Ive done few search online and i ve seen 7875 with summit stage 2 cam .
Stage 1 or 2 what will be the real difference or result ?

 

If you not worried about a lumpy idle, go stage 2. If you prefer a mild lumpy idle and better diveability, go stage 1. For the difference in power, add about half a psi. In other words, don’t pick the bigger one for power, you’ll make about the same with better tq down low with the smaller cam. Only pick the bigger one for the idle and you don’t care about driveability.

I have the stage one. I had a stage 2 btr which is close to the summit stage 2 and I took it out and put a stage one. Much happier with it. I prefer a quieter, better driving car. The idle has to be higher with the bigger cam and it would wake everyone up in the morning when I cranked it. It was louder and lumpier. Now, no one gets woke up. and keep in mind you don’t need a big cam to go fast with a turbo.

 

I would consider powerband before I ever considered idle, you can adjust pretty much any cam to idle as rowdy or as tame as you want in the tune. Everyone has a different definition of "fast", but most guys running "fast" times rev them out far enough that a bit larger cam will make more power where they want it.

 

I've been hammered in a thread on here where people were comparing 2 cams, 1 tame and 1 rowdy. I tried to explain exactly what @SLOW SEDAN said above and everyone told me to GTFO except the OP of the thread. He went with my suggestion and later thanked me he didn't go with the rowdy cam

 

Put a bunch of timing in the idle cells, and presto....you now have a rowdy idle.

 

I've actually done the opposite, pull a bunch and it gets rowdy. Or drop the idle RPM and it gets rowdy too.

 

nah for the real OG shitty choppy "dad-cammed" 3/4 race sound you gotta crank the idle over/under spark waaaaay out like +/- 50*

guaranteed to make the guy at autozone impressed

 

quite frankly I don’t give a poop what people say about something when I’ve personally experienced it. Not that it matters, but I used to work at cam motion. Does that make me an expert? No. But I’d venture to say I’m no dummy when it comes to picking a bump stick. Sure. I’ll ask people’s opinions, wanting answers from people who have actually used a cam I may be interested in, but if someone chimes in and says “o that cam is this or that” and never even used it....well I don’t tend to listen to that.

replying to the above post by slow sedan. Sure, you can mess with timing to alter an idle, but that’s not the way I like to do things. I shoot for the strongest, smoothest, most stable idle I can attain at the lowest rpm I can and it not have problems dying or dipping. And when you do that, it doesn’t always idle lumpy or not lumpy. So yea you can fudge it, but I don’t. The power band of the smaller cam that I have now is much better. It pulls just as high rpm as the bigger cam, probably because the lobe sep is higher. I don’t like a low lobe sep anyways. I feel like a higher lobe sep is more forgiving in a street car that isn’t purpose built.

ive never really REGRETTED going with a smaller cam, just maybe decided I could have gone bigger and made more power, in naturally aspirated combos, but I will tell you, the one time I listed to someone else on cam selection, I was unhappy. Very unhappy. I won’t do that again, I knew better and that’s my fault.

anyone feel free to pick apart what I say. It’s cool. I expect it. I don’t know everything, but I’ll usually post from experience and if it’s not my personal experience, I’ll post where I got my reasoning from. Like in another thread. I recommended a muffler to someone. I’m running that muffler and I have tried others. I also stated that there was an independent Dyno test posted that included that muffler and it showed literally no power loss. So I posted that along with my personal assessment of the muffler.

 

True that. Nothing like idle surge to make a cam seem rowdy

I wasn't picking at your post at all, more highlighting that you can get a cam to sound how you want with tuning because too many choose a cam based on "sound"

 

O I know you weren’t. You were saying how people did that to you. I said that in case they wanted to try. Me and you, we cool

I should have mentioned none was aimed at you! Or anyone else who’s posted so far!

 

With the stage 1
And as it has been suggested the turbo 7875 (chinese ebay )
Keeping stock intake and bottom and heads.
How much HP could i get out of this setup?

 

Man I wouldn’t buy a turbo no name brand off eBay. I’d get a 7875 on3 or vs racing 7875. Everyone thinks all these turbos are the exact same because they are made in China. I’ll say they are close, but not the same. Anyways. Spend the $400 with vs racing or on3. I like either but you won’t get much communication from on3 but vs racing always replies to me within hours.

with the stage one, you could probably make more power than your bottom end would hold. I’ll venture to say that stage one or two isn’t near as important being turboed vs na. Depending on fuel system and boost, 600+ won’t be hard. At all.

 

I dont know if its me...but i dont see the summit stage 1 ls truck turbo. Online ? Only the stage 2 and up.

 

I though the stage 1 turbo cams went away and the stage 1 NA cam is also their boost cam.

 

It’s not a truck cam. It does list truck but all the other engines are listed.

here’s a link

https://www.summitracing.com/parts/sum-8715