Hi,
I need to replace the side and spider gears in my '72 Valiants rear end and while I am at it I may swap out the 2.76 in favor of the 3.23's. The car is a daily driver around town, not too much highway use and I am not worried about gas mileage. The only improvements I plan to do is front disc brakes, sway bars for and aft, electronic ignition, larger exhaust and possibly the rear gear swap. Will this be a good combo for around town, snappy performance with the a904g tranny? Thanks, Nico

Yep, an A-body with 225 + 904 + 3.23 + decent-size tires (I like P205/70R14) makes a nice combo.

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

Just for reference I am running a 3.55:1 gear with 26.1" tire (235-60-15???) and turning 3600rpm on the highway at 70mph. I am changing my gear to the 2.94:1 on Wedensday.

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67Cuda,FAST EZEFI,340cu,CR=10.25,RollerCam&Rocker (XR268HR,#20-810-9)(#1622-16)(EddyRPM#60779,#7576), (MSD6AL,#6425) A904, GearVendorsOD, 8 1/4,3.55:1, ClassicAir

You must have a ton of torque converter slip or an inaccurate tachometer, maybe both. 3.55 gear, 26.1" tire should be 3200 RPM at 70 MPH with no slip. 2.94 gear should be 2650 RPM. The numerically lower gear will increase torque converter slippage too.

I just reread your signature. If your torque converter stall is 3200 your gear change will put you below the stall point for freeway cruising. This will put a lot of heat into the trans fluid and make for poor economy.

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Joshua

My 3:23's cruise at 35-3600 @ 80-82mph effortlessly

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'72 Duster 198 stock cam, 3:23's

93 D350 Cummins THD Maxfuel 35mpg parts to hit 400hp+ Suncoast Cat2 A518, converter DDP Stage III injectors 62/64 HX35, 3 piece manifold, 4" Diamond Eye, Gear Venders OD. Stage I street/tow PDD head on order.

The 3.23's are much more fun around town then my old 2.76's. I run 235/60r14's (24"tall) and turn 3100rpm @70 mph, while getting 17.8mpg on the highway.

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I can "live" with 3.23 gearing as long as I use a real tall tire in back.
In fact, this makes for a good "dual purpose" combo, take the car out to the dragstrip and swap-on some short tires and is gets off the line pretty good.

The only downside to this plan is that the tall tire has lots of sidewall flex, this leads to less then ideal handling out on the highway.
What I need are some small bolt pattern 16 or 17 inch rims.
DD

What about some 22s ?

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Ed
64 Valiant 225 / 904 / 42:1 manual steering / 9" drum brakes

I just found some OEM 3.07s hopfully and happy medium between the 3.21 and the 2.94s.

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67Cuda,FAST EZEFI,340cu,CR=10.25,RollerCam&Rocker (XR268HR,#20-810-9)(#1622-16)(EddyRPM#60779,#7576), (MSD6AL,#6425) A904, GearVendorsOD, 8 1/4,3.55:1, ClassicAir

Fo' Shizzel!

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'72 Duster 198 stock cam, 3:23's

93 D350 Cummins THD Maxfuel 35mpg parts to hit 400hp+ Suncoast Cat2 A518, converter DDP Stage III injectors 62/64 HX35, 3 piece manifold, 4" Diamond Eye, Gear Venders OD. Stage I street/tow PDD head on order.

Let us know how that works out for you. My set-up originally was a 170/904/3.23 but I swapped in a stock 225 aluminum block. It seems to have an abundance of low end torque without the need for a lot of rpm. I'm thinking the 2.76 would be fine especially with the lower rpm you get at cruise.

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'63 Valiant V200 Convertible
225 Aluminum Block

Brennan-3600 RPM
Rug-Trucker-35-3600 RPM
70VALIANT'-3100 RPM

Have all you guys had some sort of engine work done?
I feel like my engine is screaming on approach to 3000!
Am I overlooking something?
P195/75-14 Tires and 3.21 Gears (or maybe it was 3.23, I don't recall off the top of my head, either way though)

It takes some getting used to. And yes. See signature for engine work.

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67Cuda,FAST EZEFI,340cu,CR=10.25,RollerCam&Rocker (XR268HR,#20-810-9)(#1622-16)(EddyRPM#60779,#7576), (MSD6AL,#6425) A904, GearVendorsOD, 8 1/4,3.55:1, ClassicAir

When I am shifting my automatic I shift from first to second at 5400rpm and second to third at 5000rpm. yes it has been highly modified check out my sig line.

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What a bunch of babies. I have 4.56 gears and 215/70-15 tires, and an 8 inch converter. It would be nice if I could cruise at only 3,000rpm

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Charrlie_S
65 Valiant 100 2dr post 170 turbo
66 Valiant Signet 170 nitrous
64 Valiant Signet
64 Valiant 4dr 170
64 Valiant 4dr 225