Why power peaked at 5,700 w/FM-13
10-24-2006, 06:21 PM
#1
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Why power peaked at 5,700 w/FM-13 Well I am looking a little more into the reason my car peaked so quick on the dyno.
I was thinking it was because of the LS1 intake starving a bit for air .
Also a few times at the top of the RPM range I get a p0103 MAF high frequncy . I will be changing the MAF tommaorw and the the connection seems good .A few people had mentioned that it may be a tooth off . I am very attenteive when I do this so I am don't think it is off but maybey my eyes weren't working right that day .
Any ideas or is it normal
Mod list is
01 Heads Ti retaners Duel springs hardend rods
FM-13 cam
SLP LT
LS6 ported oil pump
LS2 chain
SLP lid
180 t-stat
Thats it
I was thinking it was because of the LS1 intake starving a bit for air .
Also a few times at the top of the RPM range I get a p0103 MAF high frequncy . I will be changing the MAF tommaorw and the the connection seems good .A few people had mentioned that it may be a tooth off . I am very attenteive when I do this so I am don't think it is off but maybey my eyes weren't working right that day .
Any ideas or is it normal
Mod list is
01 Heads Ti retaners Duel springs hardend rods
FM-13 cam
SLP LT
LS6 ported oil pump
LS2 chain
SLP lid
180 t-stat
Thats it
10-24-2006, 06:49 PM
#2
Cam looks too far advanced. You may want to degree it in.
__________________
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.
10-24-2006, 07:01 PM
#4
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Originally Posted by Patrick G
Cam looks too far advanced. You may want to degree it in.
What makes you say that (just wondering)and also you think it may be off a tooth or do I acutally need to degree the cam .
I also bought the cam used so I don't have a cam card to reference when degreeing it
10-25-2006, 04:27 PM
#7
Low end torque is stronger than normal and the motor runs out of breath well before 6000 rpm...classic signs of an advanced cam or said another way, too early of an intake valve closing point. The cam should be in at 108-110 ICL. Looks more like 104 ICL to me.
__________________
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.
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10-25-2006, 05:39 PM
#8
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Originally Posted by Patrick G
Low end torque is stronger than normal and the motor runs out of breath well before 6000 rpm...classic signs of an advanced cam or said another way, too early of an intake valve closing point. The cam should be in at 108-110 ICL. Looks more like 104 ICL to me.
Thanks man I will look into it
10-26-2006, 06:17 AM
#9
Originally Posted by Patrick G
Low end torque is stronger than normal and the motor runs out of breath well before 6000 rpm...classic signs of an advanced cam or said another way, too early of an intake valve closing point. The cam should be in at 108-110 ICL. Looks more like 104 ICL to me.
Would an F13 clear factory heads if he had accidentally installed it one tooth off???
10-26-2006, 06:34 AM
#10
Originally Posted by SideStep
Would an F13 clear factory heads if he had accidentally installed it one tooth off???
__________________
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.
10-26-2006, 08:37 AM
#11
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Originally Posted by Patrick G
I don't think it's a tooth off. The power looks too good for that, but you never know!
10-26-2006, 09:53 AM
#12
Originally Posted by TOS98SS
Well that would be nice I have a rental to go too in a few weeks then the car will be off the road so I will probably pull the ft cover and check anyway get the ls6 intake and the pulley and retune . That should be good for 400Hp I hope
10-26-2006, 09:54 AM
#13
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Originally Posted by SideStep
The reason I ask is I had a F13 112+4 and it peaked at 6200rpms... Your's is way too soon...
LOL what are you other mods 
