programing and mods

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Apr 5, 2004 | 11:37 AM

rtracy

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Racer

Joined: Jan 2004

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From: NY

programing and mods

I am putting a cam in my car along with port and polished heads and intake. Does anyone know if my car will run without reprograming the computer? Thanks, Ray

Apr 5, 2004 | 11:43 AM

tjwong

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From: Portland Oregon

Re: programing and mods (rtracy)

Ray it really depends on what cam you are going to. And of course what year your car is. For instance the 92/93 LT1 cars are speed density controlled EFI so that means even a LT4 HOT CAM will require tuning to make it run decent. Now if you have a 94/95 LT1 car then definitely the car will start and run fairly well with a HOT CAM, but it will also benefit greatly with a good calibration. This is just an example, if you go with cam larger than a HOT CAM then you can expect it to run worse as you skew the VE of the engine more.

Apr 5, 2004 | 01:17 PM

rtracy

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Racer

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From: NY

Re: programing and mods (tjwong)

TJ,
I have a 95 LT1 and the cam is bigger than a hot cam. The reason why I am asking is because after I do the work I need to drive it to get it programed. I was woundering if it was going to sart and run long enough to do so.

Apr 5, 2004 | 01:41 PM

tjwong

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From: Portland Oregon

Re: programing and mods (rtracy)

Yes it will start and drive. How big is big if you don't mind me asking :)

Apr 5, 2004 | 02:26 PM

rtracy

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Racer

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From: NY

Re: programing and mods (tjwong)

I went with 230/236 duration @.050, .544/.555 lift with 1.6 roller rockers and a 112 lobe separation. (Not to radical).

Apr 5, 2004 | 02:31 PM

tjwong

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From: Portland Oregon

Re: programing and mods (rtracy)

Thats a pretty healthy cam. Its not quite as large as a Comp 306 cam but its certainly close. The 306 cam is 230/244 on a 112. I hope that you don't have to pass emissions with this cam :) Its going to sound good thats for sure.

Apr 5, 2004 | 11:33 PM

rtracy

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Racer

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From: NY

Re: programing and mods (tjwong)

No, I don't have to pass emissions. It is a visual here in PA thank god. They want to take all of our fun away.

Apr 6, 2004 | 07:20 AM

Red Tornado

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From: OBAMA IS HITLER

Re: programing and mods (rtracy)

Quote:

No, I don't have to pass emissions. It is a visual here in PA thank god. They want to take all of our fun away.

Luckily, you don't have a '96 or newer. I feel the same way as you do, but its not that bad since its only a visual & gas cap on '95 and older cars. The whole emissions/federal blackmail thing we got to inherit from that blasted Clinton administration is just another abortion from them :U