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Author
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Topic: Anyone with high compression and blower?
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1993 GT
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Member # 3104
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posted
 
 
I have a 306 with 10:5:1 compression currently has a 150 shot of NOS. I f I dont sell the car I want to switch to an S-trim but I've heard this compression is not blower friendly. If I do run an S-trim can I get away with at least 10lbs of boost?
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Red 1993GT
Posts: 130 | From: San jose | Registered: Jul 2003
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Wildfire532FB
CAFords OG
Member # 1482
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posted
i think we have the same compression, and we're running 13lbs with stage 2 heads and stage 2 intake and blower cams without the stage 2 heads and intake it would be 20lbs. We're running 110 leaded race gas and it doesn't get near detonation. Infact our engine is too big for the blower. The blower doesn't push enough air for the engine.
[ August 15, 2004, 07:39 PM: Message edited by: Cobra5.0JEEP ]
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68 Fastback
84 CJ7
94 HMMWV
95 GT
03 F350
17 Fusion Hybrid
Posts: 17580 | From: 530 | Registered: Jun 2002
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1993 GT
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Member # 3104
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posted
I want to run it on 91 octane of course I would get a custom tuned chip for the car. Do oyu think I can run the stock blower pully and 91 octane?
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Red 1993GT
Posts: 130 | From: San jose | Registered: Jul 2003
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2stangs69-91
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Member # 1951
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I am running around 9.8 331 with flat tops. with a S trim the only reason I didn't go lower compression was because I am using a water/meth injection under boost.
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69 Mustang on hold
1991 LX hatch getting a make over
1994 F150 4X4 351
2006 Yamaha V-max 1200 Modded
Posts: 3711 | From: Redding | Registered: Oct 2002
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SmokinLX
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Member # 1684
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Im runnin 9.7 with sc trim runnin 91 octane,soon to add the meth inj.
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Dont claim power if ya cant mile per hour. 10 second AOD
Posts: 4388 | From: East Bay | Registered: Aug 2002
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9lbpony
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Member # 3510
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My brother's LS1 ran 12psi with 10.5:1 compression with aluminum heads. It can be done but you'll be pulling a LOT of timing. Alternately you can put some of that timing back on street gas with water/alky injection. It works wonders.
prior to the water/alky it ran peak timing of around 14^. Afterwards it was running 23^ and making a lot more power.
Posts: 111 | Registered: Oct 2003
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BlacksheepMod50
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Member # 2378
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I have a 4.6 stroked to a 5.0 with flat tops pushing anywhere from 10.5:1 - 11:1 compression. I want to run nitrous. Does anyone know how well this will work? assembly is all forged. Probe pistons.
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98 4.6, stroked to 5.0, all forged, 11:1 comp, cams, LTs, Tubular K-member & A-Arms, Coilovers, Saleen rims, 99+ mani., ported F150 heads. And more..
Posts: 288 | From: Fair Oaks (Sacramento) | Registered: Jan 2003
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AJBlackGT
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Member # 3936
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Nitrous loves compression, while it is not good if you want to run a healthy amount of boost.
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90 Notch
Posts: 1896 | From: Sacramento | Registered: Dec 2003
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FasterDamnit
Bad Attitude
Member # 442
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![[worship]](graemlins/worship.gif)
quote:
Originally posted by 67stang:
I have a 10.5:1 331, carbed. With a S-trim at 6psi it made 515 rwhp/468lb.ft. yesterday on the dyno.
![[patriot]](graemlins/patriot.gif) ![[burnout]](graemlins/burnout.gif)
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'92 LX T5
Looked stock, went 11's 11.90 at 115mph.
'65 Mustang 347
www.fordmuscle.com
Livin' in the Carolina Pines
Posts: 2971 | From: NorCal | Registered: Sep 2001
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BCINGUU
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Member # 2397
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posted
While it is true that you want lower compression if you're running boost, I have 10.5:1 compression on my all forged motor and am running 12 pounds of boost from my SQ trim. I use water/alcohol injection to raise the octane and it works ok, but I can only run 18 degrees of timing with this setup. Still, that makes over 500 rwhp. http://93cobra.freeservers.com
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93 Cobra #4563 347ci 12.0@118 505rwhp 524tq
90 GT "Saleen Cobra" style convertible 347ci
67 GT "Eleanor" style coupe 347ci
Posts: 1425 | From: San Jose, CA | Registered: Jan 2003
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2stangs69-91
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Member # 1951
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BCINGU you are missing alot of timming you should be able to run alot more. What is your alch/meth mix? I would go to a bigger nozzle and adjust your mix I have talked to The owner of the snow boost cooler and he runs a 70/30 mix of Meth to water on his road track car.
67stang when you going to have that beast to the track?
[ August 20, 2004, 01:57 PM: Message edited by: 2stangs69-91 ]
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69 Mustang on hold
1991 LX hatch getting a make over
1994 F150 4X4 351
2006 Yamaha V-max 1200 Modded
Posts: 3711 | From: Redding | Registered: Oct 2002
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BCINGUU
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Member # 2397
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posted
I'm running 60% alcohol, 40% water with a McMaster-Carr brass spray mister at 15gph, the largest one they have.
But, I had rust in my fuel cell that I use as a water/alky tank, and it was clogging the filter, so flow was probably restricted. I replaced the tank and haven't gone out to re-tune it.
You're probably right that I can get a lot more timeing if I can get more water/alky in there.
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93 Cobra #4563 347ci 12.0@118 505rwhp 524tq
90 GT "Saleen Cobra" style convertible 347ci
67 GT "Eleanor" style coupe 347ci
Posts: 1425 | From: San Jose, CA | Registered: Jan 2003
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67stang
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Member # 549
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quote:
Originally posted by 2stangs69-91:
67stang when you going to have that beast to the track?
Working out the logistics. I can easily drive the car there, but I want a back up in the event it is not drivable on the return trip (I live 80 miles away from sac.)
Other than that... A/F still gets to 13.8:1 abouve 5000, i think the stock 5/16" fuel line is the issue. I want to address that and then let her rip.
Posts: 596 | Registered: Nov 2001
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2stangs69-91
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Member # 1951
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posted
I have learned the AAA has a 100 mile tow range LOL problem solved. Good luck.
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69 Mustang on hold
1991 LX hatch getting a make over
1994 F150 4X4 351
2006 Yamaha V-max 1200 Modded
Posts: 3711 | From: Redding | Registered: Oct 2002
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LAST302
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Member # 808
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posted
I would have to say no.
Posts: 1147 | From: Disco Bay | Registered: Jan 2002
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