S/C with 112 cam
Thread Starter
Teching In
Joined: Nov 2002
Posts: 38
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From: CT
S/C with 112 cam See H/C set up in signature. I am very happy with my current h/c set up. I have searched this section and realize that a lower duration cam and lsa would yield the best performance/ hp numbers for a supercharger. Is anyone currently running a cam similar to mine with a s/c? How much additional power did you gain over your current h/c set up if any? Any suggestions?
TECH Apprentice
Joined: Jan 2004
Posts: 327
Likes: 0
From: Kansas City, Mo
wherever you got the info on the cam is wrong. low duration high lift and high lsa yields the best power results. the lowest you should go with lsa is 114. after that its not allowing the s/c to help the motor make its max HP with the boost.
Yeah a 112 is not the perfect setup for a S/C or turbo, but with that said I think his name is HUGGER SS or something close to that is making 600+ with a Hot cam on a 112. It can work just not as well as another cam that is not bleeding off you boost out the exhaust with all the overlap in the cam ETC... I'd be more concerned with your compression ratio. Were your heads milled ar anything to bump up the compression? If so it is probably not worth it to you, *** you would want to lower it or at least keep it stock at bare minum. It is your choice and just when one of us experts (Yeah right) tells you it won't work some one proves us wrong. Good luck!
Thread Starter
Teching In
Joined: Nov 2002
Posts: 38
Likes: 0
From: CT
Originally Posted by Inspector12
Yeah a 112 is not the perfect setup for a S/C or turbo, but with that said I think his name is HUGGER SS or something close to that is making 600+ with a Hot cam on a 112. It can work just not as well as another cam that is not bleeding off you boost out the exhaust with all the overlap in the cam ETC... I'd be more concerned with your compression ratio. Were your heads milled ar anything to bump up the compression? If so it is probably not worth it to you, *** you would want to lower it or at least keep it stock at bare minum. It is your choice and just when one of us experts (Yeah right) tells you it won't work some one proves us wrong. Good luck!
Originally Posted by Silver_Whistler
wherever you got the info on the cam is wrong. low duration high lift and high lsa yields the best power results. the lowest you should go with lsa is 114. after that its not allowing the s/c to help the motor make its max HP with the boost.
Now, I look at it this way...
-duration makes power
-superchargers need as much exhaust scavenging as we can get
-we want to minimize overlap to increase cylinder pressure and efficiency
A 218/224 won't make as much power as a 228/236, but when you go with more camshaft it affects the whole combo.
One of these days someone will try a 240/244 cam like Chris Mays at Comp was suggesting to me last year and we'll get to see how it does in a 348ci motor.
I run a 230/236//115/+2 Cam Motion grind.
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I still have not decided what system to buy but I will soon. When I do I`m gonna go with ported 6.0 heads and run my current cam at first just to see what it does, comp 234-240 XER 112* 598-608.
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Originally Posted by Pro Stock John
Hmmm... I beg to differ. Duration makes POWER.
Now, I look at it this way...
-duration makes power
-superchargers need as much exhaust scavenging as we can get
-we want to minimize overlap to increase cylinder pressure and efficiency
A 218/224 won't make as much power as a 228/236, but when you go with more camshaft it affects the whole combo.
One of these days someone will try a 240/244 cam like Chris Mays at Comp was suggesting to me last year and we'll get to see how it does in a 348ci motor.
I run a 230/236//115/+2 Cam Motion grind.
Now, I look at it this way...
-duration makes power
-superchargers need as much exhaust scavenging as we can get
-we want to minimize overlap to increase cylinder pressure and efficiency
A 218/224 won't make as much power as a 228/236, but when you go with more camshaft it affects the whole combo.
One of these days someone will try a 240/244 cam like Chris Mays at Comp was suggesting to me last year and we'll get to see how it does in a 348ci motor.
I run a 230/236//115/+2 Cam Motion grind.
With that logic then you can run a high duration cam , with a 108 lsa and still make good power- I don't think so.
Why do you think the Speed Inc car (Tom Izzo's orange Camaro) changed cams to a higher lsa?? BECAUSE the cam was bleeding off boost.
Do you have hands on experience or you merely just hypothesizing?
Originally Posted by Got Me SOM
what good is it if you have high duration and a lower lsa on a forced induction application?
With that logic then you can run a high duration cam , with a 108 lsa and still make good power- I don't think so.
Why do you think the Speed Inc car (Tom Izzo's orange Camaro) changed cams to a higher lsa?? BECAUSE the cam was bleeding off boost.
Do you have hands on experience or you merely just hypothesizing?
With that logic then you can run a high duration cam , with a 108 lsa and still make good power- I don't think so.
Why do you think the Speed Inc car (Tom Izzo's orange Camaro) changed cams to a higher lsa?? BECAUSE the cam was bleeding off boost.
Do you have hands on experience or you merely just hypothesizing?
And in fact that is what happens (assuming one constant engine displacement), except eventually the engine's performance levels off because of the amount of overlap and the ineffeciency of the combination.
It's been a while so I forget Izzo's dyno numbers with that big iron block/D1 combo, at one point it did around 700rwhp but I'm not sure if it was with the big first cam or the smaller followup cam.
It's been a while so I forget Izzo's dyno numbers with that big iron block/D1 combo, at one point it did around 700rwhp but I'm not sure if it was with the big first cam or the smaller followup cam.
Originally Posted by A DEE O
You are a complete moron. You think you know everything, and don't know ****. Keep your opinions to yourself there are people on here trying to gain knowledge not stuff from a horses ***. FWIW my car made the numbers in my sig. My cam is 224/224 561/561.........on a 112LSA.
for the record izzo's car made 699 with 4 lbs of boost with the smaller cam with spray. go look and gm high tech where they did the article and refresh your memory. they had issues with the cog belt slipping and the cam was changed to a higher lsa and guess what they made more power. They kept having issues with that piece of chit ATI unit so he ripped it out and went turbo but now the car is sold to someone else.
Talk to jim over there, he can explain to why.
Kiss my *** you fucken crook. ripped anyone off lately? who's the horse's *** now.
For the record:
414ci iron block
-D1, with stock intercoolers
-236/246/114
-15psi
-700rwhp with some belt slippage
-720rwhp with 50 shot and more belt slippage
-smaller cam was 226°/234° duration, .598/.599 inch lift, 117° LSA
-saw 20 psi with the smaller cam but had other problems and did not get a dyno number from this combination
I was present for the 700rwhp session.
414ci iron block
-D1, with stock intercoolers
-236/246/114
-15psi
-700rwhp with some belt slippage
-720rwhp with 50 shot and more belt slippage
-smaller cam was 226°/234° duration, .598/.599 inch lift, 117° LSA
-saw 20 psi with the smaller cam but had other problems and did not get a dyno number from this combination
I was present for the 700rwhp session.
Wow!!! there you go again Jeff I worked all day in Tampa and what do you do but get in a fist fight on the internet, did you do anything else like dyno your car(that has`nt gone 10.8 at 132). Try to be nice.
Let's all just calm down and have a little more discussion and no name calling. I like the thread I just want to hear more about everyone's theories and I can make up my own mind about what I will run ETC... I have theories too just I am working on them with my car and not on the internet we will see how they turn out.