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24-06-2011, 03:57 PM
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OCD keeps me busy...
Join Date: Jan 2007
Location: Melbourne
Posts: 944
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Hey all,
I'm looking for advice on which diff ratio to go with that will have my XE ute very streetable (city and highway) and still be able to break into the 10's. The setup so far is a C6 (2.46/1.46/1), 2200rpm hi-stall, 9" LSD 3:1, 275/60/15's and engine RPM @ 6000 (max). From memory the ute is around 3300lbs. I want to be able to keep engine revs at or under 2500rpm on the highway, using simple online calculators I can do with 3.5:1 ratio's but will I be able to get out of the hole quick enough to get into the 10's? |
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26-06-2011, 09:33 PM
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FF.Com.Au Hardcore
Join Date: Dec 2009
Posts: 905
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. 2200rpm convertor + 3.5's wont do it . You might get away with the 3.5's on a short tyre , 25-26 inch slick , but you would be needing at least 3500-4000rpm convertor to really punch out of the whole .
What power is the car making ? Aspirated or F/I ? Torque figures @ rpm ?
__________________
1998 AU VCT Ghia - Stock as a rock - Wifes car 1991 Toyota Soarer TT - 11.72 @ 116.7mph 2004 Ford Escape XLT V6 - Family Ride . |
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27-06-2011, 06:00 AM
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#3 | ||
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OCD keeps me busy...
Join Date: Jan 2007
Location: Melbourne
Posts: 944
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Thanks dieseltrain - yeah 28's are a bit of an ask - don't want to go too high with the converter, it needs to be streetable... and not break!
Motor is about to get new heads, cam, manifold - with hopes of around 500-550hp and a mountain of torque. |
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27-06-2011, 08:41 AM
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#4 | ||
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FF.Com.Au Hardcore
Join Date: Sep 2006
Location: TAS
Posts: 2,551
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I agree with the above - your stall is too low and the diff ratio wrong for that kind of time down the strip. You are asking for the best of both worlds (street and strip), and it is unlikely to happen. You might want to look at a bit of NOS to get you out of the hole quicker and into the right rev range. A 100hp shot should be enough
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XA coupe 8.8sec @ 150mph http://www.fordforums.com.au/showthr...coupe+drag+car BA GT-P for the shed Mustang GT for the other half E3 chubsport - fully fat (and slow), sitting there waiting for me to get sick of it and sell it. BA XR6T for a daily NT Pajero for the bush XB 4 door project- swallows a BF xr6 turbo My dad is a generous bloke. He gave away his dead car batteries free of charge.... |
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27-06-2011, 08:57 AM
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#5 | ||
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OCD keeps me busy...
Join Date: Jan 2007
Location: Melbourne
Posts: 944
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Yeah, I've definitely taken on-board the advice above. Will be looking at a 3000 stall to start with, and going a smaller strip tyre.
A gear vendors overdrive unit is another option I'm considering... Appreciate the input guys. |
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27-06-2011, 04:29 PM
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#6 | ||
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Performance moderator
 
Join Date: Feb 2005
Location: St Clair..N.S.W
Posts: 14,875
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Possibly get away with turbo and run lower rpm ???
__________________
Real cars are not driven by front wheels,real cars lift them!!... BABYS ARE BOTTLE FED, REAL MEN GET BLOWN. Don't be afraid to try something new. Remember, amateurs built the Ark...Professionals built the Titanic! Dart 330ci block turbo black pearl EBXR8 482 rwkw.. Daily driver GTE FG.. Projects http://www.fordforums.com.au/showthread.php?t=107711 http://www.fordforums.com.au/showthr...8+turbo&page=4 |
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27-06-2011, 07:40 PM
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#7 | ||
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FF.Com.Au Hardcore
Join Date: Dec 2009
Posts: 905
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Turbo + Big Block = , easy
 Mate of mine just finished his TT 426 wedge motor in his XB coupe . Makes a measly 500rwhp @ 10psi @ only 5500rpm . Motor will be retuned on 20psi and revved to 6500rpm once its got a few more km's on it ... Talk about TORQUE monster though !!! Crazy !
__________________
1998 AU VCT Ghia - Stock as a rock - Wifes car 1991 Toyota Soarer TT - 11.72 @ 116.7mph 2004 Ford Escape XLT V6 - Family Ride . |
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27-06-2011, 11:40 PM
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#8 | ||
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It's simple, more CUBES!
Join Date: May 2006
Location: Adelaide
Posts: 795
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Recently ran 10.91 @ 130 with 3000 stall, 3.89's and 28in tyres. crossing the line at 6200rpm in a 3900lb car.
Last edited by bbcoupe; 27-06-2011 at 11:41 PM. Reason: addition |
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28-06-2011, 10:09 PM
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#9 | ||
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Regular Member
Join Date: Jul 2006
Location: Perth
Posts: 164
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My street Capri has a 2800 rpm convertor, C4 auto, 24.5 tyre and 3.5 diff head crosses the line at just on six thousand rpm, best time 11.07, 120 mph. 350 rear wheel horsepower. It weighs approx 1170kgs though.
Streetability was paramount. We could up the power but do not wish to put a roll cage in.
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66 Mustang pb 10.13 70 Capri V8 pb 11.07 70 Mustang pb 8.34 all SBF naturally aspirated |
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28-06-2011, 10:23 PM
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#10 | ||
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Regular Member
Join Date: Jan 2009
Location: Perth
Posts: 197
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Bigger stall, sniff of gas, and 4:11's
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1972 XAGT Falcon Sedan in Red Pepper  2006 Ford ZC Escape XLT  2009 FPV GS Build # 105 in Ego 
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Gearing for street and strip
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