Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - Pontiac Heads!
Thread: Pontiac Heads!
View Single Post
  #2 (permalink)  
Old 09-20-2006, 01:21 PM
nitro_baller4692's Avatar
nitro_baller4692 nitro_baller4692 is offline
floppers forever
 
Join Date: Jun 2006
Location: illinois
Posts: 791
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
here are some #'s to look at.if you are not going to go over .500'' lift on the cam 5c's are better,but if you are going to port the heads and go over .600'' lift find the 6x.
these #'s are in the right place.
imo

port volume, 5c 151cc int./138cc exh.
6x 158cc int./146cc exh.
valve sixes
5c int.2.110''/exh1,770'' bigger exhaust valves
6x int.2.110''/exh1.660''
flow#'s at .500''
5c int.222cfm/exh.171cfm
6x int.212cfm/exh.148cfm
Reply With Quote