Quote:
Originally Posted by BYprodriver
As JR posted the head castings are the same, & all bolt bosses are there. You just have to drill & tap the holes for the intake & exhaust parts you are using.
986 3.2 head has untapped bolt bosses to mount heat shields in 996s |
Yes, I am aware of that. That's exactly what I did, but you make it seem ALOT simpler than it actually is. Being that both of my engines were out, I made a template for the 2.7 manifold and outlined the holes on the 3.4 head. I then removed the heads, and drilled the mounting bosses on a drill press since I wanted them 100% accurate and straight. I set up levels, used a lot of shims under the head, and then clamped it down to the machine to make sure the drill bit was exactly 90 deg to the hole I was tapping. Since it was a used engine, I didnt mind changing the valve seals and lapping the valves anyway.
I dont know if I'd have the nads to just take a home depot drill into my engine bay and try to drill the holes for the 996 manifold, but im sure it can be done.