What do you think of this?
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Joined: Mar 2004
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From: Raleigh, NC
What do you think of this? Recently came into contact with a dude with an LS1 that made some claims that I found rather hard to swallow, just wanting general opinions here from the people who know. The claim started from a discussion about how much power stock bottom ends can hold on various cars.
First claim:
Immediately called BS due to 580/604 on a 100 shot and the slow trap speed for that much horsepower.
Second claim:
Dyno charts:
http://terminalapathy.com/images/dyno1.jpg
http://terminalapathy.com/images/dyno2.jpg
Timeslip:
http://terminalapathy.com/images/slip.jpg
Interested as to what ya'll think. All horsepower/torque claims are at the wheels, not flywheel.
Mods feel free to move to a more appropriate forum, I couldn't figure out a good place for it.
Edit: It should be noted that I am not doubting the veracity of the timeslip or the dynosheets.
Edit x 2: The timeslip and claims are for a 1/8th mile track. To avoid any confusion.
First claim:
There's a guy w/ an LS1 TA that makes 580/604ish with stock bottom end. Just has ported heads and a 100 shot. Runs 6.90s@102 at the track w/ a 6 speed.
Second claim:
99 Transam Heads More performance ported heads 2.02 1.60, 232/236 .592 .598 (or something close) kooks long tubes, jesel shaft mounted rockers, pistons flycut for the valve clearence, moser 12 bolt 4.56's, ls6 intake, tubular kmember, coil overs, tnt 100 nitrous jet 150 wet jet, 405hp 387tq NA 580hp 602tq on spray. It is a stock bottom end car running best so far 6.94 @ 101.
http://terminalapathy.com/images/dyno1.jpg
http://terminalapathy.com/images/dyno2.jpg
Timeslip:
http://terminalapathy.com/images/slip.jpg
Interested as to what ya'll think. All horsepower/torque claims are at the wheels, not flywheel.
Mods feel free to move to a more appropriate forum, I couldn't figure out a good place for it.
Edit: It should be noted that I am not doubting the veracity of the timeslip or the dynosheets.
Edit x 2: The timeslip and claims are for a 1/8th mile track. To avoid any confusion.
Last edited by apathy; May 2, 2005 at 12:24 PM.
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From: The South
That is a low mph for a 6.9, but it's possible. You could easily make that much power on a stock bottom end. For awhile........
I don't see how to read that slip, but if it's saying the 60' was 1.46 I could believe 6.9 @ 101 in the 1/8.
Edit: Those green dyno curves, which I assume were ont he bottle, are all over the place. And it only spiked up for a short while. Was that tuned? I wouldn't be surprised if he used the untuned run, or at least not the final product, in order to get those high peaks. THe under curve certainly doesn't match the peaks though.
I don't see how to read that slip, but if it's saying the 60' was 1.46 I could believe 6.9 @ 101 in the 1/8.
Edit: Those green dyno curves, which I assume were ont he bottle, are all over the place. And it only spiked up for a short while. Was that tuned? I wouldn't be surprised if he used the untuned run, or at least not the final product, in order to get those high peaks. THe under curve certainly doesn't match the peaks though.
Last edited by blkZ28spt; May 2, 2005 at 12:53 PM.
Thread Starter
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From: Raleigh, NC
Said person claims that it is not a torque spike. The car is tuned on this run, and ran the timeslip on this tune.
I said it is a torque spike, which was obvious to me, and he is actually making about 520-530, which makes much more sense for the mods, and for the mph.
Whether or not the bottom end would hold up is irrelevant for this post though.
I said it is a torque spike, which was obvious to me, and he is actually making about 520-530, which makes much more sense for the mods, and for the mph.
Whether or not the bottom end would hold up is irrelevant for this post though.
first claim is bs because he doesn't mention that it has a cam....second one is believable and i don't find any other faults in his story besides the dyno graph that looks terrible...obviously untuned...
as far as bottom end...it will hold up well for awhile...but i'd say he is starting to push the limits...
as far as bottom end...it will hold up well for awhile...but i'd say he is starting to push the limits...
Thread Starter
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Joined: Mar 2004
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From: Raleigh, NC
Originally Posted by 777
first claim is bs because he doesn't mention that it has a cam....second one is believable and i don't find any other faults in his story besides the dyno graph that looks terrible...obviously untuned...
Perhaps I am being unclear. The original discussion started, as I previously said, in terms of how much a stock bottom end of various engines will hold. This person claims to have a 580rwhp stock bottom end LS1. I disagree with that claim, because an actual 580rwhp LS1 will trap much higher than that.
If he spiked 1000rwhp, it would not matter in the sense that we were talking about. Does that make sense? To claim that a stock bottom end LS1 is making 1000rwhp and trapping 101mph in the 1/8th mile?
Originally Posted by apathy
I haven't had a person yet claim that a 101 mph 1/8th mile trap in a 580rwhp LS1 is accurate. Are you the first?
well here is a member on this site...this goes to show you that anything is possible
specs
https://ls1tech.com/forums/etdb_vehicle.php?id=575
timeslip
https://ls1tech.com/forums/etdb_slip.php?id=593
last car on this page
https://ls1tech.com/forums/etdb.php?...c&pp=25&page=3
specs
https://ls1tech.com/forums/etdb_vehicle.php?id=575
timeslip
https://ls1tech.com/forums/etdb_slip.php?id=593
last car on this page
https://ls1tech.com/forums/etdb.php?...c&pp=25&page=3
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11 Second Club
Joined: Feb 2003
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From: The South
Well, it looks like the only 
is in the horsepower claims. He can wow people (and himself) all he wants with his awsome "peak numbers" but the graph shows a different story. Apparently the track does too. Then again a 6.9 1/8 isn't exactly slow. 
is in the horsepower claims. He can wow people (and himself) all he wants with his awsome "peak numbers" but the graph shows a different story. Apparently the track does too. Then again a 6.9 1/8 isn't exactly slow. LS1 Tech Stories
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Joined: Mar 2004
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From: Raleigh, NC
Originally Posted by blkZ28spt
Well, it looks like the only is in the horsepower claims. He can wow people (and himself) all he wants with his awsome "peak numbers" but the graph shows a different story. Apparently the track does too. Then again a 6.9 1/8 isn't exactly slow.
is in the horsepower claims. He can wow people (and himself) all he wants with his awsome "peak numbers" but the graph shows a different story. Apparently the track does too. Then again a 6.9 1/8 isn't exactly slow. The trap speed typically does not lie though, since it is basically just math of power vs. weight.
I appreciate everyone's input, was just wanting a few opinions on here. Thanks.
