TRex results with stock heads
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TECH Resident
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From: Fremont, CA
TRex results with stock heads Ditched my ASA cam, and went with a TRex. Ditched the SLP longtubes, and got some Dynatech 1 3/4 to 1 7/8's headers, and added some harland sharp rockers. With the other basic bolt ons, pulley, k&n fipk, ls6 intake, ported TB, and true duals... i pulled..
427rwhp/398rwtq... pretty happy with it, but it seems to die after 6700 or so. Will be putting an LSX 90/90 on it shortly, and removing the k&n fipk and putting on a regular lid setup. This is with bone stock heads (they are 01 heads though, but untouched) and an otherwise bone stock engine.
Not quite what Thunder got, but im still happy 
427rwhp/398rwtq... pretty happy with it, but it seems to die after 6700 or so. Will be putting an LSX 90/90 on it shortly, and removing the k&n fipk and putting on a regular lid setup. This is with bone stock heads (they are 01 heads though, but untouched) and an otherwise bone stock engine.
Not quite what Thunder got, but im still happy 
Originally Posted by RTCamaroSS
...but it seems to die after 6700 or so.
__________________
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
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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.
Originally Posted by RTCamaroSS
Ditched my ASA cam, and went with a TRex. Ditched the SLP longtubes, and got some Dynatech 1 3/4 to 1 7/8's headers, and added some harland sharp rockers. With the other basic bolt ons, pulley, k&n fipk, ls6 intake, ported TB, and true duals... i pulled..
427rwhp/398rwtq... pretty happy with it, but it seems to die after 6700 or so. Will be putting an LSX 90/90 on it shortly, and removing the k&n fipk and putting on a regular lid setup. This is with bone stock heads (they are 01 heads though, but untouched) and an otherwise bone stock engine. Not quite what Thunder got, but im still happy
427rwhp/398rwtq... pretty happy with it, but it seems to die after 6700 or so. Will be putting an LSX 90/90 on it shortly, and removing the k&n fipk and putting on a regular lid setup. This is with bone stock heads (they are 01 heads though, but untouched) and an otherwise bone stock engine.
Not quite what Thunder got, but im still happy Bad ***!
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Originally Posted by RTCamaroSS
Ditched my ASA cam, and went with a TRex. Ditched the SLP longtubes, and got some Dynatech 1 3/4 to 1 7/8's headers, and added some harland sharp rockers. With the other basic bolt ons, pulley, k&n fipk, ls6 intake, ported TB, and true duals... i pulled..
427rwhp/398rwtq... pretty happy with it, but it seems to die after 6700 or so. Will be putting an LSX 90/90 on it shortly, and removing the k&n fipk and putting on a regular lid setup. This is with bone stock heads (they are 01 heads though, but untouched) and an otherwise bone stock engine. Not quite what Thunder got, but im still happy
427rwhp/398rwtq... pretty happy with it, but it seems to die after 6700 or so. Will be putting an LSX 90/90 on it shortly, and removing the k&n fipk and putting on a regular lid setup. This is with bone stock heads (they are 01 heads though, but untouched) and an otherwise bone stock engine.
Not quite what Thunder got, but im still happy 
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!LS1 11 Second Club
Joined: Apr 2003
Posts: 7,133
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From: Miami
Originally Posted by RTCamaroSS
Ditched my ASA cam, and went with a TRex. Ditched the SLP longtubes, and got some Dynatech 1 3/4 to 1 7/8's headers, and added some harland sharp rockers. With the other basic bolt ons, pulley, k&n fipk, ls6 intake, ported TB, and true duals... i pulled..
427rwhp/398rwtq... pretty happy with it, but it seems to die after 6700 or so. Will be putting an LSX 90/90 on it shortly, and removing the k&n fipk and putting on a regular lid setup. This is with bone stock heads (they are 01 heads though, but untouched) and an otherwise bone stock engine. Not quite what Thunder got, but im still happy
427rwhp/398rwtq... pretty happy with it, but it seems to die after 6700 or so. Will be putting an LSX 90/90 on it shortly, and removing the k&n fipk and putting on a regular lid setup. This is with bone stock heads (they are 01 heads though, but untouched) and an otherwise bone stock engine.
Not quite what Thunder got, but im still happy Oh, yeah, nice TRex numbers. Put some stock rockers back on there and see if your upper RPM die off goes away. That cam should be pulling harder up to 7K, though the Thunder info does show it peaking at 6700. Hmm.
Last edited by SouthFL.02.SS; Jun 2, 2005 at 12:06 PM.
Originally Posted by RTCamaroSS
Ditched my ASA cam, and went with a TRex. Ditched the SLP longtubes, and got some Dynatech 1 3/4 to 1 7/8's headers, and added some harland sharp rockers. With the other basic bolt ons, pulley, k&n fipk, ls6 intake, ported TB, and true duals... i pulled..
427rwhp/398rwtq... pretty happy with it, but it seems to die after 6700 or so. Will be putting an LSX 90/90 on it shortly, and removing the k&n fipk and putting on a regular lid setup. This is with bone stock heads (they are 01 heads though, but untouched) and an otherwise bone stock engine. Not quite what Thunder got, but im still happy
427rwhp/398rwtq... pretty happy with it, but it seems to die after 6700 or so. Will be putting an LSX 90/90 on it shortly, and removing the k&n fipk and putting on a regular lid setup. This is with bone stock heads (they are 01 heads though, but untouched) and an otherwise bone stock engine.
Not quite what Thunder got, but im still happy 
nice numbers
Originally Posted by RTCamaroSS
Ditched my ASA cam, and went with a TRex. Ditched the SLP longtubes, and got some Dynatech 1 3/4 to 1 7/8's headers, and added some harland sharp rockers. With the other basic bolt ons, pulley, k&n fipk, ls6 intake, ported TB, and true duals... i pulled..
427rwhp/398rwtq... pretty happy with it, but it seems to die after 6700 or so. Will be putting an LSX 90/90 on it shortly, and removing the k&n fipk and putting on a regular lid setup. This is with bone stock heads (they are 01 heads though, but untouched) and an otherwise bone stock engine. Not quite what Thunder got, but im still happy
427rwhp/398rwtq... pretty happy with it, but it seems to die after 6700 or so. Will be putting an LSX 90/90 on it shortly, and removing the k&n fipk and putting on a regular lid setup. This is with bone stock heads (they are 01 heads though, but untouched) and an otherwise bone stock engine.
Not quite what Thunder got, but im still happy Got lots of questions cuz I was just getting ready to go with LS1 stage II heads flowing 305 on the IN and 260 on the EX. I am guessing you already have LS6 heads? Mine are the LS1 in my '00 WS6. Was gonna match it up with a cam with 240-260 dur 112-114 lobe @ 550 lift.
I think he meant hyd. pump.. oil building up in the lifter.. not allowing the valves to close al the way.... the reason people go to solid roller setups... by I could be wrong.
Nice #'s too by the way.
Nice #'s too by the way.
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From: Miami
Originally Posted by ws6togo
What are the specs from the TRex? Who did or where did you get the ported TB from. I have heard that Shanner?? is a good TB. Are you true duals the x pipe style?
Got lots of questions cuz I was just getting ready to go with LS1 stage II heads flowing 305 on the IN and 260 on the EX. I am guessing you already have LS6 heads? Mine are the LS1 in my '00 WS6. Was gonna match it up with a cam with 240-260 dur 112-114 lobe @ 550 lift.
Got lots of questions cuz I was just getting ready to go with LS1 stage II heads flowing 305 on the IN and 260 on the EX. I am guessing you already have LS6 heads? Mine are the LS1 in my '00 WS6. Was gonna match it up with a cam with 240-260 dur 112-114 lobe @ 550 lift.
TRex is from Thunder------>
Most True duals have X junctions, though you'll see a few H junct.'s now and then.
Launching!
Joined: Dec 2003
Posts: 246
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From: Texas, dont mess with us!
There was some thread that pretty much said that ANY aftermarket aluminum rockers dont have enough weight where it counts,,, over the valve. Which creates float at X RPM with X ammount of lift. I think they were saying if you stay with a .590 and lower lift they were ok,, but what fun is that? 
Like everyone is saying, slam the stockers back on, but they are known to explode and send needle bearings everywhere... Sooo, i think it was nasty performance that modifies the stock rockers to handle high lift cams. You get durability, no float, and half the cost of aftermarket rockers.
Like everyone is saying, slam the stockers back on, but they are known to explode and send needle bearings everywhere... Sooo, i think it was nasty performance that modifies the stock rockers to handle high lift cams. You get durability, no float, and half the cost of aftermarket rockers. 
Excellent numbers! I wouldn't worry too much about the power falling off after 6700 unless it's a dramatic decline. I'm of the opinion that a lot of people exaggerate the powerband of large cams. I think you'll find that most T-ReX graphs peak at anywhere from 6400-6700 RPM, then carry near-peak power a bit beyond that.
Josh
Josh
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From: Fremont, CA
Yeah, im very happy with the numbers. Will be putting on a LSX 90/90 combo shortly, and hoping to gain a bit. I still think im having some lifter preload problems, so we have a few things to sort out. I have Comp R lifters in it.. so im thinking of going to a shorter pushrod to compensate. Once thats settled for good, the LSX will go on, and hoping to hit 440 or so.. maybe more, maybe less, dunno. We'll see though
And yes, bone stock 2001 heads. Only reason they are 2001, is that i had a stripped spark plug hole, so i swapped out the heads, installed the Comp R's at that time, and ARP head bolts.
And yes, bone stock 2001 heads. Only reason they are 2001, is that i had a stripped spark plug hole, so i swapped out the heads, installed the Comp R's at that time, and ARP head bolts.
Originally Posted by RTCamaroSS
Yeah, im very happy with the numbers. Will be putting on a LSX 90/90 combo shortly, and hoping to gain a bit. I still think im having some lifter preload problems, so we have a few things to sort out. I have Comp R lifters in it.. so im thinking of going to a shorter pushrod to compensate. Once thats settled for good, the LSX will go on, and hoping to hit 440 or so.. maybe more, maybe less, dunno. We'll see though
And yes, bone stock 2001 heads. Only reason they are 2001, is that i had a stripped spark plug hole, so i swapped out the heads, installed the Comp R's at that time, and ARP head bolts.
And yes, bone stock 2001 heads. Only reason they are 2001, is that i had a stripped spark plug hole, so i swapped out the heads, installed the Comp R's at that time, and ARP head bolts.
Very little preload is required for Comp R lifters.
Rick