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Author
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Topic: 11:1 compression with ca gas?
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Mean2001GT
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Member # 1750
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posted
 
 
i'm building up my 2001gt and i was curious if anyone here has 11:1 compression and is able to get away with pump gas after a good tune?
--chris
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--Silver 2001 GT--
13.020 @ 110.46
340.2 rwhp
339.8 rwtq
Posts: 158 | From: San Ramon, CA | Registered: Aug 2002
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93mustangt
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Member # 680
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posted
One of my buddies runs 10.7/1 compression with his 351. He runs on 91 pump gas and goes low 11's
Posts: 543 | From: Orange county, Ca | Registered: Dec 2001
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66 AC COBRA
Nitrous King
Member # 904
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posted
mustanggt5091 from this board
has a 11.25:1 357w that is damn fast using 91 pump gas
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FFR AC Cobra
72 Vega - WCHRA Extreme 10.5
Posts: 6280 | From: Winters | Registered: Feb 2002
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Mean2001GT
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Member # 1750
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posted
does it matter that i have a 4.6 2v and has has a pushrod engine?
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--Silver 2001 GT--
13.020 @ 110.46
340.2 rwhp
339.8 rwtq
Posts: 158 | From: San Ramon, CA | Registered: Aug 2002
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wilit
Mustang Messiah
Member # 3367
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posted
It all depends on the tune. If you want to run that high of compression, you NEED to get it tuned properly. Sportbikes run all day on 91 octane fuel and 12:1 compression, but they're tuned correctly (there's other design factors at work there too). Cam profile also has a great deal to do with how much compression you can run as well.
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"If a man hasn't found something worth dying for, he isn't fit to live." - Martin Luther King Jr.
Posts: 4793 | From: 37.78514° North 122.40100° West | Registered: Oct 2003
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THE King Cobra
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Member # 2011
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posted
quote:
Originally posted by Mean2001GT:
does it matter that i have a 4.6 2v and has has a pushrod engine?
If its an HCI built block you'll be fine. ![[Big Grin]](biggrin.gif)
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RPM Racing Team
-96 Cobra. HCI MOTORSPORTS block
-More cops in the family = more write-offs
508 RWHP @10.0lbs @6100 RPM..wait till I hit 8K RPM's
Posts: 315 | From: Bay Area, CA | Registered: Oct 2002
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xchpstang
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Member # 1206
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posted
Camara90 was running an 11:1 347 on pump gas if I'm not mistaken.
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04 Cobra, K&N FIPK,
Posts: 239 | From: Turlock | Registered: Apr 2002
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mtbaughs
Road Racer
Member # 4052
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posted
I'd get the motor put together and just run it. If it pings than you know the motor requires higher than 91 with the higher level of compression. You can either run better gas at this point or tune the car with a chip to remove some timing. Yes this motor will function differently than the old pushrod style as the 2 and 4 valve cars run different timing values. Also of note if you do go with running this compression ratio it will be good for NOS but won't ever work with a blower depending on your future goals I'd look at that as well
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R.I.P. Charlie Bruno Dec 2001
Posts: 2019 | From: Boise, Idaho | Registered: Jan 2004
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mustanggt5091
All I need is.....
Member # 444
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posted
quote:
Originally posted by 66 AC COBRA:
mustanggt5091 from this board
has a 11.25:1 357w that is damn fast using 91 pump gas
close Eric, really close, 11.4:1 compression without any problems on 91 octane, camara90 had 10.5:1 ![[patriot]](graemlins/patriot.gif) Just keep in mind you will have to stay on top of your maitainence, IE spark plugs, cap-n-rotor, wires, etc...
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88 GT 357w (SOLD):(
06 Limited Edition R6 !!!!!
Posts: 2353 | From: Fairfield / Santa Rosa , Ca | Registered: Sep 2001
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