does anyone know where I can interprete these. my tranny is a "617mab" and the one I have to replace it is a "611chb"

Try here:

http://dtcc.cz28.com/transmission/index.htm

thanks, now to figure this out

Model DifferentialRatio SprocketRatio OverallRatio ConverterCode ConverterDiameter K-factor(stall) IMS

7MAB 3800SC V6 Olds 88, Pontiac Bonneville 3.29 37/33 2.93 JSFM 258mm 133 No
1CHB 3800SC V6 Pontiac Bonneville 3.29 37/33 2.93 JZFM 258mm R115 Yes

It'* the right ratio and TC diameter. Looks like a different stall? From a 2001. For SC. Didn't I read somewhere that the 2k trannies are wired differently?

ya, I would need to get a side cover and wiring harness. the tc'* are different also. the 2k'* don't lock up like the 97-99. they have like 20 rpm slip. Sent an email to the experts (Tim and Todd). We will see what they say.

Sounds like you have a good fresh start. Pun intended.