302 4:56 gears and 35's

BLUE72 · May 25, 2007

Who is running this combo and how do you use your Bronco? Daily Driver, 100% off road, or 50/50?

ProjectBronco70 · May 25, 2007

I am running that exact combination and love it. I use my bronco for 65% off road and 35% on road.

BLUE72 · May 25, 2007

what tranny are you running and how is it a freeway speeds?

rob wilson · May 25, 2007

I'm running the same, with a NP 435. It's running 3000 RPM at 68 MPH so I don't do much expressway driving. Otherwise it's great. I'll be upgrading to 37" tires soon and that will help a bit on the road.

DonsBolt · May 25, 2007

I have this combo with a NV 3550

Great low gear, and a overdrive, best of all worlds.

Mine is a 90% street truck

Sabas · May 25, 2007

I have this combo with a C4. weekend driver & I drive it to all trails usually 70-200 Miles one way. Runs around 3100 rpm on freeway doing 65 mph.
Sabas

ztoolman44 · May 25, 2007

DonsBolt said:
I have this combo with a NV 3550

Great low gear, and a overdrive, best of all worlds.

Mine is a 90% street truck

I'm looking at something similar. What RPM are you running on the freeway? How's the mileage? Is yours EFI? Thanks

DonsBolt · May 25, 2007

ztoolman44 said:
I'm looking at something similar. What RPM are you running on the freeway? How's the mileage? Is yours EFI? Thanks

I am running a carb
and at 65 mph I am running around 2500 rpms
just getting a overdrive increased my millage 3-5 mpg

I never really did a before and after comparison, but I don't fill my tank as often, and can go further on a tank of gas

bigmuddy · May 25, 2007

I run the same with the ZF tranny, really low granny gear and a healthy overdrive not to mention it's a heavy duty tranny. Love it! And it was relatively cheap to install to boot as compared to other overdrives.

Ben

69Sport · May 26, 2007

302/4:56's/35's/nv3550

I am running this set up with the nv3550 like Donsbolt and I love it. I only have about 200 miles on the set up after a frame up restore but it is great. I got on the highway the other day for the first time and got it up to speed and it was running great in 4th and I still had 5th to go. I think I was pulling about 2300 rpm's at 65. My speedo works but I have not had a chance to run it next to another vehical to see how far the 35's set it off with the stock speedo gear. I am glad that I listen to some of the guys on the board that are running the nv3550 because it turned out better than I thought. 69sport

BLUE72 · May 26, 2007

What is a safe range for RPM's at 70-75 mph with a 302?

broncnaz · May 27, 2007

Depends on the condition of your engine. I run 2800 rpm all day long with my 302 and dont worry about it. A Stock engine will usually redline around 6000 rpm so it will take the RPM's but your mileage will suffer above 2500 rpm if you figure than in the 70's the speed limit was only about 55 mph and tire size was on about 28in with the gearing that was standard for the time 2500 rpm was the norm and most engines were built to run the best in that range.

OsideDave · May 27, 2007

I have a 351W/C4/4:56's and 33's and I really don't like to drive it very far on the freeway anymore. 3200 rpms at 60 or so and everyone is flying by me. I am thinking of lifting a going w/ 35s and someday an OD.

4x4man514 · May 27, 2007

i have 37s 456 and a zf. i love the setup. about 2100 rpms at 65. gas mil is terrible though. about 12.

Daddy4zack · May 28, 2007

302/T-D20/Np435/4.56/35"BFG's.. Love it.. 2500 @ 60mph. will also be going to 36-37" soon.. 80% street..
Aaron

4x4man514 · May 28, 2007

what kind of mileage do most of yall get?

302 4:56 gears and 35's

BLUE72

Full Member

ProjectBronco70

Full Member

BLUE72

Full Member

rob wilson

Sr. Member

DonsBolt

Bronco Guru

Sabas

Sr. Member

ztoolman44

Full Member

DonsBolt

Bronco Guru

bigmuddy

Bronco Guru

69Sport

Sr. Member

BLUE72

Full Member

broncnaz

Bronco Guru

OsideDave

Sr. Member

4x4man514

Bronco Guru

Daddy4zack

Sr. Member

4x4man514

Bronco Guru

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