Cam for L92 Heads: Lessons Learned
10-10-2010, 06:55 PM
#341
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At this point I've lost the cam card but the way i see it I just need to get a cam that will work. I need to mill the heads to get back to stock CR and get either a cam spec'd or get a good reliable suggestion.
as it sits, the car is stock with the exception of the l92/l76 H/I, hardened stock length pushrods, 921 springs and stock LS2 headgaskets, 1.75" pacesetter headers and spintech exhaust (no cats). It's also running MAFless on a SD tune. The injectors are 42lb. I believe, I bought the H/I from SDPP and I believe that's what they come with when you purchase the complete intake.
My tuner does a lot of cars here locally and elsewhere with great results, anything from stock ls1's to twin turbo 427 combos including land speed cars etc. Privately and for different shops in the state. It's been my experience that every tuner talks smack about the next tuner's abilities/tunes so I guess in that arena, as a "non tuner" all I can really say is that I feel he is competent. If I recall correctly the car made around 440whp on a DJ. track times are.. bone stock 13.8@102 1.9 60' after the mods 14.0@104 2.0 60' same track 3300' altitude
Thanks a lot for responding guys.
as it sits, the car is stock with the exception of the l92/l76 H/I, hardened stock length pushrods, 921 springs and stock LS2 headgaskets, 1.75" pacesetter headers and spintech exhaust (no cats). It's also running MAFless on a SD tune. The injectors are 42lb. I believe, I bought the H/I from SDPP and I believe that's what they come with when you purchase the complete intake.
My tuner does a lot of cars here locally and elsewhere with great results, anything from stock ls1's to twin turbo 427 combos including land speed cars etc. Privately and for different shops in the state. It's been my experience that every tuner talks smack about the next tuner's abilities/tunes so I guess in that arena, as a "non tuner" all I can really say is that I feel he is competent. If I recall correctly the car made around 440whp on a DJ. track times are.. bone stock 13.8@102 1.9 60' after the mods 14.0@104 2.0 60' same track 3300' altitude
Thanks a lot for responding guys.
Last edited by DreaD; 10-10-2010 at 07:16 PM.
10-10-2010, 07:18 PM
#342
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At this point I've lost the cam card but the way i see it I just need to get a cam that will work. I need to mill the heads to get back to stock CR and get either a cam spec'd or get a good reliable suggestion.
as it sits, the car is stock with the exception of the l92/l76 H/I, hardened stock length pushrods, 921 springs and stock LS2 headgaskets, 1.75" pacesetter headers and spintech exhaust (no cats). It's also running MAFless on a SD tune. The injectors are 42lb. I believe, I bought the H/I from SDPP and I believe that's what they come with when you purchase the complete intake.
My tuner does a lot of cars here locally and elsewhere with great results, anything from stock ls1's to twin turbo 427 combos including land speed cars etc. Privately and for different shops in the state. It's been my experience that every tuner talks smack about the next tuner's abilities/tunes so I guess in that arena, as a "non tuner" all I can really say is that I feel he is competent.
Thanks guys for responding.
as it sits, the car is stock with the exception of the l92/l76 H/I, hardened stock length pushrods, 921 springs and stock LS2 headgaskets, 1.75" pacesetter headers and spintech exhaust (no cats). It's also running MAFless on a SD tune. The injectors are 42lb. I believe, I bought the H/I from SDPP and I believe that's what they come with when you purchase the complete intake.
My tuner does a lot of cars here locally and elsewhere with great results, anything from stock ls1's to twin turbo 427 combos including land speed cars etc. Privately and for different shops in the state. It's been my experience that every tuner talks smack about the next tuner's abilities/tunes so I guess in that arena, as a "non tuner" all I can really say is that I feel he is competent.
Thanks guys for responding.
Second, we cannot really examine your combo if you do not even know your cam specs........
But going off your comments sounds like you have a cam that has too much overlap with a not optimal tune......
Last edited by bozzhawg; 11-20-2010 at 09:42 PM.
10-10-2010, 09:05 PM
#344
I have had awesome results on a carb'd, but otherwise stock 6.0 LY6 with a comp 227/235 @ .050, .614/.624 114lsa +4.
I have not had it dyno'd but it ran 120mph through the lights with my 3414lb race weight camaro. I'm sure there is a formula to calculate what HP is getting to the ground through my 5 speed.
drivability is great, pulls down to 1200 in 4th gear and can pull out of it.
I have not had it dyno'd but it ran 120mph through the lights with my 3414lb race weight camaro. I'm sure there is a formula to calculate what HP is getting to the ground through my 5 speed.
drivability is great, pulls down to 1200 in 4th gear and can pull out of it.
10-10-2010, 09:33 PM
#345
TECH Enthusiast
I have had awesome results on a carb'd, but otherwise stock 6.0 LY6 with a comp 227/235 @ .050, .614/.624 114lsa +4.
I have not had it dyno'd but it ran 120mph through the lights with my 3414lb race weight camaro. I'm sure there is a formula to calculate what HP is getting to the ground through my 5 speed.
drivability is great, pulls down to 1200 in 4th gear and can pull out of it.
I have not had it dyno'd but it ran 120mph through the lights with my 3414lb race weight camaro. I'm sure there is a formula to calculate what HP is getting to the ground through my 5 speed.
drivability is great, pulls down to 1200 in 4th gear and can pull out of it.
I would not dyno it, man it might bring bad luck...... lol after the dyno it might mess with your shifting or mental like baseball or basketball players who go into a batting or shooting slump......lol You might lose your swagger if the numbers are off....
just kidding.....
but the 120mph is worth more than any dyno to me......
10-10-2010, 09:52 PM
#346
I would not dyno it, man it might bring bad luck...... lol after the dyno it might mess with your shifting or mental like baseball or basketball players who go into a batting or shooting slump......lol You might lose your swagger if the numbers are off....
just kidding..... but the 120mph is worth more than any dyno to me......
just kidding.....
but the 120mph is worth more than any dyno to me......
10-22-2010, 07:18 AM
#347
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OK, I just don't get specing cams, lol... I've read this like 1000 times and still confused... Anyways, I am looking for a used cam, something with a nasty dirty lope and good power.
Here is the cam that I was offered, please let me know if it is a good choice. And before it gets beats down like a dead horse.... I would like a PatG, but I can't afford it right now.
TSP - Texas Giant 248/254, .615"/.622" 114 LSA
Patrick G custom spec LSR lobed 244-255 625-625 115+4
Both Comp Cams:
254/258 622/622 111L/S
242/250 611/619 114ls +4 SS3 cam from Speed Inc
Here's my setup:
CI: 425
Heads: WCCH Stg3 L92
Intake: LS3
LTH: Pacesetters
Trans: M6
Rear: MWC Fab9 w/ 4.11
DM
Here is the cam that I was offered, please let me know if it is a good choice. And before it gets beats down like a dead horse.... I would like a PatG, but I can't afford it right now.
TSP - Texas Giant 248/254, .615"/.622" 114 LSA
Patrick G custom spec LSR lobed 244-255 625-625 115+4
Both Comp Cams:
254/258 622/622 111L/S
242/250 611/619 114ls +4 SS3 cam from Speed Inc
Here's my setup:
CI: 425
Heads: WCCH Stg3 L92
Intake: LS3
LTH: Pacesetters
Trans: M6
Rear: MWC Fab9 w/ 4.11
DM
Last edited by Devils Mentor; 10-22-2010 at 07:25 AM.
10-22-2010, 07:58 AM
#349
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I have no problem DD a dirty cam, lol, I've had some nasty solids in some 350s I build back in the day, hell I needed a vacuum pump for a few, lol...
As for performance, I know that my intake and LTH are not optimal, but would like to get as much out of the above setup as possible. As far as compression, I'm not sure what it will be, but looking for 12:1-/+
Since I am looking for a used cam at this time, I know that I will probably not find the "BEST" cam for my setup, but as I said, it is not really the optimal setup as is; however, I would like to try and find the BEST out of what is offered to me.
Thanks man!
DM
10-22-2010, 08:37 AM
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What about a stock GM cam. It should be cheap enough. They have the one for the 376 crate motor. The TSP giant would work. iI mean any cam could be made to work. The key is the correct cam for the heads and intake combo. I had TSP cams before and they don't make alot of power under peak. The great part about the 92 heads are the power they make under peak. I would save for a custom cam. My FTI cam is a blast to drive on the street, starts easy and idels great. I know some of its do to the tuning ,b ut I'm just a saying. The GM cams would make decent power and give good driveability
The second comp cam listed from speed inc looks like a 92 cam Lower lift more ex. duration and the 114 + 3
The second comp cam listed from speed inc looks like a 92 cam Lower lift more ex. duration and the 114 + 3
10-23-2010, 12:07 AM
#352
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What about a stock GM cam. It should be cheap enough. They have the one for the 376 crate motor. The TSP giant would work. iI mean any cam could be made to work. The key is the correct cam for the heads and intake combo. I had TSP cams before and they don't make alot of power under peak. The great part about the 92 heads are the power they make under peak. I would save for a custom cam. My FTI cam is a blast to drive on the street, starts easy and idels great. I know some of its do to the tuning ,b ut I'm just a saying. The GM cams would make decent power and give good driveability
The second comp cam listed from speed inc looks like a 92 cam Lower lift more ex. duration and the 114 + 3
The second comp cam listed from speed inc looks like a 92 cam Lower lift more ex. duration and the 114 + 3
As for saving for a custom, I want to do a Carb, style intake with TB setup to maximize my engines potential so it is a little more than just saving up for a cam
I have not seen anything on a GM cam; are you meaning to say a GM as in OEM cam, or is GM a brand like TSP? Sorry if it is a stupid question, but as I said, I have not seen anyone talk about a GM cam with the use of the L92s.
So what are you saying about the 2nd Comp Cam? Is it a good choice over the others?
Thanks man!
DM
It produced 530hp/480tq... NICE! What heads, CR, LT? I just can't get a handle on cam specs for some reason, lol, what do you mean tighter LSA?
I love the ruff idle, but I want it to perform too
DM
Last edited by Devils Mentor; 10-23-2010 at 12:15 AM.
10-23-2010, 05:38 AM
#354
lol, what is a Justin Timberlake cam, or are you joking with the name, lol..?
It produced 530hp/480tq... NICE! What heads, CR, LT? I just can't get a handle on cam specs for some reason, lol, what do you mean tighter LSA?
I love the ruff idle, but I want it to perform too
DM
It produced 530hp/480tq... NICE! What heads, CR, LT? I just can't get a handle on cam specs for some reason, lol, what do you mean tighter LSA?
I love the ruff idle, but I want it to perform too
DM
11-18-2010, 11:06 AM
#355
cam splits After reading the forums it is quite intriguing in regards to cam specs.
I have an ls2 with l92 heads with headwork and 12:1 compression.
I am fitting a lingenfelter gt1-1 cam 229/242 .631 .631 114.5LSA which is actually happening now and will be ready next week.
This camshaft only has 6.6 degrees of overlap calculated at 0.50
so is not much more than your average camshaft.
I know a 230/236 114LSA camshaft works very well with the square port shape but after looking at 3 dyno curves of ls3's with headwork and that cam spec, (as its quite popular down here) the peak torque drops off very early at about 4800rpm.
There was recently another car down here with an ls3 also that had that lingenfelter gt1-1 camshaft along with the headwork
The torque curve was very interesting.
from the low end to the lower midrange it made slightly less hp and torque of about 8hp compared to the 230/236 but from about 3200rpm it caught up made more torque and the torque and power kept increasing till the redline with peak power at about 6660rpm.
230/236 .629 .641 114LSA 494rwhp 520 lb/ft torque @4850rpm
229/242 .631 .631 114.5LSA 511rwhp 541 lb/ft torque @6600
(please note those figures are on the dyno here in Australia and i converted it lb/ft)
The reason this cam worked so well is because it requires the headwork to function properly I believe.
This cam with stock heads I bet would not work well.
All of john lingenfelters cams have wide splits and are all proven to work extremely well but i believe, the headwork is a must for those cams to work properly.
I would be lucky to get about 460-470rwhp in mine due to running a 3200rpm high stall converter.
I would appreciate anyone's thought or opinions.
Thanks
I have an ls2 with l92 heads with headwork and 12:1 compression.
I am fitting a lingenfelter gt1-1 cam 229/242 .631 .631 114.5LSA which is actually happening now and will be ready next week.
This camshaft only has 6.6 degrees of overlap calculated at 0.50
so is not much more than your average camshaft.
I know a 230/236 114LSA camshaft works very well with the square port shape but after looking at 3 dyno curves of ls3's with headwork and that cam spec, (as its quite popular down here) the peak torque drops off very early at about 4800rpm.
There was recently another car down here with an ls3 also that had that lingenfelter gt1-1 camshaft along with the headwork
The torque curve was very interesting.
from the low end to the lower midrange it made slightly less hp and torque of about 8hp compared to the 230/236 but from about 3200rpm it caught up made more torque and the torque and power kept increasing till the redline with peak power at about 6660rpm.
230/236 .629 .641 114LSA 494rwhp 520 lb/ft torque @4850rpm
229/242 .631 .631 114.5LSA 511rwhp 541 lb/ft torque @6600
(please note those figures are on the dyno here in Australia and i converted it lb/ft)
The reason this cam worked so well is because it requires the headwork to function properly I believe.
This cam with stock heads I bet would not work well.
All of john lingenfelters cams have wide splits and are all proven to work extremely well but i believe, the headwork is a must for those cams to work properly.
I would be lucky to get about 460-470rwhp in mine due to running a 3200rpm high stall converter.
I would appreciate anyone's thought or opinions.
Thanks
11-19-2010, 02:01 PM
#357
I have had awesome results on a carb'd, but otherwise stock 6.0 LY6 with a comp 227/235 @ .050, .614/.624 114lsa +4.
I have not had it dyno'd but it ran 120mph through the lights with my 3414lb race weight camaro. I'm sure there is a formula to calculate what HP is getting to the ground through my 5 speed.
drivability is great, pulls down to 1200 in 4th gear and can pull out of it.
I have not had it dyno'd but it ran 120mph through the lights with my 3414lb race weight camaro. I'm sure there is a formula to calculate what HP is getting to the ground through my 5 speed.
drivability is great, pulls down to 1200 in 4th gear and can pull out of it.
11-19-2010, 02:38 PM
#358
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12-11-2010, 11:17 AM
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OMG my head is spinning.. I'm understanding about half of this and I'm inclined to leave this to someone that has actual real world experience.
I've been dealing with poor power, poor track times and poor fuel economy since installing L92/L76 (unmilled/unported) on my stock LS2 GTO. Terrible surging, exhaust smell etc. after at least half a dozen retunes from a competent/proven tuner. All this info is leading me to believe that the unmilled heads combined with an off the shelf 224/228 TR cam is whats creating all my misery. I've never had much luck getting advice on this board with exception of "do a search" as if I haven't spent hours and hours searching. Can someone lead me in the right direction to end my misery?
I've been dealing with poor power, poor track times and poor fuel economy since installing L92/L76 (unmilled/unported) on my stock LS2 GTO. Terrible surging, exhaust smell etc. after at least half a dozen retunes from a competent/proven tuner. All this info is leading me to believe that the unmilled heads combined with an off the shelf 224/228 TR cam is whats creating all my misery. I've never had much luck getting advice on this board with exception of "do a search" as if I haven't spent hours and hours searching. Can someone lead me in the right direction to end my misery?
At a guess if it's surging It's not tuned very well and the problem lies with your tuner. Sounds a bit harsh I know but really there isn't anything wrong with that cam.
cheers
12-22-2010, 01:27 PM
#360
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The more I reread this to trying and get a grasp of cams, the less I seem to understand and the more questions I have, lol...
So what is the general consensus on a cam for a 400+C.I. engine with a Vic Jr/4150 setup and shift @ 7500.
I personally like my **** sounding off like a top fuel dragster at idel, lol, so as long as I don't have to run a vacuum canister/pump I'll be good, lol
What would be a good example of the kind of cam specs I would be looking for?
DM
So what is the general consensus on a cam for a 400+C.I. engine with a Vic Jr/4150 setup and shift @ 7500.
I personally like my **** sounding off like a top fuel dragster at idel, lol, so as long as I don't have to run a vacuum canister/pump I'll be good, lol
What would be a good example of the kind of cam specs I would be looking for?
DM