New Much Bigger Cam and Lose 30 RWHP WTF????
08-26-2005, 07:22 PM
#82
Originally Posted by 1CAMWNDR
Isn't a 242/248 cam to damn big for a 346" motor 
? Maybe bigger isn't better in this case. Perhaps with the reworked heads and that much cam your intake charge velocity went into the toilet.
If you think you can make this cam work, you might want to try some bigger injectors for a better margin of error.
? Maybe bigger isn't better in this case. Perhaps with the reworked heads and that much cam your intake charge velocity went into the toilet.If you think you can make this cam work, you might want to try some bigger injectors for a better margin of error.
its all about right combination
08-26-2005, 08:24 PM
#83
Originally Posted by eamador11
I agree, you dont need big cams with the LS1 to make power. Tony mamo @afr made 470rwhp with the cam you used to have...
its all about right combination
its all about right combination
__________________
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.
10-20-2005, 10:37 PM
#90
I have to agree with an earlier comment in this thread. The idea behind a larger cam is the overlap, when your spinning to higher RPMs the increased overlap is supposed to pull more air into the combustion chamber and effectively make it larger. If you have a pretty restricitive exhaust than your basically cutting out the overlap and with lower vacuum you can easily see you'd make less hp. Just .02
10-21-2005, 12:21 AM
#91
If they havent removed the cats the problem hasnt been found yet 
We did some testing about a year before the TRex came out... cam only car (very similair to the Trex bit smaller though) made 395 thru the cats. Pulled the cats off thru y pipe and cutout made 420. Tight lsa and overlap with restrictive exhaust doesnt work
We did some testing about a year before the TRex came out... cam only car (very similair to the Trex bit smaller though) made 395 thru the cats. Pulled the cats off thru y pipe and cutout made 420. Tight lsa and overlap with restrictive exhaust doesnt work
10-21-2005, 03:30 PM
#94
that cam is way way too big for a 346, for that cam do make decent power on a 346 you need atleast 13:1 static compression high flow heads and exhaust and spin araound 7500rpm. which is not impossible but i would not do it because you still would lose alot of low end torque and power, if i were you i would put back the old cam and up my compression to 11.9:1.
just my opinion
just my opinion
10-21-2005, 06:54 PM
#95
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Originally Posted by vtanju
that cam is way way too big for a 346, for that cam do make decent power on a 346 you need atleast 13:1 static compression high flow heads and exhaust and spin araound 7500rpm. which is not impossible but i would not do it because you still would lose alot of low end torque and power, if i were you i would put back the old cam and up my compression to 11.9:1.
just my opinion
just my opinion
I was in a similar situation when my T-ReX only made 380 RWHP. I took the cats off and got a better Y-Pipe and I hit 405 RWHP. Althought it's still a bit lower than I would like, removing the cats certainly freed up a considerable amount of power.
Good luck!
Josh
