STREET 454 LSX Results Inside
#41
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Here's one that did 600rwhp by American HP and his vette. He doesnt say what the bigger cam made, but when he downgraded he said it "still" pulled to 600rwhp.
https://ls1tech.com/forums/showthrea...hlight=lsx+454
another that did 624, but another cam bump down that still made 600rwhp.
https://ls1tech.com/forums/showthrea...976&highlight=
both of them are running TFS 245's. There are just the ones I know of from this forum...
Not that i'm doubting you and your shop, you're the man Ron and i'm ordering MY TFS heads from you next week. I'm just curious. I started this build with 600rwhp as my goal cause I had been seeing it, this just discourages me, thats all.
and an lsx 454 is a 4.185 bore x 4.125 stroke where a 427 is a 4.125 bore x 4" stroke, so you're increasing bore and stroke thus hp AND torque, no?
https://ls1tech.com/forums/showthrea...hlight=lsx+454
another that did 624, but another cam bump down that still made 600rwhp.
https://ls1tech.com/forums/showthrea...976&highlight=
both of them are running TFS 245's. There are just the ones I know of from this forum...
Not that i'm doubting you and your shop, you're the man Ron and i'm ordering MY TFS heads from you next week. I'm just curious. I started this build with 600rwhp as my goal cause I had been seeing it, this just discourages me, thats all.
and an lsx 454 is a 4.185 bore x 4.125 stroke where a 427 is a 4.125 bore x 4" stroke, so you're increasing bore and stroke thus hp AND torque, no?
Hmmmm...... A GTO drive train and a vette drivetrain, Not similar cars at all. Id rather have 550 TQ at 4k then 620 at 7k TQ wins races
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#42
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sick car for sure, i'd be proud to own that goat!
....and as for the LS7/TFS argument, here's one for the LS7: https://ls1tech.com/forums/showthrea...&highlight=454
i'm a little discouraged that their graph doesn't show RPM's, but peak numbers and that torque curve are enticing. note the 11.25:1 SCR, stock H20 pump, stock pulley, and unported LS7 intake...
TFS's are reputed for their power under the curve, but i'm not so sure the LS7 heads should be discounted because of that. i planned on running LS7's on my LSX, but that's still up in the air, and the announcement of TFS's 6-bolt head has me second-guessing my previous intentions....i'd like to see a 454LSX car on a dyno and a before/after trial done with several head/cam combos....as well as sheet metal vs. LS7. i want to see how much is actually lost down low and how much is actually gained up high. i'll take the 10rwhp loss down low for the 50rwhp gain up top if that's the case....
....and as for the LS7/TFS argument, here's one for the LS7: https://ls1tech.com/forums/showthrea...&highlight=454
i'm a little discouraged that their graph doesn't show RPM's, but peak numbers and that torque curve are enticing. note the 11.25:1 SCR, stock H20 pump, stock pulley, and unported LS7 intake...
TFS's are reputed for their power under the curve, but i'm not so sure the LS7 heads should be discounted because of that. i planned on running LS7's on my LSX, but that's still up in the air, and the announcement of TFS's 6-bolt head has me second-guessing my previous intentions....i'd like to see a 454LSX car on a dyno and a before/after trial done with several head/cam combos....as well as sheet metal vs. LS7. i want to see how much is actually lost down low and how much is actually gained up high. i'll take the 10rwhp loss down low for the 50rwhp gain up top if that's the case....
#44
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Can't wait to see how your motor turns out PRAY.
I could imagine what that 454 would do for your zo6, it would pin you to your seat so hard that it would be difficult to reach up and grab the next gear. LOL. It would be sweet. So Ron why haven't we seen any Corvettes with an LSX 454 ?? Make me an offer I can't refuse Ron and I'll be there as a test mule. lol![Grin](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_grin.gif)
I could imagine what that 454 would do for your zo6, it would pin you to your seat so hard that it would be difficult to reach up and grab the next gear. LOL. It would be sweet. So Ron why haven't we seen any Corvettes with an LSX 454 ?? Make me an offer I can't refuse Ron and I'll be there as a test mule. lol
![Grin](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_grin.gif)
I think it is also, just a little bit easier to offset the front end weight on a F-Body than a Corvette... We have already figured where we can save the weight on the Camaro to reduce the weight added by the LSX...
Although AMERICAN_HP has one sick LSX 454 in his Vette... Oh yeah it is the same one going in our SS... heheh
Last edited by Azrael; 06-02-2008 at 08:54 PM.
#45
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That is why I went with the stroked LS3 option on mine. I didn't want to upset the car. I had a Procharger on there before and I could feel the difference. So I can imagine what a LSX block would do. I was also going to do the 427 option but you can't juice it or FI it. So the 416 was the best option. It does put you into the seat nice and hard as it.
To the OP, that is an amazing combo for your ride. I have a good friend with an 04 that I keep telling that the only way we are going to get this thing going is with mass cubes and tq.
To the OP, that is an amazing combo for your ride. I have a good friend with an 04 that I keep telling that the only way we are going to get this thing going is with mass cubes and tq.
#46
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That is why I went with the stroked LS3 option on mine. I didn't want to upset the car. I had a Procharger on there before and I could feel the difference. So I can imagine what a LSX block would do. I was also going to do the 427 option but you can't juice it or FI it. So the 416 was the best option. It does put you into the seat nice and hard as it.
To the OP, that is an amazing combo for your ride. I have a good friend with an 04 that I keep telling that the only way we are going to get this thing going is with mass cubes and tq.
To the OP, that is an amazing combo for your ride. I have a good friend with an 04 that I keep telling that the only way we are going to get this thing going is with mass cubes and tq.
I could get it down lower but below that the car would be a shell of what it was.
#47
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sick car for sure, i'd be proud to own that goat!
....and as for the LS7/TFS argument, here's one for the LS7: https://ls1tech.com/forums/showthrea...&highlight=454
i'm a little discouraged that their graph doesn't show RPM's, but peak numbers and that torque curve are enticing. note the 11.25:1 SCR, stock H20 pump, stock pulley, and unported LS7 intake...
TFS's are reputed for their power under the curve, but i'm not so sure the LS7 heads should be discounted because of that. i planned on running LS7's on my LSX, but that's still up in the air, and the announcement of TFS's 6-bolt head has me second-guessing my previous intentions....i'd like to see a 454LSX car on a dyno and a before/after trial done with several head/cam combos....as well as sheet metal vs. LS7. i want to see how much is actually lost down low and how much is actually gained up high. i'll take the 10rwhp loss down low for the 50rwhp gain up top if that's the case....
....and as for the LS7/TFS argument, here's one for the LS7: https://ls1tech.com/forums/showthrea...&highlight=454
i'm a little discouraged that their graph doesn't show RPM's, but peak numbers and that torque curve are enticing. note the 11.25:1 SCR, stock H20 pump, stock pulley, and unported LS7 intake...
TFS's are reputed for their power under the curve, but i'm not so sure the LS7 heads should be discounted because of that. i planned on running LS7's on my LSX, but that's still up in the air, and the announcement of TFS's 6-bolt head has me second-guessing my previous intentions....i'd like to see a 454LSX car on a dyno and a before/after trial done with several head/cam combos....as well as sheet metal vs. LS7. i want to see how much is actually lost down low and how much is actually gained up high. i'll take the 10rwhp loss down low for the 50rwhp gain up top if that's the case....
![Grin](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_grin.gif)
#48
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oh i know....aussie's are crazy. every time i check out the stuff they build, it makes me wish i made twice as much money as i do and had their devotion to the hobby/sport.
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Neat car but I think if I wanted that much torque id probably just end up getting an 03 cobra and slapping a kb on it sounds much easier and cheaper? What kind of shot do you plan on hitting that thing with it already makes good power especially for an n/a street motor it will be a beast on the spray... What are you hoping to run with it?
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They forgot to mention that the car was virtually unstreetable, and ultimately went with a smaller cam and made the same power as vengence.
My setup is almost EXACT (all the way to the cam) and I am making a little bit more power, but I am running a tad more cr.
I tried a sheetmetal intake and I could have easily hit mid 600's. But it was at the SEVERE sacrafice of the bottom end. The graph literally NEVER fell off.
I just swapped cams again. As well as a FAST 92 with about 10 hours worth of blending. We shal see.
Great job guys...
My setup is almost EXACT (all the way to the cam) and I am making a little bit more power, but I am running a tad more cr.
I tried a sheetmetal intake and I could have easily hit mid 600's. But it was at the SEVERE sacrafice of the bottom end. The graph literally NEVER fell off.
I just swapped cams again. As well as a FAST 92 with about 10 hours worth of blending. We shal see.
Great job guys...
Last edited by Jeff@TotalPerformanceEng; 06-13-2008 at 11:31 PM.
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Never seen a 454LSx in a Vette?? Heres mine..
![](http://i22.photobucket.com/albums/b320/AMERICAN_HP/Generalpictures520.jpg)
![](http://i22.photobucket.com/albums/b320/AMERICAN_HP/GeneralPictures036.jpg)
![](http://i22.photobucket.com/albums/b320/AMERICAN_HP/Generalpictures520.jpg)
![](http://i22.photobucket.com/albums/b320/AMERICAN_HP/GeneralPictures036.jpg)
Can't wait to see how your motor turns out PRAY.
I could imagine what that 454 would do for your zo6, it would pin you to your seat so hard that it would be difficult to reach up and grab the next gear. LOL. It would be sweet. So Ron why haven't we seen any Corvettes with an LSX 454 ?? Make me an offer I can't refuse Ron and I'll be there as a test mule. lol![Grin](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_grin.gif)
I could imagine what that 454 would do for your zo6, it would pin you to your seat so hard that it would be difficult to reach up and grab the next gear. LOL. It would be sweet. So Ron why haven't we seen any Corvettes with an LSX 454 ?? Make me an offer I can't refuse Ron and I'll be there as a test mule. lol
![Grin](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_grin.gif)
#58
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I'm pretty sure we used LS7 lifters. As for the peak hp/rpm thing the reason it's low is this is a street motor. On the street you rarely see above 5500rpm so the power band is down where it can be used.