Was going through my notes from 04 as per my earlier post and came across this info from the site listed below:
http://www.geocities.com/novaessess/sseqip.htmI
1970 Chevy Nova SS
111-inch wheelbase
Super Sport equipment option (RPO Z26) available for Nova Coupe Model 11427.
Exterior Features:black-accented grill with SS badge;simulated air intakes on
hood;black rear panel with SS emblem (or black-ribbed rear panel trim plate if
also equipped with RPO ZJ2 Custom Exterior group);E70x14 white-stripe Wide Oval
tires on seven-inch rims.
Interior Features:black steering wheel and column with SS hub emblem.
Engine Availability
RPO# Type CID Rated HP Torque Comp. Carb.
L48* V-8 350
300@4800 380@3200 10.25 4-bbl
L34 V-8 402**
350@5200 415@3400 10.25 4-bbl
L78 V-8 402**
375@5600 415@3600 11.0 4-bbl
*included with RPO Z26 equipment.
**marketed as Turbo-Jet 396.
Engine codes and insignia
L48 350/300-hp:CNJ, CNK, CRE, CTB(manual), CTC(TH400)
L34 402/350-hp:CTX,CTW,CTZ.
L78 402/375-hp:CKO,CTY,CKQ.
L89-375/396:CKP,CKT,CKU.
Insignia:numerals above front fender marker lamps.
UPDATED INFO !!
CTB- 350/300-hp manual
CTC - 350/300-hp TH400
This goes along with what Pete indicated in an earlier post. I have not been able to locate where I thought I saw some production numbers for the L89 but I had written down 3-6 with a question mark next to it. I'm still looking. I don't know a lot about Novas and I was helping a friend research a possible purchase however I was under the impression that basically GM offered the same engine types for both the Nova and the Camaro.
I'll keep looking and if I find something more conclusive I'll post. This thing is starting to bug me now.