317's vs 853's
#6
The 853's had stock valves in them. I have one witha pin hole instead of trying to have it fixed I picked up 2 sets of 317's and am going to have them milled, bowl blended and what not. I am hoping to pick up some more power with them but not sure if I would.
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#12
In-Zane Moderator
iTrader: (25)
Depends on who flows them, this is where i get my info(some):
http://users.erols.com/srweiss/tablehdc.htm#Chevy
853@.600: 227/180
5.3 castings: 223/187
806: 231/173
LS6 on SF600 flow bench: 257/183
Than another advan ind flowbench: 260/183
Then another rating the 243 and 317 casting:236/185 (rather low)
317: 253/184
L92: 322/214
So many variables, but there is tons of data in there, several shops port jobs, stock and aftermarket, great site.
http://users.erols.com/srweiss/tablehdc.htm#Chevy
853@.600: 227/180
5.3 castings: 223/187
806: 231/173
LS6 on SF600 flow bench: 257/183
Than another advan ind flowbench: 260/183
Then another rating the 243 and 317 casting:236/185 (rather low)
317: 253/184
L92: 322/214
So many variables, but there is tons of data in there, several shops port jobs, stock and aftermarket, great site.
#16
In-Zane Moderator
iTrader: (25)
One guy i know that owns a shop says he has got 300 cfm from a 243 casting with very little work before, but the 317 and 243/799 are supposed to be identical, they are a very popular head for this reason and are cheap, just the bigger chambers people bitch about, but if you have 400+ cubes, they really work.