What gear for my old truck?

[whitetrash]

My 52 is pretty gutless on the low end and I'm fairly sure it's got some shallow gears. I'm thinking 4.10s but figured ild ask you guys.

It's a Chevy 350 with a 700r4 and leaf springs in the back.

Also how can I tell if it actually has a gm 10 bolt? It was swapped before I bought the truck so I wanna make sure I get the proper gear for the proper rear end. And before the smart ass answers yes it has 10 bolts holding the diff cover on.

["MrEd"]

3.73s period for the 700.

[Superwho]

In my 64, Im running the 700r4, I had 4.10s for a year, and it was just too much for the street, I really had to baby the throttle on any kind of damp day. I went to 3.73 and am completely happy. Best of both worlds. I run 275s on 15 inch ralleys in the rear

[Z06killinsbf]

Well, what size tire is on it? If you're running a 35" tire, 3.73's would be a horrible idea. We need a little more info (tire size, usage of truck, highway %, desired cruise RPM, power range of motor, etc..) to make an educated guess.

[Diabolic]

My OD ratio is .71 and I run a Mickey Thompson Sportsman rear tire that is 30" tall. I run 4.56's, and drive it at least 150-200 miles a week. This is a 93 F150.

[greenbullitt]

.73 for a 700 unless it has a ridiculus amount of tire

[Rreemo]

Same as above....the 700R4 has a crazy first gear (3.27 I believe?), and is already pretty short with 3.73's...if you jump to 4.10's it's probably going to annoy you.

[91CoupeMike]

My 72 c10 had 3:73s and it was fun. If it was wet, you could spin the tires for atleast 2 miles.

[whitetrash]

Well, what size tire is on it? If you're running a 35" tire, 3.73's would be a horrible idea. We need a little more info (tire size, usage of truck, highway %, desired cruise RPM, power range of motor, etc..) to make an educated guess.

It has 245/45/17s I'm not sure of exact height. It's just going to be an around town cruiser.

[Z06killinsbf]

OK, then I'd copy the other guys and say the 3.73's. But 3.42's if it was lighter.

[greenbullitt]

It has 245/45/17s I'm not sure of exact height. It's just going to be an around town cruiser.

yea, .73 is fine

[TexasT]

Same as above....the 700R4 has a crazy first gear (3.27 I believe?), and is already pretty short with 3.73's...if you jump to 4.10's it's probably going to annoy you.

3.06 first gear on a 700r4/4L60e.

Those 245/45-17 I would guess to be around 27" tall. I don't see why you need 3.73 but that will get you moving. I would think 3.42 or 3.55 would be plenty. My 'burb does pretty good with the 3.42. You might find a set under one at your local recycler.

[gip99gt]

3.42's...

[majorownage]

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