[Umbriel]

Originally Posted by cad78

How much backpressure? I would guess you may be limited by your turbine size more than the cam.

It hasn't been tested but Huron Speed made 300 more hp than I did with the same turbos and same size motor.

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[Umbriel]

Originally Posted by Joshinator99

Cam selection needs to be for your twin setup, specifically. No doubt about it, as you’re seeing.

I definitely an, I just wanted to run it by people with more knowledge than I have.

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[Umbriel]

Originally Posted by 95 imp

Blower cam timing and turbo cam timing are very different animals.

Do yourself a favor and change the cam.

I'm definitely going to have to I think.

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[wnta1ss]

Have to agree with the other guys, the cam specs that you listed do not look like what I'd want with twin turbos.

[Umbriel]

Originally Posted by wnta1ss

Have to agree with the other guys, the cam specs that you listed do not look like what I'd want with twin turbos.

That seems to be the consensus so I am going to look into getting one spec'd for my motor and turbos.

[KingLT1]

Just to support what I was saying prior. Cam motions largest shelf Turbo cam is a 234/245 115 and has 9.5 degrees of overlap. That is less than half of your current cam which is still a little more than I would want. I would probably look at the 227/238 114.5 for a streetcar (3.5 degrees).

[Umbriel]

Originally Posted by KingLT1

Just to support what I was saying prior. Cam motions largest shelf Turbo cam is a 234/245 115 and has 9.5 degrees of overlap. That is less than half of your current cam which is still a little more than I would want. I would probably look at the 227/238 114.5 for a streetcar (3.5 degrees).

Even for a 416? To me those specs seem a little small for 416 cubic inches, but I'm no mechanic either.

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[LT1ornothing]

Originally Posted by KingLT1

Just to support what I was saying prior. Cam motions largest shelf Turbo cam is a 234/245 115 and has 9.5 degrees of overlap. That is less than half of your current cam which is still a little more than I would want. I would probably look at the 227/238 114.5 for a streetcar (3.5 degrees).

^ THIS! Should also idle nicely, I had a similar cam on a turbo 6.0 LQ9 some years ago.

Originally Posted by Umbriel

Even for a 416? To me those specs seem a little small for 416 cubic inches, but I'm no mechanic either.

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You don't want to over cam FI street cars, let the boost do the hard work and keep the stress off the valvetrain in my opinion. A cam like King suggests, possibly tweaked by the cam profiler of your choice for your exact build and usage is the way to go.

[Umbriel]

Originally Posted by 1LEornothing

^ THIS! Should also idle nicely, I had a similar cam on a turbo 6.0 LQ9 some years ago.



You don't want to over cam FI street cars, let the boost do the hard work and keep the stress off the valvetrain in my opinion. A cam like King suggests, possibly tweaked by the cam profiler of your choice for your exact build and usage is the way to go.

Thanks! I'll contact someone about it.

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[ZL14ever]

I agree with everyone else that the current cam is not ideal for Turbo. However, I don't believe a cam change will give you the 300rwhp that you are missing compared to Huron speed car

IMO, you have another problem somewhere else

[Umbriel]

Originally Posted by ZL14ever

I agree with everyone else that the current cam is not ideal for Turbo. However, I don't believe a cam change will give you the 300rwhp that you are missing compared to Huron speed car



IMO, you have another problem somewhere else

Probably not but I am not looking for that at the moment, I'd probably need to do a better intake and a good set of heada to get there which I might do later on. I'm just trying to get it to make more power over 20 poinds where it falls on it's face and be closer to 1100 right now which is definitely doable with this set up.

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[ZO6Ted]

I really like cam motion also. And yeah no need to go huge on turbo cams. May have heard of Jarrett Faggart (Stock 48) and his fairly famous triple 12? Choda knows him. 112 Int 112 Ex 112 lobe separation about .570 lift. As I recall he made 950+ with a 76mm sbe 6.0 LS, home ported 317 heads, truck intake manifold on 93 drinking meth like I drink Corona (a lot lol)! 9.6x at 143-144 @ 4920 RW. Granted it needed torque to move a 4wd not a Camaro but you see the point huge isn't needed. Definitely sub'd here.

[Umbriel]

Originally Posted by ZO6Ted

I really like cam motion also. And yeah no need to go huge on turbo cams. May have heard of Jarrett Faggart (Stock 48) and his fairly famous triple 12? Choda knows him. 112 Int 112 Ex 112 lobe separation about .570 lift. As I recall he made 950+ with a 76mm sbe 6.0 LS, home ported 317 heads, truck intake manifold on 93 drinking meth like I drink Corona (a lot lol)! 9.6x at 143-144 @ 4920 RW. Granted it needed torque to move a 4wd not a Camaro but you see the point huge isn't needed. Definitely sub'd here.

Cool thanks, I'm going to get in touch with cam motion early next week.

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[CamOnlyJabroni]

Just a +1 for CamMotion over here. I had kip spec me a LLSR for my 96’ Camaro. That old motor screams and runs very well for what it is. N/A 383 rips to 7,300rpm.