How bad is your gas mileage?

[renaissance man]

Originally Posted by HTM101

The answer to your question is another question. Do you think you want a different rear ratio?

A 3.73 will bring your 80 mph rpm to approx. 4,050, not a big reduction. However, the 3.55 may be a good option.

@HTM101 I will have to consider a 3.55. I love the sound of this engine at 4000-5000 rpm. I think I did enough due diligence with putting in the ISKY Racing Cam and other components to handle this. The 4-Speed Toploader was a must for me with it's 1:1 4th gear. I was mainly concerned with engine stress over mileage. Like I said, I hope I did enough to enjoy it at these higher rpms? The 4.10 rear, from what I've read about it is very desirable. I will just keep up maintenance and upgrades in the future. It's just too glorious sounding at 80mph!

[HTM101]

I have a big block with a wide ratio Toploader. My rear ratio is 3.70 and is adequate for where and how I drive. 60 mph is 3,000 rpm, 80 is 4,000.

I rarely drive on an interstate and took that into consideration when I installed the Toploader. However, if I were on an interstate a lot more, I'd keep the 3.70 rear and install a 5-speed.

I average 7 mpg.

[IMG][/IMG]