lost power with my new set up - Pirate4x4.Com : 4x4 and Off-Road Forum

Brians70 · 05-11-2005, 06:06 PM

5.0 mustang motor C6 to 205 4.88 in axles 40" MTR since install the engine just bogs down when up against an obstacle. Any hints on how to cure this problem?

broncolou · 05-11-2005, 07:45 PM

Not enough gear and maybe torque convertor too low a stall . A c6 will eat about 20hp more than a c4 . At least 1700 is nice in a rockcrawler and maybe more if you dont do gears. Spend it now or spend it later ,

BigWhiteStroke · 05-12-2005, 12:00 AM

Does the motor have good oil pressure?

BUZZISCRAZY2 · 05-12-2005, 05:33 AM

What was the motor before it ? Is the new 5.0 stock ?
What vehicle and weight?

Broncoo · 05-12-2005, 08:48 PM

anyone know what the stock stall is for a SB c6 converter

Brians70 · 05-14-2005, 08:46 AM

I have good oil pressure and this is the stock 93 5.0. I had this motor in with a 435 dana 20 with 4.11 gears and had power to spare. Now I can't even roll up onto my trailer. I had the tranny built with the lowest planetary gears and rebuilt the 205. ????? could it be I'm not geared low enough with the 205? Thanks for your help

NE-RokToy · 05-14-2005, 10:21 AM

how is the power once you get the tires moving? If its just lacking off the line power but has good power when rolling or if you break the tires loose I would say a looser torque converter will help alot.

Any idea of the specs on your current converter?

your gearing is less then great but should be able to get around better then what your describing.

GubNi · 05-14-2005, 11:20 AM

Sounds like something is wrong in the trans. The tires are a little big for 4.88's and a small block. Have you ran codes on the engine? Might be something simple like a clogged fuel filter.

ImNotRight · 05-14-2005, 06:08 PM

Mustang engine as in ford eec-iv fuel injected?

If so, I take it you don't have a VSS hooked up then?

BUZZISCRAZY2 · 05-14-2005, 06:14 PM

Quote:

Originally Posted by GubNi

Sounds like something is wrong in the trans. The tires are a little big for 4.88's and a small block.

Sounds perfect to me

05-11-2005, 06:06 PM	#1 (permalink)
Brians70 Registered User Join Date: Feb 2004 Member # 27187 Location: Colorado Posts: 79	lost power with my new set up 5.0 mustang motor C6 to 205 4.88 in axles 40" MTR since install the engine just bogs down when up against an obstacle. Any hints on how to cure this problem?

05-11-2005, 07:45 PM	#2 (permalink)
broncolou Rock God Join Date: Jan 2004 Member # 26750 Location: Parkton MD Posts: 2,164	Not enough gear and maybe torque convertor too low a stall . A c6 will eat about 20hp more than a c4 . At least 1700 is nice in a rockcrawler and maybe more if you dont do gears. Spend it now or spend it later , __________________ Lou EB Buggy #231 RCrocks/Line Mtn www.EXTREMEAXLESALES.COM WWW.INTERCOTIRE.COM WWW.RC4X4.ORG WWW.earlybroncos.com www.stickeylee.com www.bilstein.com

05-12-2005, 05:33 AM	#4 (permalink)
BUZZISCRAZY2 Registered User Join Date: Feb 2003 Member # 17399 Location: oxford wi Posts: 1,530	What was the motor before it ? Is the new 5.0 stock ? What vehicle and weight? __________________ [FONT="Comic Sans MS"]Catch your Dreams, before they slip away........[/FONT] [FONT="Arial Black"]Current vehicles[/FONT] 67 Bronco 69 Bronco 81 Bronco 81 Bronco 75 F-250 (highboy) 77 F150 78 F150 70 F100 (2wd) 93 F350 95 F350 (Blown Crazy") 95 F350 ("Crazy Too") 87 Ranger (2wd) 00 Excursion 04 Navigator

05-12-2005, 08:48 PM	#5 (permalink)
Broncoo Registered User Join Date: Jan 2003 Member # 16545 Location: okanagan B.C Canada Posts: 253	anyone know what the stock stall is for a SB c6 converter __________________ canadian gunnut

05-14-2005, 10:21 AM	#7 (permalink)
NE-RokToy Registered User Join Date: Feb 2000 Member # 62 Location: Omaha NE Posts: 5,992	how is the power once you get the tires moving? If its just lacking off the line power but has good power when rolling or if you break the tires loose I would say a looser torque converter will help alot. Any idea of the specs on your current converter? your gearing is less then great but should be able to get around better then what your describing. __________________ Jeff Neves

05-12-2005, 12:00 AM	#3 (permalink)
BigWhiteStroke Registered User Join Date: Feb 2005 Member # 43613 Location: West Lafayette, In Posts: 327	Does the motor have good oil pressure?

05-14-2005, 08:46 AM	#6 (permalink)
Brians70 Registered User Join Date: Feb 2004 Member # 27187 Location: Colorado Posts: 79	I have good oil pressure and this is the stock 93 5.0. I had this motor in with a 435 dana 20 with 4.11 gears and had power to spare. Now I can't even roll up onto my trailer. I had the tranny built with the lowest planetary gears and rebuilt the 205. ????? could it be I'm not geared low enough with the 205? Thanks for your help

05-14-2005, 11:20 AM	#8 (permalink)
GubNi Rock God Join Date: Jan 2004 Member # 25927 Location: Northeast TN Posts: 2,170	Sounds like something is wrong in the trans. The tires are a little big for 4.88's and a small block. Have you ran codes on the engine? Might be something simple like a clogged fuel filter. __________________ Dana 60 or 14 bolt disk brake kits $315 shipped --> click here Dana 70 kits $300 --> click here . . Sterling 10.25 kits $390 --> click here Dana 60 front 3/4 ton kits $350--> click here

05-14-2005, 06:08 PM	#9 (permalink)
ImNotRight Registered User Join Date: May 2003 Member # 19666 Location: Napa, CA transplant. Posts: 1,207	Mustang engine as in ford eec-iv fuel injected? If so, I take it you don't have a VSS hooked up then? __________________ QUOTE=TheHawes;15027873 If it wasn't for pussy, I'd hunt them fucking things.

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