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Old 04-21-2014, 10:58 AM
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grandprixgtx00 grandprixgtx00 is offline
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Port & Polish LIM

Hey guys! Haven't been on here in a long while. I bought myself another project car. 1997 Grand Prix GT.

I'm going to be replacing the Lower Intake Manifold gasket, and had a question.

I'm thinking about sending the manifold out to get ported and polished. My question is, if I do have the manifold ported, will the felpro lower intake manifold gasket work...or will I have to order a different gasket?

Also, should the PCM be programmed for this?
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Old 05-20-2014, 07:40 PM
rickisrad rickisrad is offline
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Re: Port & Polish LIM

Late reply but here is my opinion.
The felpro gaskets will fit and no pcm programming is required. Polishing the LIM is IMO a waste of money. you can barely see it. If you are looking for a show quality engine bay then go for it. Porting the LIM is a piece of cake. a good drill and some grinder fittings. you can gasket match the intake while porting so it is a good match. You will not notice really any power gain on a Gt unless you have maybe an HV2 and good airflow in.
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2004 GRAND PRIX GTP COMP G. VIN 4 :
OVERKILL CUSTOM PCM, WIZAIR CAI, ZZP TRAILING ARMS, W BODY STORE LATERAL ARMS, ALL POLY/SOLID MOUNTS, STB F&R, ZZP RACE TRANS, ALT REWIRE & VOLTAGE BSTR, 180 STAT, NGK TR6, MPS with 3.4 PULLEY, PACESETTER HEADERS, 1.8 ROLLER ROCKERS, FP REWIRE,ZZP COILS/WIRES, TB SPACER, D&S ROTORS, INTERCEPTOR SCAN GAUGE, CUSTOM STAINLESS 2.5 INCH CAT BACK EXHAUST.
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