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Old Man · 01-12-2009, 09:53 PM

Any have any experience with the latest cams and heads using the GT40 intake stuff?

The 89 LX coupe I bought last week has a GT40 intake system, bigger throttle body, full length headers, Flowmasters, and 4.10 gear. It has a good clutch but no other mods I know of.

I want to have a car that can hold its own with any factory car like a new Vette but that I can still drive around on occasion.

Anyone been through the exercises? I could put a blower on it, or change the heads and cam. I want to be able to street it.

I was thinking of two ways to go...either TFS heads and a X303 cam or the latest aluminum GT40 heads, stock cam, and a blower. I could ditch the 4.10 gear if I went blower, and go to a 3.55 or higher gear.

One thing that bothers me about the blower is the T5 tranny. It will handle RPM more than torque, although I am not planning on anything but street tires!

The plus of the cam is I like the sound of a lot of valve overlap.

Anyone have any idea if the TFS heads and X303 cam will do it for me? Or if a blower and smaller heads are in my future? I'd like to keep the GT40 intake stuff and the hedders I have because they are all fancy powder coated show car looking stuff.

What kind of problems am I looking at?

Thanks!
Tom

01-12-2009, 09:53 PM	#1
Old Man Registered Member Join Date: Jan 2009 Location: Georgia Posts: 4	89 5.0 heads and stuff Any have any experience with the latest cams and heads using the GT40 intake stuff? The 89 LX coupe I bought last week has a GT40 intake system, bigger throttle body, full length headers, Flowmasters, and 4.10 gear. It has a good clutch but no other mods I know of. I want to have a car that can hold its own with any factory car like a new Vette but that I can still drive around on occasion. Anyone been through the exercises? I could put a blower on it, or change the heads and cam. I want to be able to street it. I was thinking of two ways to go...either TFS heads and a X303 cam or the latest aluminum GT40 heads, stock cam, and a blower. I could ditch the 4.10 gear if I went blower, and go to a 3.55 or higher gear. One thing that bothers me about the blower is the T5 tranny. It will handle RPM more than torque, although I am not planning on anything but street tires! The plus of the cam is I like the sound of a lot of valve overlap. Anyone have any idea if the TFS heads and X303 cam will do it for me? Or if a blower and smaller heads are in my future? I'd like to keep the GT40 intake stuff and the hedders I have because they are all fancy powder coated show car looking stuff. What kind of problems am I looking at? Thanks! Tom