Back from my 711 mile round trip. Gas Mileage - The 1947 - Present Chevrolet & GMC Truck Message Board Network

72chevyLWB · 06-09-2003, 09:52 PM

I took off on Saturday around 12:30 for Minneapolis Minnesota. On the highway going 65 I got 15.4 mpg. On the interstate going 80-100 I got 12.5 . This is with a .030 350, Vortec Heads, 218/218@.050 cam, Performer RPM Air Gap intake, Edelbrock 750 Carb, Hedman headers, 2 1/2 pipe, 700R4 with 2,200 stall, 3.73 gears and 26.5" tall tires and a 5.5" drop. I think its pretty good. Went the entire way and didn't have one problem at all. Got whooped at the show though, but who cares. The guy that won trailered his. I'll be back up there in July for the Car Craft Nationals. Next weekend is also another road trip to Brookins SD for another car show. Fun Fun Fun

I also got to meet Da Burb and Class of 69. Really nice guys to hang with.

weasel29gm · 06-09-2003, 10:14 PM

Thats great on the mileage, my setup is close to yours so I hope to get that kind of MPG'S. Is your 700R built or stock?

72chevyLWB · 06-09-2003, 10:18 PM

Fresh rebuild with a Transgo shift kit. Kicks you through the seat from 1st to 2nd and just shifts real tight for the rest of the gears. I love it. 5,000 miles on the tranny and I rod the crap out of it and its still like day 1

Project1970 · 06-10-2003, 02:00 AM

Sounds relatively similar to my setup (fresher engine, tho) and my mileage. Nice.

06-09-2003, 09:52 PM	#1
72chevyLWB Got 20's???? Join Date: Oct 2001 Location: Aberdeen SD Posts: 1,451	Back from my 711 mile round trip. Gas Mileage I took off on Saturday around 12:30 for Minneapolis Minnesota. On the highway going 65 I got 15.4 mpg. On the interstate going 80-100 I got 12.5 . This is with a .030 350, Vortec Heads, 218/218@.050 cam, Performer RPM Air Gap intake, Edelbrock 750 Carb, Hedman headers, 2 1/2 pipe, 700R4 with 2,200 stall, 3.73 gears and 26.5" tall tires and a 5.5" drop. I think its pretty good. Went the entire way and didn't have one problem at all. Got whooped at the show though, but who cares. The guy that won trailered his. I'll be back up there in July for the Car Craft Nationals. Next weekend is also another road trip to Brookins SD for another car show. Fun Fun Fun I also got to meet Da Burb and Class of 69. Really nice guys to hang with. __________________ 99 Silverado Ex-Cab 2wd, Bagged&WhippleCharged 02 Sierra Ex-Cab 4wd 2500 HD The 72 went down the road.

06-09-2003, 10:14 PM	#2
weasel29gm SLOW BUT SURE,BUT CLOSER Join Date: Feb 2002 Location: eleanor wv usa Posts: 3,099	Thats great on the mileage, my setup is close to yours so I hope to get that kind of MPG'S. Is your 700R built or stock? __________________ 69 C-10, OWNED 38YRS... 350 over 30, 350 Turbo, 3:73 Posi P/S, P/B Black with red and black int. ''LOVE THESE OLD ''TRUCKS.......

06-09-2003, 10:18 PM	#3
72chevyLWB Got 20's???? Join Date: Oct 2001 Location: Aberdeen SD Posts: 1,451	Fresh rebuild with a Transgo shift kit. Kicks you through the seat from 1st to 2nd and just shifts real tight for the rest of the gears. I love it. 5,000 miles on the tranny and I rod the crap out of it and its still like day 1 __________________ 99 Silverado Ex-Cab 2wd, Bagged&WhippleCharged 02 Sierra Ex-Cab 4wd 2500 HD The 72 went down the road.

06-10-2003, 02:00 AM	#4
Project1970 14.1 @ 96MPH Join Date: Jul 2001 Location: Mesa, AZ Posts: 2,811	Sounds relatively similar to my setup (fresher engine, tho) and my mileage. Nice. __________________ Project1970 - LS1 Swap Complete!

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