Here's the 327 engine/transmission choices for the 66/67 Chevy II / Nova
1966 327 8-cylinder
ZA - 327cid 4V (275hp) w/manual
ZB - 327cid 4V (275hp) w/manual and A.I.R.
ZC - 327cid 4V (275hp) w/manual, A.I.R. and A/C
ZD - 327cid 4V (275hp) w/Powerglide and A.I.R.
ZE - 327cid 4V (275hp) w/manual and A/C
ZF - 327cid 4V (275hp) w/Powerglide and A/C
ZG - 327cid 4V (350hp) w/manual and A.I.R. (L79)
ZH - 327cid 4V (350hp) w/manual, A.I.R. and A/C (L79)
ZI - 327cid 4V (350hp) w/manual (L79)
ZJ - 327cid 4V (350hp) w/manual and A/C (L79)
ZK - 327cid 4V (275hp) w/Powerglide
ZM - 327cid 4V (275hp) w/Powerglide and A/C
1967 327 8-cylinder
ZA - 327cid (275hp) 4V w/manual
ZB - 327cid (275hp) 4V w/manual and A.I.R.
ZD - 327cid (275hp) 4V w/Powerglide and A.I.R.
ZE - 327cid (275hp) 4V w/manual and A/C
ZG - 327cid (325hp) 4V w/manual and A.I.R. (L79)
ZH - 327cid (325hp) 4V w/manual, A.I.R. and A/C (L79)
ZI - 327cid (325hp) 4V w/manual (L79)
ZJ - 327cid (325hp) 4V w/manual and A/C (L79)
ZK - 327cid (275hp) 4V w/Powerglide
ZM - 327cid (275hp) 4V w/Powerglide and A/C
Look at this page for the
Weights
You and your bro should have talked to Terrys uncle, Paul Pennington Friday or Saturday at Stanton. He probably has a line on just the 66 or 67 Nova you're looking for.
