10 "DON'TS"
1:2:Don't start an extensive porting exercise until you have completed some simpler projects.

3:Don't start your intended porting job unless you are prepared to see it through to the end.

4:Don't worry about a shine on the finished surfaces.

5:Don't, under any circumstances, start without appropriate tools, cutters, die grinders and some old valves for seat protection.

6:Don't overlook budgeting for a valve seat job and possibly head/manifold milling.

7:Don't ignore loose valve guide fits as this costs more power than you might at first suspect.

8:Don't skip safety measures such as a mask and glasses.

9:Don't port in the same space used to assemble engines.

10:Don't sweat not having a flow bench - yet!

SOURCE
Cylinder Head Abrasives (CHA)
3250 Monier Circle, Units G & H, Dept. EM
Rancho Cordova
CA  95742
Brodix Inc.
301 Maple, P.O. Box 1347
Dept. MMFF
Mena
AR  71953
Audie Technologies
23 N. Trooper Rd. Dept. EM
Norristown
PA  19403
Canfield Cylinder Heads
580 West Main Street,
Dept. MMFF
Canfield
OH  44406
Dart Machine
Troy
MI
Roger Helgesen
20100 Hamilton Ave. Dept. EM
Torrance
CA  90502
Edelbrock Corp.
2700 California St.
Torrance
CA  90503
310-781-2222
www.edelbrock.com
Air Flow Research (AFR)
Valencia
CA
N/A
www.airflowresearch.com
World Products
35330 Stanely Dept. EM
Sterling Heights
MI  48312
Holley Performance Products
1801 Russellville Rd.
Bowling Green, KY 42101
KY  42101
270-782-2900
www.holley.com
Super Flow
3512 North Tejon Dept. EM
Colorado Springs
CO  80907
Standard Abrasives
4201 Guardian St.
Simi Valley
CA  93063