The intake that i got is the edelbrock performer w/ EGR and a holley adaptor for TBI. I already have my old manifold off, and when comparing the two, i noticed that my old one's water passages are different then the new ones. The new one (looking at the manifold from the front as it would be on the car) doesn't have the two water passages in the back. My older one has the rear left water passage blocked off as well as the middle right. The new manifold has the front and the middle water passages, but nothing in the rear. Will this be a problem when i install it?

Also, my old tbi manifold had two egr openings, one was round and the other was rectangular. The new manifold has the round opening, but instead of the rectangular one it has a smaller round opening which won't even line up with the egr valve.

Thirdly, the new intake manifold doesn't have an opening for the power brake vacuum line. What should i do with this problem?

The part # of the manifold is 3701, should i just return this manifold and get the one specifically for tbi? Thanks for any help, i'm hoping to get this done today.

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Pat Hirsz
www.iit.edu/~hirspat/MyPage2.htm
88 305TBI
Mods:Hooker Aerochamber 3" exhaust, gutted kitty, March pullies, no smog, 180 thermo,
14x4 K&N, 3.42 gears, Ultimate TBI Mods,AFPR,
Eibach springs with KYB's all around,
Harwood cowl hood, Z-28 wing, fresh paint(black)
120,000 miles, 5spd, T-tops
Edelbrock Performer TBI w/ MSD ignition & wire getting installed next week,slp headers on its way

92 RS, 305TBI, auto, 3.08 gears, 180 thermo, glasspack (no muffler)

 

I dont think that having the back water pasages blocked will make any difference because the coolent cant go anywhere in the back anyway.In the front both sides are connected so the coolent can go through the thermostat and out to the radiater completing the cooling cycle.the middle pasages are internal exhaust pasages for the egr and to warm the manifold. the manifold you perchased takes an older style EGR valve wich I think will be in the way of the IAC? on the TBI, onless you use a tall spacer to get over it. the old style EGR is larger then the one you have.I bought a performer egr then sent it back and got a performer tbi.If you use the manifold you have you will have to tap in to manifold vacume some where else for your power brakes.That will be easy if you get everything hooked up.I didn't want the hassle so I bought one that would bolt right up.