SFR turbo system 640WHP @ 14psi
02-22-2007, 09:52 AM
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SFR turbo system 640WHP @ 14psi
I just wanted to let everyone know that we are finally getting some more high horsepower dyno charts from some of our customers who have purchased these kits over the last year.KevinApex007 just bought a kit a few weeks back and has already been hitting the dyno.His results are impressive to say the least especially when you look at his buildup which is pretty modest compared to some of the stoker set-ups that are being tested and tuned.So here is his list of goodies:Non-sleeved block,stock heads and headgaskets, Utec w/ map sw. Pauter rods, Arias 9.5:1, ARP, JWT cams, ACTProlite flywheel, clutch, AAM return fuel stageI-II, re-flash, RC 750 injs. Crawford plenum, SVRT solid mounts, Stillen sways GTspec braces, Teins flex w/EDFC APracing 6pot fr. 4pot r, Volk LE28,APS 3" exhaust, Speed Force Racing twin-turbo system with 60-1hi-fi's. The car is running on pure 91 octane.There was another run after the 640WHP and he was headed for 650-660 but had to cut it short because of some fuel starvation issues.We are working with him to resolve these issues so he could get to his target boost of 17-18 psi
The results on the Dynojet with SAE correction:
12.2 psi of boost 591WHP and 505 ft/lbs
http://www.speedforceracing.com/imag.../350ztt591.jpg
14 psi of boost 640WHP and 531 ft/lbs
And there will be more charts coming soon!
The results on the Dynojet with SAE correction:
12.2 psi of boost 591WHP and 505 ft/lbs
http://www.speedforceracing.com/imag.../350ztt591.jpg
14 psi of boost 640WHP and 531 ft/lbs
And there will be more charts coming soon!
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02-22-2007, 11:25 AM
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Well, these days if you're pushing anything short of 600whp you're weaksauce... It's making it tough for anyone to consider posting up numbers shy of that. LOL.
Great work guys. Yet another notch in the boosted VQ belt.
Great work guys. Yet another notch in the boosted VQ belt.
02-22-2007, 11:41 AM
#12
yup, 9.5:1 comp, .020 overbore, oem headgasket, jwt cams, regular arp main/head studs, 91 octane... that kit flows some serious air! Kevin's torque is simply scary lol. When I was filming the 640 run it was just nuts how fast it blew thru 4th gear o_O
Last edited by Juztin; 02-22-2007 at 11:49 AM.
02-22-2007, 11:47 AM
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Originally Posted by faster than u
thats the kit i plan to go with..... sweet numbers, i cant wait to see some videos of that beast in action
Here is a link to the video.
http://video.google.com/videoplay?do...03687245584431
02-22-2007, 11:50 AM
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Originally Posted by BriGuyMax
This is on a 3.5L VQ @ only 14lbs?????
Yes, with the typical bolt-ons and an extremely modest motor build.No stroker,no big valve heads and no race fuel. Big turbos get the job done at lower boost levels
02-22-2007, 11:51 AM
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Originally Posted by roncfpz
Wow! That is impressive power at 12psi. Makes me wish I had gone with this kit originally but never did get any response from you guys. 
Ron, if you ever have trouble emailing us there is always two phone numbers to reach me at.
02-22-2007, 11:53 AM
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Originally Posted by sentry65
nice numbers! that kit sounds awesome from the videos i've seen
only thing I don't like about it is the smaller low end numbers and how long it takes to spool those big turbos up
that'd be a beast of a setup with the 4.24 stroker kit
only thing I don't like about it is the smaller low end numbers and how long it takes to spool those big turbos up
that'd be a beast of a setup with the 4.24 stroker kit
You are correct but you still have to admire how flat the torque curve is considering alot of turbos have torque curves that drop drastically past 5000 rpm.
02-22-2007, 11:57 AM
#17
well that's because they're bigger turbos and don't start run out of their efficiency range as much. It's mainly flat at 5000-7000 rpms though. Before that it's way low
this kit is very different from the normal turbo kits from the Z which spool up really early and mainly emphasize the midrange power. This one spools up later and gives more power later
this kit is very different from the normal turbo kits from the Z which spool up really early and mainly emphasize the midrange power. This one spools up later and gives more power later
Last edited by sentry65; 02-22-2007 at 12:00 PM.
02-22-2007, 12:04 PM
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2 60-1s are pretty large for a 3.5 liter that only revs to 6700 rpms. Making peaky torque at 5k leaves you with only 1800 rpms to play with. This kit would be great on a stroked motor that can rev to 7500 safely though.
Last edited by Enron Exec; 02-22-2007 at 12:06 PM.
02-22-2007, 12:12 PM
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Originally Posted by Enron Exec
2 60-1s are pretty large for a 3.5 liter that only revs to 6700 rpms. Making peaky torque at 5k leaves you with only 1800 rpms to play with. This kit would be great on a stroked motor that can rev to 7500 safely though.
It is a little laggy but once you get going in first, its all over with especially with some good shifting...... you always end up right there in the meat of your powerband. I am running on the stock motor and the higher compression helps with spooling the turbos so nobody ever notices the lag because.....before they realize what is going on, they are pinned in their seats as I am burning up the Pilot Sports through fourth gear
I would love to see what this kit would do on the GTM stroker with some 62-1 hi-fi's instead of the 60-1 hi-fi's. A set-up like this should generate 1200WHP at 22-24psi