3:73 Gears ok street and strip ?

[Bigrig]

Building 86 chevy 2wd longbed with an Fully built Olds 455 roller rocker, aluminum heads, aluminum intake, long tube headers , holly demon 750 cfm carb and a Turbo 400 stage 3 shift kit and 3000 stall.  stock 15" wheels .  3:73 gears .  The truck is not put together yet and I am wondering if the 3:73 are going to be ok for short road trips and freeway driving without wrapping up the RPM's too high ?  Anyone else have a similar set up or advice

[Rattler12]

I've got 3:73's in my 83 but they're behind a NV 4500 5 spd manual trans with .73 OD. The combo works out well. With the 400 and it's 1:1 final ratio you're going to be 33% higher in the rev range at hwy speeds with street tires. While my 454 is cruising at around 1950 rpm your 455 will be at 2650 or so. You'll need deeper wallet and a bigger gas tank.......

[Irish_Alley]

rattler, not to hijack or anything but whats your MPGs?

[SkinnyG]

I went from 3.07 to 3.73 on my daily-driver C10, and I'm running about 3000rpm at 60mph or so.  I noticed a teeny improvement in fuel economy and my guess is because 1) the cam is at a happier rpm and 2) I'm now cruising above the torque converter's stall speed.

[Rattler12]

rattler, not to hijack or anything but whats your MPGs?

10 mpg no matter what.....

[Irish_Alley]

is that before the nv4500?

[Rattler12]

is that before the nv4500?

After......but it runs like a scalded dog......so there's that

[Irish_Alley]

I know my 91 v3500 crew cab with a 350 got 12 with the 4l80e and 4.10  Now she can get 16 with the Cummins