Cam only Tq. How many have broke 400?
03-09-2010 | 02:52 PM
#1
Thread Starter
Joined: Nov 2005
Posts: 5,556
Likes: 6
From: Rochester, NY
Cam only Tq. How many have broke 400? I see some really low 370's, and a lot of mid 380s. And a lot of really good 388-395tq with guys making 415-420whp good sized cams on stock heads with bolt-on.
But not many breaking 400wtq, how many have do it? And whats setuo did you have.
Edit- cam only , I should have said stock stroke, and cube 346 LS1 with stock LS1 heads, 853/241s no porting VJ or milling.
LS2 and a 243 headed LS1/6 you can do it easy
Trex v.2
2001 C5, stock 346 LS1
Street Sweeper cam package 236/240 .630/.612
American Racing 1 7/8" headers
New Era ported throttle body/ LS6 intake
Tuned by Mike@newera
426RwHP 387wTQ
https://ls1tech.com/forums/attachmen...ad-ss-dyno.jpg
Custom from NewEra 239/243 .650,.650
Fast 92/92 85MAF SLP lid
ARH 1 7/8th. 25% UD powerpound
D60 4:56 gears. RXTtwin, steel DS, t56
I improved the 441/393, to 450/407 switching out the 2OTL catback to strait thu mufflers and turn downs beofre the rear end
https://ls1tech.com/forums/dynamomet...nly-setup.html
But not many breaking 400wtq, how many have do it? And whats setuo did you have.
Edit- cam only , I should have said stock stroke, and cube 346 LS1 with stock LS1 heads, 853/241s no porting VJ or milling.
LS2 and a 243 headed LS1/6 you can do it easy
Trex v.2
1999 Z28, M6, 126k at time of cam swap in 2007, currently 129k.
Patrick G spec'd Comp cam 231/231 .612/.604 111 +4
Untouched stock heads
Nick Williams tune
ported stock throttle body
LS6 intake
Fluidampr 10% underdrive pulley
Comp Cams Adjustable Timing Chain
PRC Double Valvesprings & Titanium retainers
Mac midlengths with custom y-pipe and Flowmaster merge
E-cutout
Hooker catback
Six Speeds Inc Stage 4 T56
Denny's Nitrous Ready driveshaft
Textralia Exoskel clutch
Moser axles
Stock 3.42s for now, 3.73s already in spare rear waiting on a free weekend to install.
394rwhp/389rwtq
Fairly rough idle, has a little surge when cold, but otherwise drives just like a stock cam. Previous owner swapped cams, and so far in the 9 months I've owned it I've been VERY pleased. I could DD this car no problem, especially with a less aggressive clutch. I think it has alot to do with the tune, it idles at 900rpm dead on without any hunting.
Patrick G spec'd Comp cam 231/231 .612/.604 111 +4
Untouched stock heads
Nick Williams tune
ported stock throttle body
LS6 intake
Fluidampr 10% underdrive pulley
Comp Cams Adjustable Timing Chain
PRC Double Valvesprings & Titanium retainers
Mac midlengths with custom y-pipe and Flowmaster merge
E-cutout
Hooker catback
Six Speeds Inc Stage 4 T56
Denny's Nitrous Ready driveshaft
Textralia Exoskel clutch
Moser axles
Stock 3.42s for now, 3.73s already in spare rear waiting on a free weekend to install.
394rwhp/389rwtq
Fairly rough idle, has a little surge when cold, but otherwise drives just like a stock cam. Previous owner swapped cams, and so far in the 9 months I've owned it I've been VERY pleased. I could DD this car no problem, especially with a less aggressive clutch. I think it has alot to do with the tune, it idles at 900rpm dead on without any hunting.
Took my cam only m6 SS to Larry and the guys at Speed Inc today for a little touch up on my tune. Previously the car made 402rwhp/374rwtq and today it made 417rwhp/390rwtq! Changes this time around were wheels and tires were a 85mm maf, 98mm lid, chris1313 r/a, open y-pipe, and 4:30 gears (Previous gears were 3:89s). She's no dyno queen but I'm very pleased with the outcome and can't wait to get her to the track. 
Big thanks to Larry and Jim at Speed Inc!!!
Btw here's a quick run down on the car.
2000 m6 SS
SI5 cam 231/237 .589/.595 112lsa)
1-3/4" LTs w/4" mufflex cb (open y-pipe on dyno)
Untouched FAST 92
85mm maf
98mm lid
udp
Moser 9" w/4:30s
Big thanks to Larry and Jim at Speed Inc!!!Btw here's a quick run down on the car.
2000 m6 SS
SI5 cam 231/237 .589/.595 112lsa)
1-3/4" LTs w/4" mufflex cb (open y-pipe on dyno)
Untouched FAST 92
85mm maf
98mm lid
udp
Moser 9" w/4:30s
2001 C5, stock 346 LS1
Street Sweeper cam package 236/240 .630/.612
American Racing 1 7/8" headers
New Era ported throttle body/ LS6 intake
Tuned by Mike@newera
426RwHP 387wTQ
https://ls1tech.com/forums/attachmen...ad-ss-dyno.jpg
https://ls1tech.com/forums/dynamomet...o-numbers.html
Not sure the specs but found this posted, also found .610/.615 posted
"244/250 Custom Grind" "Comp X-ER"
"Lift is around 620/625 110 LSA"
Peak TQ was 400. The TQ curve is flat from 5,000 to 6,000
with and without vacuum pump
Not sure the specs but found this posted, also found .610/.615 posted
"244/250 Custom Grind" "Comp X-ER"
"Lift is around 620/625 110 LSA"
Peak TQ was 400. The TQ curve is flat from 5,000 to 6,000
with and without vacuum pump
Custom from NewEra 239/243 .650,.650
Fast 92/92 85MAF SLP lid
ARH 1 7/8th. 25% UD powerpound
D60 4:56 gears. RXTtwin, steel DS, t56
I improved the 441/393, to 450/407 switching out the 2OTL catback to strait thu mufflers and turn downs beofre the rear end
https://ls1tech.com/forums/dynamomet...nly-setup.html
Last edited by studderin; 03-15-2012 at 07:49 AM.
03-09-2010 | 03:18 PM
#2
nice thread posting to subscribe. I have 383 rwtq but that was stock ls1 intake/tb so hoping with the fast 92/92 it might improve that number to get me close. Going to 1 7/8's and no y-pipe isn't gonna help though 
haha.
haha.
03-09-2010 | 07:35 PM
#3
Some lucky motors get high but most of the one's doing 395+ are either uncorrected dynojet #'s on cold days or Dynojets on the STD correction factor.346ci is just missing cubes.
03-09-2010 | 07:58 PM
#5
Pushin 396tq at the rear here, stock 243 ls6 heads with the "El Torro" cam and bolt ons, currently being retuned, my goal was 420/400, I came in at 418/396, but I think after the the new tune is done, I expect my numbers to rise and the TQ to come in sooner too.
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03-09-2010 | 10:09 PM
#13
TECH Senior Member
iTrader: (3)
Joined: Apr 2006
Posts: 6,524
Likes: 1
From: Western Burbs of Detroit
400/380 g5x3 cam, FAST 78, ported 78mm tb, 1 3/4 lg pros. (OLD SETUP 2005)
If the stock heads were milled it would've been better. That cam likes compression, 10.5 to 1 or a touch less since they flycutt my pistons for safety, just didn't let her shine as bright as I would've liked her too back in the day.
If the stock heads were milled it would've been better. That cam likes compression, 10.5 to 1 or a touch less since they flycutt my pistons for safety, just didn't let her shine as bright as I would've liked her too back in the day.
03-09-2010 | 10:44 PM
#14
TECH Enthusiast
iTrader: (1)
Joined: Dec 2005
Posts: 549
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From: Denver International Airport, Colorado USA
Its hard to imagine 400 TQ on stock heads and cam only. Not impossible, but how you can build that kind of cylinder pressure without additional CR or overlap...
Maybe overlap would be the trick, but it seems to pushing the physics of a 346 engine to get that kind of torque cam only.
Maybe overlap would be the trick, but it seems to pushing the physics of a 346 engine to get that kind of torque cam only.
03-10-2010 | 02:29 AM
#15
Thread Starter
Joined: Nov 2005
Posts: 5,556
Likes: 6
From: Rochester, NY
Ya, the cold days. Even not very cold last few days, but nice for winter. I turn the heat off and open the doors for after hours testing get some .9x SAE, the uncorrect numbers look really good hahaha
I'm tesing some diffrent cams, and broke 400 it a few times now. But noticed some things. It sure isn't the "tq" , power under the curve" style cam, people think they have.
My setup is not that dyno happy. But the spool numbers were up about 10 then when it had a truetrac (really heavy in a s60) with the same mods last time in the fall I was testing intakes. The 4:30 gears, steel DS, ram billet steel flywheel, Big 28 DR (that are bald now, so many dyno pulls killed the last tread on them, lol) No cutout- SLP 2OTL catback, belt on/paper filter in Lid closed. No tricks I know how to "find" power.
this was for myself so same way I drive the car.Post up some more info if you have. stock LS1 heads, no LS2/LS6 motors, and no 4inch stroke guys
SAE pref, and dyno info (I know most guys don't get all that)More info then just "224/230" cam?...... full specs with LSA and any advance, and installed postion.
what headers and sizes and specs on collectors, and lenghts if you know them, and exhust system,
what bolt ons, what intake, from how you get air, to it getting the heads, whats your driveline going to the back tires.
03-10-2010 | 04:18 PM
#17
If you look around a lot of the older Trex cam only cars were over 400 rwtq. Here is a recent cam only trex m6 with fast 90, 9" and 4.30 gears. Car ran 11.6 or so with a 1.9 60' @ 124 mph.
https://ls1tech.com/forums/12636648-post50.html
https://ls1tech.com/forums/12636648-post50.html
03-10-2010 | 05:21 PM
#18
On The Tree
Joined: Apr 2005
Posts: 185
Likes: 1
From: Texas
im making 443/405 torque cam only t-rex...
9 inch with 4:30 gears 11 inch wide zr1 with dr's
twin disc mcleoud
american racing headers with cut out
fast 92 85 ftp lid 4 inch silicone
udp
ahh see my dyno graph above
9 inch with 4:30 gears 11 inch wide zr1 with dr's
twin disc mcleoud
american racing headers with cut out
fast 92 85 ftp lid 4 inch silicone
udp
ahh see my dyno graph above
03-10-2010 | 08:52 PM
#19
Close to my dyno numbers. Work on that 60foot... and your shifting with that power your car will mph more and run a 28 tall tall with the 4:30 gear.