Originally Posted by F-BIRD'88
You`d be better off using a vortec head and taking a few degrees timing out of it.
The vortec head will run efficiently with modest spark advance because of its much better
`fast Burn Chamber` May make max power at 36deg BTDC, but will run very well with 31-32deg.
Then tune the vac advance rate so it is not agressive, no more agressive than nessessary.
You will end up way a head of the game. Use a Dual pattern cam with a wide 114 LSA to avoid peak
midrange cylinder pressure. Your cr will be 10.77:1 with a -7cc flat top and 0 deck height and a .041
It will be more detonation resistant than if you used the old crappy 882 head on it
and way more powerfull and fuel efficient, even with a few deg less timing than absolute optimum.
The new much upgraded powerfull Bow Tie Vortec cylinder head is 66cc which will get you a 10.53:1cr
Thats fine on premimum pump gas and correct tuning on your 383.
Get the Big Port version for max power on your 383.
These are sold assembled and ready to rock for .530`lift and high perf cams.
EG isky 280H Mega or Comp cams XE 284H-10 cam. It will GLH
the bowties are also over one thousand dollars lol