swapped cams and added FAST 78
swapped cams and added FAST 78 This top graph is with an MTI X1 cam and stock LS6 intake, the rest of the mods are in my signature. Red graph, ignore the blue one.
Now since that graph I swapped the X1 cam for an FTI Street Sweeper HT and swapped the LS6 intake for a ported FAST 78.
Here's a chart showing gain/loss:
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Now since that graph I swapped the X1 cam for an FTI Street Sweeper HT and swapped the LS6 intake for a ported FAST 78.
Here's a chart showing gain/loss:
[IMG]
[/IMG] Pretty much gained everywhere. The comparison chart is a nice touch. Mid-range gains are nice. Seat of the pants is probably noticable. I'm a little surprised that the forward split cam with the higher flowing intake did not widen the gap further at higher rpm. Guess it goes to show you that the venerable X1 cam is still a strong performer.
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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.
Pretty much gained everywhere. The comparison chart is a nice touch. Mid-range gains are nice. Seat of the pants is probably noticable. I'm a little surprised that the forward split cam with the higher flowing intake did not widen the gap further at higher rpm. Guess it goes to show you that the venerable X1 cam is still a strong performer.
Im actually really surprised. Is the fast ported? I remember tony mamo saying bang for buck the ported fast 78 was the best bet there was. Seems like a strong setup! What are the specs on the two cams? Im really surprised you didnt pick up more, but again good numbers!
I ported the FAST myself, mainly removed the large ridges that stuck out indo the runners and cleaned up the casting marks and then port matched it to the heads.
X1 was 230/228 .592/.571 112+2
FTI cam is 228/232 .598/.598 111+2
I expected more of a gain too, but it does pull hard. I'm doing an RPS clutch that drops 24lbs of rotational weight and I'll probably do an underdrive pulley later too.
X1 was 230/228 .592/.571 112+2
FTI cam is 228/232 .598/.598 111+2
I expected more of a gain too, but it does pull hard. I'm doing an RPS clutch that drops 24lbs of rotational weight and I'll probably do an underdrive pulley later too.
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I ported the FAST myself, mainly removed the large ridges that stuck out indo the runners and cleaned up the casting marks and then port matched it to the heads.
X1 was 230/228 .592/.571 112+2
FTI cam is 228/232 .598/.598 111+2
I expected more of a gain too, but it does pull hard. I'm doing an RPS clutch that drops 24lbs of rotational weight and I'll probably do an underdrive pulley later too.
X1 was 230/228 .592/.571 112+2
FTI cam is 228/232 .598/.598 111+2
I expected more of a gain too, but it does pull hard. I'm doing an RPS clutch that drops 24lbs of rotational weight and I'll probably do an underdrive pulley later too.
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I got the 78 for $400 brand new on Ebay and sold my LS6 for $300. Ported it myself and was only out $100 out of pocket. Tony Mamo says the 78 only gives up 5rwhp to the 90/92 up top. When funding allows I can swap just the top shell and bolt on an LS2 tb.
why the cam swap...seems like alot of work for basically the same cam...did u get the cam for free...
the results you got are about what i would expect...nice gain for $100 unless u had to pay 450 for a tune
the results you got are about what i would expect...nice gain for $100 unless u had to pay 450 for a tune
It would probably be handy if the tuner had told me what the a/f and timing was, he didn't seem to interested in giving a damn about me even being there, sadly enough.
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Nice pick up from a ported 78 mm fast. I too have to agree with the questioning "why did you even bother swapping cams ??" Seems like if you were adding 2 or more degrees of lift and upping the lift a bit more then you did it might have helped you make more power. All you did is reduce intake duration and increase lift slightly, while adding exhaust lift and duration. Seems like she exhales better but the inhale is a push considering you have less duration but more lift. Should've went with more duration on the intake side and picked up another 15 rwhp. Who am I though ?? No expert thats for sure. Nice gain from the intake.
Nice pick up from a ported 78 mm fast. I too have to agree with the questioning "why did you even bother swapping cams ??" Seems like if you were adding 2 or more degrees of lift and upping the lift a bit more then you did it might have helped you make more power. All you did is reduce intake duration and increase lift slightly, while adding exhaust lift and duration. Seems like she exhales better but the inhale is a push considering you have less duration but more lift. Should've went with more duration on the intake side and picked up another 15 rwhp. Who am I though ?? No expert thats for sure. Nice gain from the intake.
I didn't want to go bigger on the cam because it's a street car with the rare trip to the track, I wanted a broad power curve that pulls hard from 3,000-6,800 unlike some of these large cams I see that don't start pulling till 4,500.
viper, i think u should have kept the X1 and put the ported fast setup and seen what kind of gains u had. i plan on adding LS6 heads or 5.3 heads and fast 92/92 combo with my X1 and see what i get. just look at jaSSon's combo.. its a simple setup TEA 5.3/FAST 90/90/ X1 = 10.6 all motor!!