Thanks Ryne.
Who can spec the "RIGHT" cam for this???
Who can spec the "RIGHT" cam for this??? Ok guys, here goes. Ive talked to 3 people and gave them the exact same specs and Got three wayyyy differnt cam specs. Here are the specs and what i intend to do..
Iron block 4.030 bore
Eagle 4.00 crank
Bme aluminum 6.100 rods
Wiesco K464f3 L92 "-3cc small dome"
comp. is going to be 11.3:1
Ported L92 heads milled .020
GMPP carb intake
950 HP carb
1 7/8 long tubes
Powerglide
9.5' conv. stalls close to 4000
4.10 gear
275 drag radial
3300# race #
This will be an N2O motor with "2" .053 jets. It is for a heads up radial tire class. I am not concerned with street manners. I just need a all out cam, ET. is my only goal. The only thing i want to do is stay at .625 lift or less. All i have left to buy for this motor is cam and valvetrain. What do you guys think? stay with the small dur. or get wild with it, One company told me a 260 /268@ 50 with a 114ls. I just think that is to much for the l92 heads. Is there anyone running a combo close to this that is making power? if so let me know. Thanks, Heath...
Iron block 4.030 bore
Eagle 4.00 crank
Bme aluminum 6.100 rods
Wiesco K464f3 L92 "-3cc small dome"
comp. is going to be 11.3:1
Ported L92 heads milled .020
GMPP carb intake
950 HP carb
1 7/8 long tubes
Powerglide
9.5' conv. stalls close to 4000
4.10 gear
275 drag radial
3300# race #
This will be an N2O motor with "2" .053 jets. It is for a heads up radial tire class. I am not concerned with street manners. I just need a all out cam, ET. is my only goal. The only thing i want to do is stay at .625 lift or less. All i have left to buy for this motor is cam and valvetrain. What do you guys think? stay with the small dur. or get wild with it, One company told me a 260 /268@ 50 with a 114ls. I just think that is to much for the l92 heads. Is there anyone running a combo close to this that is making power? if so let me know. Thanks, Heath...
If you keep it mild, it'll be a dog.
With that intake, and those heads, on a smaller motor, you need to wing that thing to make any power.
Solid roller 625/625 248/254 on a 112+2. That would get you close.
And spin the **** out of it.
If you really wanted to make some power, up the compression, and run more cam.
This is a totally different set up than a L76 intake, and shouldnt be treated or cammed like one.
If you want a mild cammed, street freindly set up, ditch the intake and carb and go EFI with a L76. Otherwise, with what you got, cammin it like one wont do anything but make it a dog.
With that intake, and those heads, on a smaller motor, you need to wing that thing to make any power.
Solid roller 625/625 248/254 on a 112+2. That would get you close.
And spin the **** out of it.
If you really wanted to make some power, up the compression, and run more cam.
This is a totally different set up than a L76 intake, and shouldnt be treated or cammed like one.
If you want a mild cammed, street freindly set up, ditch the intake and carb and go EFI with a L76. Otherwise, with what you got, cammin it like one wont do anything but make it a dog.
If you keep it mild, it'll be a dog.
With that intake, and those heads, on a smaller motor, you need to wing that thing to make any power.
Solid roller 625/625 248/254 on a 112+2. That would get you close.
And spin the **** out of it.
If you really wanted to make some power, up the compression, and run more cam.
This is a totally different set up than a L76 intake, and shouldnt be treated or cammed like one.
If you want a mild cammed, street freindly set up, ditch the intake and carb and go EFI with a L76. Otherwise, with what you got, cammin it like one wont do anything but make it a dog.
With that intake, and those heads, on a smaller motor, you need to wing that thing to make any power.
Solid roller 625/625 248/254 on a 112+2. That would get you close.
And spin the **** out of it.
If you really wanted to make some power, up the compression, and run more cam.
This is a totally different set up than a L76 intake, and shouldnt be treated or cammed like one.
If you want a mild cammed, street freindly set up, ditch the intake and carb and go EFI with a L76. Otherwise, with what you got, cammin it like one wont do anything but make it a dog.
The reason I said it gets ugly is that there are a lot of people who think they know what's best and just start spitting out cam specs. When, in truth, every engine is different and every combo needs something suited to it.
The best thing anyone building an engine can do is call an engine designer and get a custom grind for their setup. My custom grind only cost about $30 more than an off the shelf cam. Call Crane, Comp, Isky, Lunati or any good builder. I've heard Patrick G knows what he's doing. I've also heard some good things about Speedinc's custom grinds.
The best thing anyone building an engine can do is call an engine designer and get a custom grind for their setup. My custom grind only cost about $30 more than an off the shelf cam. Call Crane, Comp, Isky, Lunati or any good builder. I've heard Patrick G knows what he's doing. I've also heard some good things about Speedinc's custom grinds.
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If you keep it mild, it'll be a dog.
With that intake, and those heads, on a smaller motor, you need to wing that thing to make any power.
Solid roller 625/625 248/254 on a 112+2. That would get you close.
And spin the **** out of it.
If you really wanted to make some power, up the compression, and run more cam.
This is a totally different set up than a L76 intake, and shouldnt be treated or cammed like one.
If you want a mild cammed, street freindly set up, ditch the intake and carb and go EFI with a L76. Otherwise, with what you got, cammin it like one wont do anything but make it a dog.
With that intake, and those heads, on a smaller motor, you need to wing that thing to make any power.
Solid roller 625/625 248/254 on a 112+2. That would get you close.
And spin the **** out of it.
If you really wanted to make some power, up the compression, and run more cam.
This is a totally different set up than a L76 intake, and shouldnt be treated or cammed like one.
If you want a mild cammed, street freindly set up, ditch the intake and carb and go EFI with a L76. Otherwise, with what you got, cammin it like one wont do anything but make it a dog.
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Here's my combo and cam specs. It made 743.8 hp and 634 tq at the flywheel NA at 6700. It is also built for N2O but I haven't got the car all the way together and have no nitrous system for it yet. Hopefully this will give you an idea of what you'll need to reach your goals. I just don't know how much help it'll be with us running different heads.
My guess, however, is 1 7/8 headers aren't going to give you quite enough flow for your goals on N2O. And, it looks like you're shooting a little high on the CFM for the carb. At 6900 mine was only drawing 827 CFM. Yours will be less at the same RPM due to you having less cubes.
LSX 441ci 11:1 cr
6.125" Lunati Pro Billet Rods
4.125" Compstar Callies crank
4.125" custom Wiseco pistons for nitrous
Meziere street version w/p
LS7 heads ported and polished with Del West Ti intake and sodium filled exhaust valves
LS7 carb intake
950 Quick Fuel Technologies carb modified for E85
MSD coils and wires
Harland Sharp custom made roller tip rockers (still 1.8:1)
Melling high pressure and high volume oil pump
Kook's 2" primary headers w/LS7 flange and 3 1/2 collectors
MSD ingnition controller for LS2
Cloyes double roller timing set
Custom Comp Cam: (Everything is based on 1.7:1 rockers, I have 1.8:1)
Gross valve lift Intake .623 Exhaust .623
Duration Intake 254 Exhaust 266
112 Intake center line
114 lobe separation
Here's a link to the dyno sheet: https://ls1tech.com/forums/attachmen...2&d=1215064534
My guess, however, is 1 7/8 headers aren't going to give you quite enough flow for your goals on N2O. And, it looks like you're shooting a little high on the CFM for the carb. At 6900 mine was only drawing 827 CFM. Yours will be less at the same RPM due to you having less cubes.
LSX 441ci 11:1 cr
6.125" Lunati Pro Billet Rods
4.125" Compstar Callies crank
4.125" custom Wiseco pistons for nitrous
Meziere street version w/p
LS7 heads ported and polished with Del West Ti intake and sodium filled exhaust valves
LS7 carb intake
950 Quick Fuel Technologies carb modified for E85
MSD coils and wires
Harland Sharp custom made roller tip rockers (still 1.8:1)
Melling high pressure and high volume oil pump
Kook's 2" primary headers w/LS7 flange and 3 1/2 collectors
MSD ingnition controller for LS2
Cloyes double roller timing set
Custom Comp Cam: (Everything is based on 1.7:1 rockers, I have 1.8:1)
Gross valve lift Intake .623 Exhaust .623
Duration Intake 254 Exhaust 266
112 Intake center line
114 lobe separation
Here's a link to the dyno sheet: https://ls1tech.com/forums/attachmen...2&d=1215064534
Last edited by toneloc60; Aug 18, 2008 at 02:04 PM.
Here's my combo and cam specs. It made 743.8 hp and 634 tq at the flywheel NA at 6700. It is also built for N2O but I haven't got the car all the way together and have no nitrous system for it yet. Hopefully this will give you an idea of what you'll need to reach your goals. I just don't know how much help it'll be with us running different heads.
My guess, however, is 1 7/8 headers aren't going to give you quite enough flow for your goals on N2O. And, it looks like you're shooting a little high on the CFM for the carb. At 6900 mine was only drawing 827 CFM. Yours will be less at the same RPM due to you having less cubes.
LSX 441ci 11:1 cr
6.125" Lunati Pro Billet Rods
4.125" Compstar Callies crank
4.125" custom Wiseco pistons for nitrous
Meziere street version w/p
LS7 heads ported and polished with Del West Ti intake and sodium filled exhaust valves
LS7 carb intake
950 Quick Fuel Technologies carb modified for E85
MSD coils and wires
Harland Sharp custom made roller tip rockers (still 1.8:1)
Melling high pressure and high volume oil pump
Kook's 2" primary headers w/LS7 flange and 3 1/2 collectors
MSD ingnition controller for LS2
Cloyes double roller timing set
Custom Comp Cam: (Everything is based on 1.7:1 rockers, I have 1.8:1)
Gross valve lift Intake .623 Exhaust .623
Duration Intake 254 Exhaust 266
112 Intake center line
114 lobe separation
Here's a link to the dyno sheet: https://ls1tech.com/forums/attachmen...2&d=1215064534
My guess, however, is 1 7/8 headers aren't going to give you quite enough flow for your goals on N2O. And, it looks like you're shooting a little high on the CFM for the carb. At 6900 mine was only drawing 827 CFM. Yours will be less at the same RPM due to you having less cubes.
LSX 441ci 11:1 cr
6.125" Lunati Pro Billet Rods
4.125" Compstar Callies crank
4.125" custom Wiseco pistons for nitrous
Meziere street version w/p
LS7 heads ported and polished with Del West Ti intake and sodium filled exhaust valves
LS7 carb intake
950 Quick Fuel Technologies carb modified for E85
MSD coils and wires
Harland Sharp custom made roller tip rockers (still 1.8:1)
Melling high pressure and high volume oil pump
Kook's 2" primary headers w/LS7 flange and 3 1/2 collectors
MSD ingnition controller for LS2
Cloyes double roller timing set
Custom Comp Cam: (Everything is based on 1.7:1 rockers, I have 1.8:1)
Gross valve lift Intake .623 Exhaust .623
Duration Intake 254 Exhaust 266
112 Intake center line
114 lobe separation
Here's a link to the dyno sheet: https://ls1tech.com/forums/attachmen...2&d=1215064534
The 950 is going to be a lil much but i already have it and a 750. I will probly get another carb after i get it up and going may even crank it on the 750. I am also runnin a 6010 that i forgot to mention. Who did your cam? Sounds like they did a good job..
I am a consultant for Thunder Racing. If you'd like me to spec you a custom cam, just click the cam help link in my signature and follow the instructions.
__________________
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
That is a very stout combo
The 950 is going to be a lil much but i already have it and a 750. I will probly get another carb after i get it up and going may even crank it on the 750. I am also runnin a 6010 that i forgot to mention. Who did your cam? Sounds like they did a good job..
The 950 is going to be a lil much but i already have it and a 750. I will probly get another carb after i get it up and going may even crank it on the 750. I am also runnin a 6010 that i forgot to mention. Who did your cam? Sounds like they did a good job..
I dont work for comp or thunder but did work for west tech and tested about 800+ engines in the last 3 years. I am tesing on my own now and have been getting deep on the l92 stuff with 4 cars going now. tuning has been a nightmare as I am not a great tuner.
I would try something like this 240/252 on a 112 installed on a 108ic
when you are done paying to get some other recomendations lets see how close I am ?
I KNOW OF 3 CARS RUNNING THIS CAM 246/260 111LS WITH 416 AND RUNNING HIGH NINES NA AT 3200LBS AND 4.11 GEARS ?
I would try something like this 240/252 on a 112 installed on a 108ic
when you are done paying to get some other recomendations lets see how close I am ?
I KNOW OF 3 CARS RUNNING THIS CAM 246/260 111LS WITH 416 AND RUNNING HIGH NINES NA AT 3200LBS AND 4.11 GEARS ?
How many of the L92 cams have you done that are not for a dd. What kind if results and numbers have they produced?
