Trex Torque?
07-13-2006, 07:27 AM
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Trex Torque? Whats your numbers with one in a 6 speed with 4.10's or lower gearing.
I drove a car last night with this combo, some stepped headers and he told me he only made 385 peak torque. But made 440 something HP. I did some exhaust work with just some mufflers right off the headers and drove it to check for banging issues. Sounded good and was strong to the Butt meter but it didnt make any torque on the dyno numbers. I thought a cam with the HP it made would have some better valve events to make some more torque across the band. Then again maybe thats why it needs 4.56 gears and it only has a short power band..
Discuss.
I drove a car last night with this combo, some stepped headers and he told me he only made 385 peak torque. But made 440 something HP. I did some exhaust work with just some mufflers right off the headers and drove it to check for banging issues. Sounded good and was strong to the Butt meter but it didnt make any torque on the dyno numbers. I thought a cam with the HP it made would have some better valve events to make some more torque across the band. Then again maybe thats why it needs 4.56 gears and it only has a short power band..
Discuss.
07-13-2006, 07:38 AM
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Originally Posted by 1936FordPU
Whats your numbers with one in a 6 speed with 4.10's or lower gearing.
I drove a car last night with this combo, some stepped headers and he told me he only made 385 peak torque. But made 440 something HP. I did some exhaust work with just some mufflers right off the headers and drove it to check for banging issues. Sounded good and was strong to the Butt meter but it didnt make any torque on the dyno numbers. I thought a cam with the HP it made would have some better valve events to make some more torque across the band. Then again maybe thats why it needs 4.56 gears and it only has a short power band..
Discuss.
I drove a car last night with this combo, some stepped headers and he told me he only made 385 peak torque. But made 440 something HP. I did some exhaust work with just some mufflers right off the headers and drove it to check for banging issues. Sounded good and was strong to the Butt meter but it didnt make any torque on the dyno numbers. I thought a cam with the HP it made would have some better valve events to make some more torque across the band. Then again maybe thats why it needs 4.56 gears and it only has a short power band..
Discuss.
07-13-2006, 11:56 AM
#3
I think around 380 to 400rwtq is going to be a ballpark figure for a cam that size with no head work. Hell, Thunders very own dyno only showed 406tq with 450+hp. If he had his heads milled down he could bump up the compression or he could run an aftermarket cast head like AFR or DART and mill them down. Either way, he'll have to flycut but I think he could get 420+rwtq that way, esp. if the AFR or Darts were with a 205 intake runner. I'm sure some others with more knowledge on this will chime in as well.
07-13-2006, 12:08 PM
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Originally Posted by SVT THIS
I think around 380 to 400rwtq is going to be a ballpark figure for a cam that size with no head work. Hell, Thunders very own dyno only showed 406tq with 450+hp. If he had his heads milled down he could bump up the compression or he could run an aftermarket cast head like AFR or DART and mill them down. Either way, he'll have to flycut but I think he could get 420+rwtq that way, esp. if the AFR or Darts were with a 205 intake runner. I'm sure some others with more knowledge on this will chime in as well.
07-13-2006, 01:19 PM
#5
The T-Rex has a little too late of an intake valve closing point to make maximum area under the curve. The 109-110LSA certainly helps, but with an IVC of around 49 degrees ABDC at .050", it's a little late to work in harmony with the tuned runner length of the LS6 or FAST intake. An IVC between 44-46 degrees seems to be closer to ideal when working with these intakes. FWIW, a G5X-3 on a 112 has an IVC of 45 degrees ABDC at .050"...a little closer to ideal.
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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
2018 Cadillac Escalade 6.2L A10 Pat G tuned.
LS1,LS2,LS3,LS7,LT1 Custom Camshaft Specialist For custom camshaft help press here.
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
2018 Cadillac Escalade 6.2L A10 Pat G tuned.
LS1,LS2,LS3,LS7,LT1 Custom Camshaft Specialist For custom camshaft help press here.
Custom LSX tuning in person or via email press here.
