First trip and MPG with od
Thread Starter
Racer
Joined: Feb 2002
Posts: 272
Likes: 1
From: MOBILE ALA
First trip and MPG with od
The 200-4r is in and working fine so I thought it was time to stretch it`s legs.Yesterday I saw the Florida lottery was up to $100 million and I could sure use the money to support my Corvette habit.Round trip was 154 miles,most on the interstate.When I first built my engine 14mpg with3.08 gears was normal.Went to 3.73`s and mpg was8-10.Now with the od with average speed of 80,mpg was 17.What I really like is the rpm at 90 is only 2800 :D .That is better mpg than my 02 Xterra se-sc and it has 383ci.Who says you can`t have it both ways! :thumbs:
Melting Slicks
Joined: Aug 2000
Posts: 2,310
Likes: 1
Re: First trip and MPG with od (J75)
:cool:
That's an amazing difference between the 3.73 and the 3.08.
I've been told that the 2004r has pretty much the same gearing for the first three gears (maybe a little lower for 1st) as the TH350. Would you say that the first three gears feel the same?
That's an amazing difference between the 3.73 and the 3.08.
I've been told that the 2004r has pretty much the same gearing for the first three gears (maybe a little lower for 1st) as the TH350. Would you say that the first three gears feel the same?
Race Director
Joined: Apr 1999
Posts: 11,520
Likes: 13
From: CORVETTE 77 385 C.I. TEXAS
Re: First trip and MPG with od (jerryp58)
... and it has 383ci.Who says you can`t have it both ways! :thumbs:
Yes, it's just a matter of proper design to get what you want.
...
I've been told that the 2004r has pretty much the same gearing for the first three gears (maybe a little lower for 1st) as the TH350. ...
I've been told that the 2004r has pretty much the same gearing for the first three gears (maybe a little lower for 1st) as the TH350. ...
The 200R4 has significantly lower gearing for 1st- 2.74 vs. 2.52 so w/ 3.70 it's similiar to a TH350 w/ 4.11.
Safety Car
Joined: Jan 2001
Posts: 4,660
Likes: 3
From: South Central Louisiana
St. Jude Contributor
Re: First trip and MPG with od (The Money Pit)
You must need a new carb,I was getting 17mpg with 3.70 gears with the 355 and the TH350 trans. Now it's more like 14mpg with the 406.
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Thread Starter
Racer
Joined: Feb 2002
Posts: 272
Likes: 1
From: MOBILE ALA
Re: First trip and MPG with od (jerryp58)
I went from a th400,I can say for a fact 1st gear is much lower with the200.It will smoke the tires with ease and I wasn`t even trying.Yes the 373`s killed my mpg but now the od makes up for it.
Race Director
Joined: Feb 1999
Posts: 19,659
Likes: 34
From: Lenoir City Tennessee
Ci 6, 8 & 10 Veteran
St. Jude Donor '05-'06-'07-'08-'09-'10-'11-'12-'13-'14-'15
Re: First trip and MPG with od (MIKER)
You OD guys are killing me. How much is this one gonna cost me. :sad: Gotta be a manual though. :cry
Race Director
Joined: Jun 2000
Posts: 10,047
Likes: 675
From: FL
Re: First trip and MPG with od (Eddie 96)
Gotta love the OD. Right now I am running a Tremec 3550 backing my 350. About 370 HP (DD2000) with XE262 cam, RPM heads, true duals, and a Lars-tuned Q-jet.
Drove the car cross country, 3.36 rear, 2000rpm=70 mph, got an honest 20 mpg. :D
Next on the mod list is fuel injection with a goal of 25mpg on the highway. :cheers:
Drove the car cross country, 3.36 rear, 2000rpm=70 mph, got an honest 20 mpg. :D
Next on the mod list is fuel injection with a goal of 25mpg on the highway. :cheers:
