Edelbrock Performer Intake 289 vs 302

[winokko]

Hi all,
I screwed up my Edlebrock performer 302 intake ...so I ordered a new one from Summit. They sent me what I guess is the NON-EGR Performer 289/302 which I mistakenly? ordered -new one has Performer 289 stamped on it. I noticed the Performer 289 doesn't have passages for the two rear ports (Non-EGR?? what is EGR exactly...emissions related?) So, impatiently, I decided to put it on anyway. Question is before I complete the install these two rear ports are causing me some concern as they are just blocked by the new intake. Will this be OK to just have these blocked like that or will they be the cause of some future leakage?

Next is the carb base on the new intake seems to be a lot smaller than the one from my old performer 302. Before the questions my previous set up was this from intake up 1) gasket, 2) 1/8" to 3/16" steel spacer/adadptor (not sure there from previous owner), 3) gasket, 4) plastic riser 1" tall, 4) gasket then 600 CFM edelbrock carb. Do I need this 1/8" to 3/16" steel spacer/adaptor...or can I just go gasket, plastic riser, gasket, carb which seems to fit better on the new intake? I'm asking because there is a good bit of overhang using the steel spacer where as the plastic fits better to new intake carb base.
Thanks for your help.

 

[oleguy74]

egr= exaughst gas return.ford had a spacer that had a egr valve on it.set carb on manifold ,see how it fits.the ports in back are water passages.if old has them get same as you had before.riser on new one may be higher on new one.if you are not sure change it for one like you screwed up.(only not screwed up).just kidding.

 

[broncnaz]

Ditto.
EGR is emissions related sounds like your stuff was already removed.
Not real sure what your talking about as EGR ports the 2 rear ports are waterports early 289/302 peformer manifolds had the ports new ones dont they just did away with them as they really didnt make any differance.
You dont need the steel spacer some people used them to help block heat. Same for the plastic spacer you dont really need it but it can help block heat and increase torque output. Not sure why the carb mounting surface is smaller maybe just better casting or they decided they could cut down on the amount of material used. I wouldnt worry about it just button her up and get her running again.

 

[winokko]

thanks alot broncnaz-
thats the answer I was looking for.