You are correct there are two outputs from the VSSB to PCM(s) 6395 or 7427. One is trans output speed at 40 pulses per revolution (PPR) and the other is vehicle speed at 2000 pusles per mile (PPM). ...

For those interested I have both the DRAC and VSSB. These little boxes convert a 40 pulse tone ring into the signal to for the PCM or ECM, and speedo. The VSSB has more outputs than the DRAC. ...