Port and polishing???

[1988Rangerxlt]

so i have a 91 chevy s10 with a 4.3 and im replacing the old intake i wanna port and polish the one im putting on, does anyone know of any good sites or have any info on this anything would be appreciated

 

[99RangerBoss]

http://www.therangerstation.com/tech_library/pdf_documents/head_porting.pdf

 

[Frank The Tank]

http://www.audiforums.com/forum/showthread.php?t=80267

step by step instructions.

Frank

 

[1988Rangerxlt]

does anyone have info on intakes?