8.1 Engine Mods

Adger Smith · 03-09-2018, 06:21 AM

Yes, Ed mine has the Allison 1000 Trans.
I read an article about "Limp Mode" in the transmission if you modify the engine and the two computers don't communicate.

killintime6968 · 03-09-2018, 10:20 PM

Ed, do you have a tune setup for a 7.4 chev in a 2000 1 ton dually auto. The fuel mileage when towing is brutal. Your always looking for gas station.

Rsmith38 · 03-11-2018, 09:23 AM

My 96 Crew cab 7.4 auto towing a 10K trailer gets 8 - 9 MPG at 65 MPH
Is that the range you get?

Ed Wright · 03-11-2018, 04:38 PM

We sold our motorhome, if I get to race again I will be back to towing with my '99 7.4L Suburban. If I don't run much over 65, it gets 8 to 10, depending on hills & head winds.
Oklahoma has a 75 MPh speed limit on it's turnpikes (lots of toll roads in this crap hole state) mileage falls off a cliff @ 75/80. My 454" tows easier on much less fuel at 60/65.

killintime6968 · 03-11-2018, 04:50 PM

My truck gets 6 to 8mpg on a good day towing @ 60mph

Tom Meyer · 03-11-2018, 07:03 PM

ED could you PM your address and turn around time. Thanks Tom

03-09-2018, 06:21 AM	#1
Adger Smith VIP Member Join Date: Dec 2001 Location: Texarkana Ark/TX Posts: 2,446 Likes: 575 Liked 880 Times in 311 Posts	Re: 8.1 Engine Mods Yes, Ed mine has the Allison 1000 Trans. I read an article about "Limp Mode" in the transmission if you modify the engine and the two computers don't communicate. __________________ Adger Smith (Former SS)

03-09-2018, 10:20 PM	#2
killintime6968 Member Join Date: Oct 2009 Location: Whitecourt,Alberta,Canada Posts: 236 Likes: 4,685 Liked 91 Times in 29 Posts	Re: 8.1 Engine Mods Ed, do you have a tune setup for a 7.4 chev in a 2000 1 ton dually auto. The fuel mileage when towing is brutal. Your always looking for gas station. __________________ Bruce Cameron 68 Nova 396 E/S 68 Camaro SS/? ex Checkmate Modified

03-11-2018, 09:23 AM	#3
Rsmith38 Member Join Date: Mar 2011 Posts: 186 Likes: 0 Liked 28 Times in 15 Posts	Re: 8.1 Engine Mods My 96 Crew cab 7.4 auto towing a 10K trailer gets 8 - 9 MPG at 65 MPH Is that the range you get?

03-11-2018, 04:38 PM	#4
Ed Wright Veteran Member Join Date: Mar 2005 Location: Sand Springs, OK Posts: 8,132 Likes: 896 Liked 390 Times in 170 Posts	Re: 8.1 Engine Mods We sold our motorhome, if I get to race again I will be back to towing with my '99 7.4L Suburban. If I don't run much over 65, it gets 8 to 10, depending on hills & head winds. Oklahoma has a 75 MPh speed limit on it's turnpikes (lots of toll roads in this crap hole state) mileage falls off a cliff @ 75/80. My 454" tows easier on much less fuel at 60/65. __________________ Ed Wright 4156 SS/JA

03-11-2018, 04:50 PM	#5
killintime6968 Member Join Date: Oct 2009 Location: Whitecourt,Alberta,Canada Posts: 236 Likes: 4,685 Liked 91 Times in 29 Posts	Re: 8.1 Engine Mods My truck gets 6 to 8mpg on a good day towing @ 60mph __________________ Bruce Cameron 68 Nova 396 E/S 68 Camaro SS/? ex Checkmate Modified

03-11-2018, 07:03 PM	#6
Tom Meyer Senior Member Join Date: Aug 2003 Location: Pierce NE Posts: 936 Likes: 78 Liked 354 Times in 120 Posts	Re: 8.1 Engine Mods ED could you PM your address and turn around time. Thanks Tom __________________ Tom Meyer 5240 SS Stock ???