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Old 03-15-2005, 00:05   #1 (permalink)
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GXL 302C EGR plate

Hi Lads
Can the EGR Plate From a 4 barrel Factory manifold Be removed?
It's running a 425 Impco Mixer, Trouble is were trying to fit a shaker kit but the Mixer sits too high.
I thought if we remove the EGR plate then refit the mixer all would be good? Yes?
Thanks
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Old 03-15-2005, 00:15   #2 (permalink)
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Re: GXL 302C EGR plate

What base plate (throttle butterlys) are you using on the impco?

Because you will find that without some sort of spacer on the standard manifold, the throttle linkages with foul the side.

You may be able to get away with it if you grind a chunk out of the manifold.
You will also need to get a stainless steel gasket to block of the EGR passages in the top of the manifold.
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Old 03-15-2005, 01:59   #3 (permalink)
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Re: GXL 302C EGR plate

I used to run that setup, it will work just make sure that you properly blank off your EGR port in the inlet manifold otherwise no props. I am assuming that you are still using the thermoquad throttle body. I recomend you switch to a single plane manifold such as the redline then you can fit the impco directly to a holley square bore throttle body you will get far better perfomance. Good luck
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Old 03-15-2005, 02:20   #4 (permalink)
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Re: GXL 302C EGR plate

Cool thanks guy's, And yes It's still running the thermoquad throttle body.
Ill check out changing the Manifold first.
Cheers
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Old 03-15-2005, 02:44   #5 (permalink)
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Re: GXL 302C EGR plate

Anyone with a Single Plane Street Torker Manifold For sale ??
Hit me on the PM

Cheers
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Old 03-15-2005, 13:41   #6 (permalink)
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Re: GXL 302C EGR plate

Is it legal to remove the EGR function and are there
any gains by doing so?
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Old 03-15-2005, 15:44   #7 (permalink)
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Re: GXL 302C EGR plate

it is if your running Straight LPG, no polution eqipment is required to my knowledge
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Old 03-15-2005, 20:11   #8 (permalink)
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Re: GXL 302C EGR plate

The squarebore Holley throttle body is a much neater fit, The carbs are MADE for them. There a many spreadbore to squarebore adaptors available to suit the Thermoquad manifold or you could change to a squarebore manifold. Some people recommend a single plane for straight LPG. I used to run a thermoquad throttle body but it needed TWO adaptor plates and a spacer so the secondaries didn't hit the manifold. It was a very tall combo.
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