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Old 05-17-2012, 02:23 PM
  #41  
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Default 408's make Power

My response is directed to the post by "techLs1" claiming Futral is lying about power numbers. If you want to make BIG power, get out your checkbook and call FUTRAL - otherwise refrain from posts which provide no value.

My old 408 made 552 at the tire with a FAST 92 intake. This was with 4800 stall and T-400 and Dana 60 rear. Dyno sheet attached. Allan Futral knows how to make big power - PERIOD. It is not cheap to do, but they have the secret sauce.

By the way, attached is my dyno sheet on the 415ci that made 614 at the tire. Again this was through a Neal Chance 5400 Stall, T-400 Transmission and a Dana 60 rear.

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Attached Thumbnails Futral LS2-fms-dyno.jpg   Futral LS2-final-dyno-415ci.jpg  
Old 05-17-2012, 02:55 PM
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Some people always wanna make that claim that Futral is messing with the dyno or other nonsense but the fact is Allan knows his ****. That's why we call him the LS Whisperer down here.
Old 05-17-2012, 07:29 PM
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Well, if you need to get out your parents checkbook to have your car worked on have at it. I'm just saying the numbers seem high and not realistic. I don't doubt that they are fine mechanics and know what they are doing, but for the given combo's they seem a little inflated. So Im saying post up your 1/4 times and let's see if those numbers are accurate. If they are real there should be nothing to hide. I could be wrong but would love to have someone explain how those high numbers are accurate other then just saying "X" shop rules. I welcome for someone to explain the engineering behind the science of those numbers vs. web-hype.
Old 05-17-2012, 07:50 PM
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1/4 mile isn't always the determining factor because not everyone wants to maximize their suspension for great et's. My trans am made 640/580 and ran a 10.9 @ 132 with a measly 1.8 60'. It had ccw's on it with lowering springs and a handling suspension. If I was interested in maximizing my power I could have put drag suspension and slicks and skinnies on it but that didn't interest me all that much. I wanted big power but to not be one dimensional.
Old 05-17-2012, 09:02 PM
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Originally Posted by techls1
Well, if you need to get out your parents checkbook to have your car worked on have at it. I'm just saying the numbers seem high and not realistic. I don't doubt that they are fine mechanics and know what they are doing, but for the given combo's they seem a little inflated. So Im saying post up your 1/4 times and let's see if those numbers are accurate. If they are real there should be nothing to hide. I could be wrong but would love to have someone explain how those high numbers are accurate other then just saying "X" shop rules. I welcome for someone to explain the engineering behind the science of those numbers vs. web-hype.
First, the working capital I'm using is not from my parents, but from the fruits of my own labor. Second, you claim someone is lying so they can sell parts and you make these claims based off what you have seen on the Internet. In both of your posts you use inflametory language to state a point of view which has no basis or foundation.

The original poster is very proud of the build and from my experience with Futral Motorsports, both parties should be very happy with the results. We are happy to have you at the site, but your baseless comments should be kept to yourself.

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Old 05-17-2012, 09:19 PM
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520 is very possible! thats only 605-610hp at the Flywheel in an M6 vette and a 364cid engine with 350+cfm heads should easily be able to do this built right with the supporting hardware!
No two combinations are the same and usually its the good shops that set the Standards that everyone else shoots for
I say Congrats Thats a Awesome Build! if you don't have anything positive to add keep it to yourself and Go build some Power for yourself That will keep ya busy
Old 05-17-2012, 09:32 PM
  #47  
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What is this with the parents check book?? I'm not a kid, I have a dynojet dyno for four wheelers. The only difference between mine n Allan's is the wheel. It's the same n the four wheeler world when I come out n beat someone with alot less motor they wine n cry saying I'm lying. If u don't believe us then put up some money and we will take the motor apart for u, if not move along and get ur parents to buy u something better. Maybe like a beige Volvo!
Old 05-18-2012, 01:02 PM
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QUOTE=Top Secret 48;16324763]What is this with the parents check book?? I'm not a kid, I have a dynojet dyno for four wheelers. The only difference between mine n Allan's is the wheel. It's the same n the four wheeler world when I come out n beat someone with alot less motor they wine n cry saying I'm lying. If u don't believe us then put up some money and we will take the motor apart for u, if not move along and get ur parents to buy u something better. Maybe like a beige Volvo! [/QUOTE]


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Old 05-18-2012, 02:09 PM
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Originally Posted by ZGLASS
yes but that 408 was at 14-1 compression on race gas. Not really a street motor. most 408 are in the 480-510whp range so yes 520 out of a stock bottom end ls2 is not the norm. especially with ported ls3 heads and a ported stock intake. I can see were that seems a bit high. Had is been worked TFS 225's with a ported fast 102/102 at 11.8-1 compression with a big cam then I can see those numbers happening.

But Dyno numbers can be different dyno to dyno. So if the car goes out and runs 130+ it's making some good power.
I have a 403ci LS2 motor with Trick flow 215cnc heads with some custom work and bigger intake valves, Ported fast 90mm and 90mm NW TB at 12.3-1 compression on the first dyno pull it made 450rwhp and 394rwt but ran a 10.57@128mph. Then we realized the car was 3 quarts low on tranny fluid. We topped off the tranny with the correct amount of fluid and ran the car again. Bam 10.39@129mph. (Now Futral didn't build this motor). Since then I have pulled the converter out and had it recut. The car now makes 551rwhp and 513rwt. (No new 1/4 times yet). I know the OP very well and I myself have had work done at Futral's shop. The dude knows how to make fast cars. (We are also at sea level. Which makes a difference). The op's stock bottom end LS1 Formula he use to have made something like 480rwhp N/A through a A4 tranny. I have no doubt that this car made this power.

My old stock bottom end motor that Allen built went 10.90@123mph N/A fullweight and with stock suspension..

Last edited by odarabla; 05-18-2012 at 02:49 PM.
Old 05-28-2012, 05:43 PM
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Were the heads milled at all?! Very interested in this cam...
Old 05-28-2012, 10:29 PM
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I would like to see the same car on a different dyno.
Old 06-01-2012, 10:52 PM
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Any more details on the specs of this cam or is it a secret...?! I just picked up an L76 from a G8 GT and would love to make those kinda numbers
Old 06-05-2012, 08:34 AM
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Heads were milled to 65cc to bring compression almost back to stock. Cam is 232/246
Old 06-06-2012, 05:25 PM
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Im surprised that cam cleared with the heads milled but that's good to know. I'm assuming compression would be about in the 10.8/1 range then?! What about lift and LSA?!



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