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Old 04-03-2007, 03:31 PM   #1
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Car: 1986 Camaro Z28
Engine: LG4 305
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LG4 Cam advice
I have a 1986 Z28 camaro with the LG4 carbed 305 its all stock with all the smog etc the only mods ive done are a 3 inch flowmaster cat back and a K&N filter i want a bigger cam but i also want to keep all the smog and computer controled carb on and i dont want to have a check engine light on any advice ?
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Old 04-03-2007, 03:47 PM   #2
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Re: LG4 Cam advice
The Comp XE256 is known to work well in that motor. Crane also has a cam that's similar.

You're looking for about 210-214° @.050" on the intake, and a somewhat bigger exhaust lobe than that. But not the Summit cheeepie, something better (more modern) than that.
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Numquam ponenda est pluralitas sine necessitate.
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Roughly paraphrased into modern English, and applied to figuring out what's wrong with your car:

The simplest explanation that fits all the facts is probably the right one.
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Old 04-03-2007, 04:34 PM   #3
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Re: LG4 Cam advice
So that Comp XE256 will work with the computer and not throw codes ? and i can retain the computer controlled carb and distribuitor ?
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Old 04-03-2007, 05:11 PM   #4
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Re: LG4 Cam advice
__________________
Numquam ponenda est pluralitas sine necessitate.
— William of Ockham, from Quaestiones et decisiones in quattuor libros Sententiarum Petri Lombardi

Roughly paraphrased into modern English, and applied to figuring out what's wrong with your car:

The simplest explanation that fits all the facts is probably the right one.
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Old 04-03-2007, 05:43 PM   #5
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Engine: LG4 305
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Axle/Gears: Richmond 3:73 Posi trac

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Re: LG4 Cam advice
Thats great how much hp and tq increase do you think it would do on that stock LG4 with a flowmaster 3 inch cat back and a dual snorkal aircleaner with a K&N
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Old 04-05-2007, 09:54 PM   #6
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Re: LG4 Cam advice
I have an LG4 in my 83 Z-28. I went with the XE-262 and I am very happy with the results No check engine light and idles nicely on the street. Here is a sound clip of mine. I have edelbrock headers and a flowmaster cat back.

http://videos.streetfire.net/video/9...d100eafed6.htm
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Old 04-05-2007, 09:54 PM
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