[Blackdevil77]

Originally Posted by ULTRAZLS1

Impressive that the lt1 makes as much power as it does with the same displacement with a smaller cam than the ls3.

Why do you think they went with a smaller cam than the LS3 cam? Could it have something to do with the DOD lifters or something?

[Davy_Baby9]

Originally Posted by Blackdevil77

Why do you think they went with a smaller cam than the LS3 cam? Could it have something to do with the DOD lifters or something?

I would assume emissions, and and easy power bump after a couple years. Revise the cam slightly, bam 475 HP / 475 TQ.

My opinion anyways.

[LesserO2Evils]

Originally Posted by Davy_Baby9

I would assume emissions, and and easy power bump after a couple years. Revise the cam slightly, bam 475 HP / 475 TQ.

My opinion anyways.

Wouldnt be the 1st time GM did that. LS6 comes to mind, instantly. Were a LOT of P-oed 01 Z06 owners!!!

[Blackdevil77]

I would be one of those pissed owners lol. What do you think you would gain, if anything, just by simply swapping the cam for an LS3 cam? 10-15 rwhp? I don't think you'd have to change anything else by doing that.

[ULTRAZLS1]

Originally Posted by Blackdevil77

Why do you think they went with a smaller cam than the LS3 cam? Could it have something to do with the DOD lifters or something?

As others have said possibly emissions. The less time the valves stay open ( duration) the better it will be for emissions. Easy power bump? I'm sure that's a possibility as well... Leave a little on the table for the future...

Also looking at how it builds power smaller cams tend to fall off quicker but make better torque in the meat of the powerband etc. Maybe they liked how it performed with the small cam and easily hit emission and power goals etc. hard to say...

I would like to see how the lt1 graph would look with the ls3 cam profile. Would be interesting. As far as power gains from it... Hard to say. With the only main difference being the duration I would say 10 or so. Not huge.

While you could still stay with the stock springs and the base circle may not change being both GM cams ( re use pushrods... Aftermarket cams have a smaller base circle requiring longer pushrods typically).... That's just a lot of labor for 10 hp. You won't find me changing a cam for that return...

I'm also not sure if cams are interchangeable between them... I'm limited on lt1 knowledge at this point. Regardless you could spec one the same if you really wanted to do it...

[Iroc_Z28]

Originally Posted by ULTRAZLS1

I'm also not sure if cams are interchangeable between them... I'm limited on lt1 knowledge at this point. Regardless you could spec one the same if you really wanted to do it...

I doubt the ls3 and lt1 cams are interchangeable... the lt1 utilizes VVT and IIRC, the direct injection pump is run off a dedicated cam lobe... i would think removing VVT from the lt1 would be taking a step backwards, i'm pretty sure there are hotter vvt cams out for the lt1 already and are giving impressive results

I think the next step for GM is to use a cam-in-cam VVT camshaft similar to the Viper's, maybe in the next Z28?

[LesserO2Evils]

With DOD and all that mess, I find it incredibly unlikely that the cams would interchange. But, I really don't know.

[ULTRAZLS1]

Originally Posted by Iroc_Z28

I doubt the ls3 and lt1 cams are interchangeable... the lt1 utilizes VVT and IIRC, the direct injection pump is run off a dedicated cam lobe... i would think removing VVT from the lt1 would be taking a step backwards, i'm pretty sure there are hotter vvt cams out for the lt1 already and are giving impressive results

I think the next step for GM is to use a cam-in-cam VVT camshaft similar to the Viper's, maybe in the next Z28?

Originally Posted by LesserO2Evils

With DOD and all that mess, I find it incredibly unlikely that the cams would interchange. But, I really don't know.

I really doubt it as well.

The link I posted with the 511rwhp cam only retained VVT but deleted DOD. Not surprising.

[Blackdevil77]

Originally Posted by ULTRAZLS1

As others have said possibly emissions. The less time the valves stay open ( duration) the better it will be for emissions. Easy power bump? I'm sure that's a possibility as well... Leave a little on the table for the future...

Also looking at how it builds power smaller cams tend to fall off quicker but make better torque in the meat of the powerband etc. Maybe they liked how it performed with the small cam and easily hit emission and power goals etc. hard to say...

I would like to see how the lt1 graph would look with the ls3 cam profile. Would be interesting. As far as power gains from it... Hard to say. With the only main difference being the duration I would say 10 or so. Not huge.

While you could still stay with the stock springs and the base circle may not change being both GM cams ( re use pushrods... Aftermarket cams have a smaller base circle requiring longer pushrods typically).... That's just a lot of labor for 10 hp. You won't find me changing a cam for that return...

I'm also not sure if cams are interchangeable between them... I'm limited on lt1 knowledge at this point. Regardless you could spec one the same if you really wanted to do it...

Yes, that makes sense. I keep forgetting about the, oh so important emissions. I'm curious also to see how the graph and torque curve would look with an LS3 cam profile. Power gains would most likely be negligible, like you said.

This isn't something I would do. Just fun to talk about and speculate while we're waiting for production to start and for more information. Gotta stay entertained somehow lol. I won't be modifying the car this time around, it's just fun to talk about and see what can be done.

[ULTRAZLS1]

Originally Posted by Blackdevil77

Yes, that makes sense. I keep forgetting about the, oh so important emissions. I'm curious also to see how the graph and torque curve would look with an LS3 cam profile. Power gains would most likely be negligible, like you said.

This isn't something I would do. Just fun to talk about and speculate while we're waiting for production to start and for more information. Gotta stay entertained somehow lol. I won't be modifying the car this time around, it's just fun to talk about and see what can be done.

Sure you won't

Not even a cold air intake? Lol

I can never resist...

[Blackdevil77]

Originally Posted by ULTRAZLS1

Sure you won't

Not even a cold air intake? Lol

I can never resist...

No, you speak evil words! *puts fingers in ears* "la la la la"

Lol, it's very hard to resist, I always end up caving in and every time I do, I regret it and 99% of the time, it's due to tuners inability to tune the car properly. And I always did my research before going to a shop.

[ULTRAZLS1]

Originally Posted by Blackdevil77

No, you speak evil words! *puts fingers in ears* "la la la la"

Lol, it's very hard to resist, I always end up caving in and every time I do, I regret it and 99% of the time, it's due to tuners inability to tune the car properly. And I always did my research before going to a shop.

Yeah I remember our convo.

Cold air intake and under drive crank pulley both require no tune and should pick up a few honest hp together. Bo White ported throttle body also... Small gain but better driveability and response. And cheap. No tune required. I would also say a nice cat back but I think u said u wanted npp which is cool.

At least give her that much lol. Those things shouldn't cause a warranty problem and pick you up about 15-20 hp together no tune needed

But it's your car man... Just saying if I was terrified of tuning I would at least do those mods.

Or maybe I have a problem lol... I just put longtubes, cai and tune on my 14 Silverado daily driver haha. She's really got some pep now... So fun.

[Blackdevil77]

Originally Posted by ULTRAZLS1

Yeah I remember our convo.

Cold air intake and under drive crank pulley both require no tune and should pick up a few honest hp together. Bo White ported throttle body also... Small gain but better driveability and response. And cheap. No tune required. I would also say a nice cat back but I think u said u wanted npp which is cool.

At least give her that much lol. Those things shouldn't cause a warranty problem and pick you up about 15-20 hp together no tune needed

But it's your car man... Just saying if I was terrified of tuning I would at least do those mods.

Or maybe I have a problem lol... I just put longtubes, cai and tune on my 14 Silverado daily driver haha. She's really got some pep now... So fun.

I would consider those modifications that don't require tuning if they really show an improvement in 1/4 mile times/trap speeds and the extra power can be felt. If the gains are something that only a dyno would see, then I wouldn't bother. Now if I was loaded rich and bought 2 Camaro's, one would stay stock and the other would probably get cammed with long tubes, off road x-pipe, intake, etc.

[LesserO2Evils]

Originally Posted by Blackdevil77

No, you speak evil words! *puts fingers in ears* "la la la la"

Lol, it's very hard to resist, I always end up caving in and every time I do, I regret it and 99% of the time, it's due to tuners inability to tune the car properly. And I always did my research before going to a shop.

Haha! Nice try! You are SCREWED, JACK!!!
(Prompted internal monologue unfolding..."Hmm...'screwed'... I wonder if an Eforce or KB would fit under the stock hood? If I did that, I wouldnt have to worry about emissions compliance and wouldn't be nickled and dimed with 3/4hp here and there... I coukd get the Hp level I want in one fowl swoop!! Maybe I should consider THIS route, this time? It would still DRIVE LIKE STOCK?"