I have a set of trick flow heads I am going to use on my new engine. Has anyone actually done the "slotting" of the center two bolt holes to install a late model (87+) manifold on early style heads? What is involved? Thanks.

 

You can do it with a dremel tool with a stone bit or wit a drill and a drill bit.The dremel tool makes it alot easier to elongae the hole.

------------------
Superman
Rev'n to Seven

 

Yup! I did it with a circular file and a die grinder. I used the die grinder to make the coarse cuts, then used the circular file for the final finish-work.

Actually, I adapted an early style intake to late-model heads.

Worked like a charm.

------------------
Daniel Burk
http://www.isthq.com/~dan/fcar.html
'84 Trans Am WS6/L69
KB SFC, Moser axles, Torsen Diff. PST suspension, Braided stainless brake lines,
5-point racing harness, Koni struts, 11-inch rear disks,Spohn Adj. torque arm,
Ported 305 heads w/1.94"intake valves, Comp Cams XE262H, Griffen alum. radiator,
Speed-sensitive steering conversion, underdrive pulleys, Crane Hi-6 & more. 1.05g skidpad verified.