I'm about half way through my vortec head/base swap, and I am kind of got a problem. There are more holes in the new base than the old. Can you guys help me identify some of them and what I need to do with them

http://www.sdpc2000.com/htm/vortec_tpi.html

#1. The bolt hole inbetween the front driverside bolt holes. It is directly over the water passage but does not appear to go through to it.

#2. The hole inbetween the distributer hole and egr tube attachment. It does go all the way through to the passage. (not the dis hold down the other one.)

#3. Inbetween each injector pair is a small bolt hole.

I really need help here... sorry if I am a little incoherent, but I spent all day in the garage tearing down the engine and I am a little worn out to say the least.

------------------
-='89 Iroc-Z - 350 TPI =-


[This message has been edited by BitchinCamaro (edited November 23, 2001).]

 

Hey bud,
#1-the one on the front driver's side between the manifold bolt holes is for a small arm thing that holds a vacuum hose that comes off the throttle body, don't need it if you don't have it, it doesn't go all the way through.
#2-Its probobly is there for some bracket that not all cars had. If you don't have anything to put on it, just plug it. Simple!
#2-The little holes between the injectors- i don't know what they are for, but you can leave them the way they are. Most aftermarket manifolds have them, my Accel does. I left them open- no problem there.
Hope this helps.

------------------
'88 RS (originally 2.8)
-350, .040 over, vette alum. L98s, stock tpi.
-305 injectors & chip
-TES headers & edelbrock cat back
-3.73 gears, 700r4.
Best with 2.8-17.4@77mph
Best with 305-15.0@93mph
Best with 356-13.7@101mph
on a 2.050 60 ft.
(Damn the 2.8!)


[This message has been edited by '87FAKE-IROC-Z (edited November 23, 2001).]