Does anyone know what is the maximum flow figure in cfm is attainable from these heads in ported form with a 2.2 and 1.75 valve or similar. In australia its all 351 clevelands but a few of us are going bigblock in our cars and no one here can tell me this information with out taking my money first, thanks in advance to anyone who has any input.

 

i know there have been several postings of this nature but after 2 weeks of regular searches through the forums and archives i still have no real info.

 

go here
http://www.network54.com/Hide/Forum/85220

 

Her eis a set of flow numbers from http://www.reincarnation-automotive.com It is a site all about porting on the BBF, it has step by pictures, verbal descriptions and explanations of exactly what to do, why to do it, and what not to do. He is getting some of the best numbers in the country out of the factory iron.

D3VE
Lift Int EX
.2 159 117
.3 218 148
.4 266 185
.5 291 193
.6 314 205
.7 323 207

This is 207 cfm on a smog casting that until very recently everyone thought was pure trash. Scott has learned and modified his technique to the point that one of the guys that uses his heads is getting right near 600 hp with a smallish 232 @ .050" lift and .565" lift cam from his 466 in a jet boat with cast iron D3 heads!

 

thanks alot guys you have been very helpful