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HCI2000SS vs Freakls6

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Old 10-17-2018, 10:09 AM
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I wonder how close in weight they are to the ls3 valve
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Old 10-17-2018, 11:28 AM
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Originally Posted by HCI2000SS
Hio, in your opinion what is it that makes these LS6's run so good for what they are? I wonder if the heads are better than what the numbers suggest or maybe it's in the valvetrain or something.
they like to rev. You have 1000 more useable rpm than a ls1. Lets face it....the ls1 was basically just a 5.7 truck motor with slightly more compression. Some years even used the same cams as the trucks. The ls6 is a high performance 5.7.

Now as far as these races are concered there are lots of stuff that affect acceleration. The power of the cammed ls6 is low to me since i made 451/423 with a stock cam on pump. So he still is leaving some on the table somewhere.


Be nice to know some et/mph on each car.

Originally Posted by Chris25
I think it takes a well thought setup and it sounds like he thought it out and did the research. Allot of people still fall into the mindset of 102s are to big and 1 7/8 headers dont make more power and wonder why there car's run poorly.
troof

Originally Posted by HCI2000SS
You also have a smaller cam than before right? Which means that LS6 longblock is even better than a 30 hp gain
cam is the least of the worries when trying to make a car accelerate.

Originally Posted by Freakls6
Correct me if im wrong but true 243 heads are running titanium hollow stem valves that are sodium filled correct ?
they are not titanium.

Originally Posted by Chris25
I wonder how close in weight they are to the ls3 valve
ls3 valves are slightly heavier because they are larger.
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Old 10-17-2018, 12:36 PM
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A proper H/c car can run exceptionally well. I spun my sbe ls1 to 7600 with ls6 heads and a 247/255 .660/.650 cam, it pulled away from some pretty serious cobras and trinity gt500’s from a roll, with a 5,500 stall
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Old 10-17-2018, 12:57 PM
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I'm starting to wonder if maybe my valvetrain is not as efficient as his. The PRC 5.3 heads have the heavier stainless steel valves, and BTR 660 dual valve springs. Plus i'm running forged pistons and rods too. While all that adds strength it also adds weight
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Old 10-17-2018, 01:02 PM
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Originally Posted by HCI2000SS
I'm starting to wonder if maybe my valvetrain is not as efficient as his. The PRC 5.3 heads have the heavier stainless steel valves, and BTR 660 dual valve springs. Plus i'm running forged pistons and rods too. While all that adds strength it also adds weight
The TFS heads I have originally come with those heavy SS valves they got ditched for the turned down LS3 valves.
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Old 10-17-2018, 01:07 PM
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Originally Posted by Chris25
The TFS heads I have originally come with those heavy SS valves they got ditched for the turned down LS3 valves.
Simply for the weight, and no other reason?
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Old 10-17-2018, 01:15 PM
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Originally Posted by HCI2000SS
Simply for the weight, and no other reason?
Yah freed up some weight on the valve train.
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Old 10-17-2018, 01:51 PM
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Sounds like a good match. Be cool to see round 2. So were you guys starting from second or third gear with those 50-60mph starts?
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Old 10-17-2018, 01:56 PM
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Originally Posted by SoFla01SSLookinstok
Sounds like a good match. Be cool to see round 2. So were you guys starting from second or third gear with those 50-60mph starts?
Had to start in 3rd because he would spin all through 2nd. Still trying to figure how he spins at those speeds on those 555R's lol
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Old 10-17-2018, 02:18 PM
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Originally Posted by HCI2000SS
Had to start in 3rd because he would spin all through 2nd. Still trying to figure how he spins at those speeds on those 555R's lol
Yea, I would think they'd hook better than what it sounds like. Sounds like he's on a summer radial tire. Lol. Maybe dried out or too much air pressure?
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Old 10-17-2018, 02:19 PM
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Originally Posted by HCI2000SS
Had to start in 3rd because he would spin all through 2nd. Still trying to figure how he spins at those speeds on those 555R's lol
I never really felt the 555r's held all that well I mean they are definitely better than a street tire but nothing like a Mickey Thompson et street.
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Old 10-17-2018, 02:20 PM
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I mean im not blowing the tire off or lane changing loose in 3rd but u can definitely tell its not hooked and planted. If im quick enough on the 3-4 shift they will even chirp into 4th. Nt05R’s are sitting in the basement. That should solve my traction issues from a roll
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Old 10-17-2018, 02:24 PM
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Originally Posted by SoFla01SSLookinstok
Yea, I would think they'd hook better than what it sounds like. Sounds like he's on a summer radial tire. Lol. Maybe dried out or too much air pressure?
they are older 555R. Not dry rotted but older and was at 25 psi
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Old 10-17-2018, 02:28 PM
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And being that the tires aren't rotted and whatnot it should still hook better than it does. I mean it's only 450 rwhp for crying out loud, but it's acting like it's 550 rwhp lol. Not only is the car a freak but so are these particular 555R's it seems haha
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Old 10-17-2018, 02:34 PM
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You can vouch for me HCI. You seen me leave the show. Second gear rolling into it turned into a 1/8 mile rolling burnout lol
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Old 10-17-2018, 02:36 PM
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Originally Posted by Freakls6
You can vouch for me HCI. You seen me leave the show. Second gear rolling into it turned into a 1/8 mile rolling burnout lol
Maybe i missed it in the other post but what clutch are you running?
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Old 10-17-2018, 02:36 PM
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Yes I totally can vouch for this....i don't quite understand how it spins like this, but it definitely somehow does lol
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Old 10-17-2018, 02:56 PM
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Its a bew ls7 clutch pressure plate and flywheel all gm OEM parts. Gm performance slave cylinder and remote bleeder from tic performance
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Old 10-17-2018, 02:57 PM
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New not bew sorry
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Old 10-17-2018, 03:03 PM
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Originally Posted by Freakls6
Its a bew ls7 clutch pressure plate and flywheel all gm OEM parts. Gm performance slave cylinder and remote bleeder from tic performance
Toss in a lightweight clutch and that thing will really get moving. I bet that thing with an RPS twin carbon would be a monster.
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