topfig1

iTrader: (5)

So if I'm reading correctly, My comp Cam 212/212 574 lift 115 LSA is really not going to give me much power at all. Correct me if I am wrong.

topfig
MGySgt USMC

RyanJ

i wouldnt say no power, but comparibly less than say a B1-221/221 .558/.558 114

Ryan

Damian

iTrader: (89)

[quote]The stock elimiator guys do that all the time. <hr></blockquote>

Well Terry, last time I checked nobody on this board drives a stock eliminator car to work everyday. We aren't talking about cars they aren't driven on the street. I am well aware what stock eliminators run. Thanks


Josh

Rockatenskie

I have a 214/214 cam,.560 lift,how good is it,how much hp.Is a Compcam,very quite.

Louis

iTrader: (7)

[quote]Chris Johnson's car with a tiny lift cam, but HUGE duration made 441 rwhp on a stock short block, and cruised down the strip to an 11.x at 123 mph . His dyno graph also shows that cam making tq all over the place, much more than almost any other cam I have ever seen.<hr></blockquote>

actually that pass was made BEFORE the addition of his ported TB, lager injectors, and LS-6 intake. for that run @ 123, he only made 410/400.

after the addition of those other parts, he made 432/416, but then shortly thereafter broke a ringland. why do i know this? because I dynoed the car for him. not a nock on chris, but i HATE wrong numbers especially when people sway them. no doubt his car is fast....just stating the truths.

Damian

iTrader: (89)

[quote]Originally posted by G2 LS1:
<strong>

actually that pass was made BEFORE the addition of his ported TB, lager injectors, and LS-6 intake. for that run @ 123, he only made 410/400.

after the addition of those other parts, he made 432/416, but then shortly thereafter broke a ringland. why do i know this? because I dynoed the car for him. not a nock on chris, but i HATE wrong numbers especially when people sway them. no doubt his car is fast....just stating the truths.</strong><hr></blockquote>


Thanks for clearing that up. Even though I got those figures directly from one of Chris's posts, if you say you dyno'd the car then cool. Still very impressive HP #'s.

VINCE

iTrader: (1)

So 432/416 brings Chris J. back into the realm of other GTP guys. So his cam really does the same as other with that package..

Damian

iTrader: (89)

[quote]Originally posted by vmoore:
<strong>So 432/416 brings Chris J. back into the realm of other GTP guys. So his cam really does the same as other with that package..</strong><hr></blockquote>


I wouldn't exactly say that. There are a "few" heads/cam cars making that much power, but not a lot. Most are in the 400-415 rwhp range. That setup is definately one of the higher performing ones.

Josh

Brownie

Wow!

This is interesting. I was under the impression that h/c ls1 motors were responding very well to more extreme ramp rates. I know its hell on springs, but I thought the double springs and a thorough warm up process along with proper installation helped this situation.

I am also interested in seeing whether the 112 lsa is really giving more midrange (along with peaking at lower rpm) and not just a rougher idle than the 114 lsa.

Mike

Trevor @ Texas Speed & Perf.

iTrader: (3)

After seeing the higher duration/lower lift cams from GTP that seem to be making really nice power and producing great ET's, it makes you wonder if GM knew what they were doing with the hotcam and ASA cam? However, when you look at the power that the hotcam is making with stock heads vs. the B1, T1, TR224, etc., it seems to be making an average of 8-10 RWHP less at the peak. I've never seen an overlay of the hotcam vs. one of the other cams, so I don't know how they compare under the curve. I would love to see how the torque curves compare, though.

VINCE

iTrader: (1)

Another question. I just got off the phone with a mechanic and we were discussing adjustable valve trains and things. Are ours adjustable and if not would I benefit by purchasing one? He also mentioned that my cam is a good cam, but a cam better suited for his heads would be 226/228 550/560 lsa 114.. Would I see that much of a difference?

Terry Burger

iTrader: (4)

I've found that LS1 motors don't really care much about cams. 218-229 duration single pattern cams seem to make the same power. Lift doesn't seem to matter much either (although it's cyl head specific).

The off the shelf comp split patterns (212/218, 216/220, 224/230) seem to make the same power as their single pattern counterparts, with a little rougher idle.

Although 112ls camshafts are supposed to make more midrange than 114ls camshafts, that doesn't seem to hold true on LS1 setups, with the only difference between 112ls and 114ls camshafts appearing to be idle quality.

The GM hotcam is "ok" but has a bad idle for the power it puts out, the LS6 camshafts are pretty weak and most suggest the comp 212/218 in their place.

VINCE

iTrader: (1)

What about my adjustable valvetrain question?

racer7088

Lift is all good except for reliability. I think if GTPs cams have less lift it's probably becasue of the spring situation with the LS1.

Louis

iTrader: (7)

chris did EVERYTHING in his power to get those numbers. small tires, 50 PSi in the tires, playing with the special MAFT that he had, you name NEdyno trick in the book and it was done. just B/c he had small lift doesnt mean squat. the extreeemly fast ramprates made up for anyhting lost in low lift. the car was insane, idled like a car thathad a 110 LSA in it. he never broke a 941 though. oh well, what more can i say. ill get off the soapbox now, just clearing some things up . later,

Matt98SS

ok I saw someone mention ramp rate so this brings me to my questions at hand and what I am trying to figure out for my car.

Indefinately I am gonna go with a split duration cam for nitrous sakes so keep that in mind

ok lets compare to off the shelf cams any old fella off the street can buy with close intake duration #s

MTI T1 what I have in there now

with intake and exhaust durations at 283 adv. and 221 @.050 with .558 lift and 112

now we take say a comp cams xtreme energy one.

intake duration is 269 adv. and 220 @.050 with .537 lift

and

exhaust duration is 275 adv. and 226 @.050 with .537 lift on a 114 LSA

which cam will make more power NA say with stock and/or ported heads - Say I have some heads ported by shop X that I could really care less about flow at .600"

I would give my nod on the comp grind for making more power on nitrous.

obviously the LSA are a bit different so the idle on the comp may be better but also may be the same cause the 226 exh. duration?

Will ADVERTISED durations have more effect on idle or will @.050 durations have more effect?

the comp cam has more extreme ramp rates but less lift.

so what do you all think? <img src="graemlins/fluffy.gif" border="0" alt="[Fluffy]" />

u8dusst

I have a question about the T1 cam vs the B1.

The only difference between the T1 and the B1 cam is the LSA right? So I guess im asking
T1 cam owners, why the T1 instead of the B1?

Just a theory, but is it because the midrange torque of the T1 compared to the more high end power of the B1?

Oh yeah, and if you have dyno sheets of your T1 or B1 cams, thatd be great. <img src="images/icons/cool.gif" border="0">

LunaticTA

Wow, great thread, I wish I understood more of it.. <img src="images/icons/shocked.gif" border="0">

Ok, you guys seem to have the cam specifics down, so here is a question, I am getting ready to put a cam in my stock headed car, and was looking at the B1-221/221 .558/.558 114.

The thing is, I would like it to be a little bit more of a sleeper, so how would the cam be hindered if I had a custom grind done that just stepped the lsa up to something like 115.

anyone done this? I would like to stay away from the idle problems if at all possible..

Thx,

Chuck

VINCE

iTrader: (1)

From first hand experience.. The question about the split duration cam from comp against the T1. I can tell you now I have smoked many comp cams with similar specs that you mentioned with heads on their cars. I have the T1. Nitrous cams dyno less and usually have less under the curve than a dual pattern.. I do not know the mechanics behind it, but I have raced many cars setup for nitrous on motor and I have beat them. When they spray me they win, but barely.. Why did I choose the T1 over the B1? Because someone local was selling the T1 for a steal..

LunaticTA

Wow, no response,, did I ask such a stupid question that nobody wants to answer? <img src="images/icons/grin.gif" border="0">

Chuck