[flyingn]

a beauty..

[muscle_collector]

I love red on red. very nice.

[Lloyd-TX]

Originally Posted by flyingn

a beauty..

NICE!

[Judge273]

Black vert..

[judger69]

Wonder how its going to do at Indy this weekend. I think its a Saturday car, so at least its during primetime !

One of 17. WOW !!

[The Boss]

Tom's car, he's not planning on it selling, not sure why he sent it.

[judger69]

Well now that's different. No way he can hold all that power with one wheel. I wonder if the original owner even considered that. You'd think the dealership salesman would have told him when ordering the car that it was going to need a posi.

[Diego]

I think a lot more cars were ordered without limited slip than we realize.

I can tell you just over 45% of 1970 Road Runners had it, and that vehicle was a pure performance car.

Sometimes there are stories like the buyer being told by the salesman that it was standard, but when the car arrives at the dealership, it appeared that the salesman was wrong.

[marxjunk]

Not ordered..by default..posi was an option not a required option

[Judge273]

I understand it wasn't a big deal to replace rear gears with a posi unit?

Factory gears were not what most buyers wanted was what I heard?.

My 71 GT-37 4M-22 455 HO wasn't a posi, but it had it with 3:73 gears?

[MikeNoun]

Originally Posted by Judge273

I understand it wasn't a big deal to replace rear gears with a posi unit?

Factory gears were not what most buyers wanted was what I heard?.

My 71 GT-37 4M-22 455 HO wasn't a posi, but it had it with 3:73 gears?

Factory gears are what most people wanted. It was rare to have a customer special order a car with specific axle ratio. Optional gear ratios were rare by 1971, usually for trailering or towing purposes. Factory GM rear ends are quiet (and warrantied), so unless it was the extremely rare case of a car being special ordered for drag racing, factory gears were selected.

Items that customers may go cheap on were wheels and/or radio because they may want to install aftermarket units.

One nice thing about 1969-1980 Trans Ams, they ALL had posi. Even those 185 hp, 2.41 or 2.56 geared cars from the mid-1970's, or the base 1979-1980 Trans Am with a 301 non-turbo, came with posi. The main reason Trans Ams were always a junkyard hunter's favorite because if they found a TA intact, it had a posi rear end which fit Camaros, Novas, etc.

Mike

[Judge273]

Thanks Jack and Mike,

The 3:73 gears were Pontiac gears and posi. Maybe they wanted those and couldn't get factory. Not sure that car was for cruising or such. Heard it was a rum runner or something like that.

['ol Pinion head]

Originally Posted by Judge273

I understand it wasn't a big deal to replace rear gears with a posi unit?

Factory gears were not what most buyers wanted was what I heard?.

My 71 GT-37 4M-22 455 HO wasn't a posi, but it had it with 3:73 gears?

A huge percentage of original buyers of the more street driven '71-72 455HO cars stuck with the gear ratio that their cars were delivered with. I seldom run across different ratio gears having been setup up in these, esp, in cars that were driven quite a bit.

On some of the '71 and '72 HO cars, esp, the lightweight '71 233's, quite a few were raced in stock or modified production class with tall slicks, auto cars with 3500-400 stall converters. Gears typically 4.10's or 4.33's. I set up a set of thin Richmond 3.73's in the Monk King T-37 nearly 20 years ago. In previous modified production racing in the '70's, it had ran 4.10's in combination with SR '70 RA4 heads, believe a General kinetics cam. The white/ jade green bench interior '72 GTO originally owned by Truman Fiels also is a really low mile mainly raced and nearly as light as it gets ffor a '72 HO A body. it's another one that had 4.10's and 4.33's installed over the course of its career.

On the 455 and 455HO Convertibles, ESP, T400 cars, not getting a posi, that was very common. money was spent elsewhere. I've set up now nearly a half dozen Eaton posis in '70 455 GTO auto converts. All but one of them had factory 3.07 peglegs in them. There seems to be some belief amongst long time muscle car guys that the 201 '65 Z16 Chevelles got along fine without an Eaton posi being factory installed. Have heard that over and over with the reason being the Z16's use of the HD boxed frame negated a lot of the need for the posi. not sure about that one, though it probably held true for those that were not going to be at the strip nearly every weekend with their new Z16 Chevelle.

[MikeNoun]

Originally Posted by 'ol Pinion head

There seems to be some belief amongst long time muscle car guys that the 201 '65 Z16 Chevelles got along fine without an Eaton posi being factory installed. Have heard that over and over with the reason being the Z16's use of the HD boxed frame negated a lot of the need for the posi. not sure about that one, though it probably held true for those that were not going to be at the strip nearly every weekend with their new Z16 Chevelle.

I've always wondered about the claim that there was no traction issues with the open rear end in 1965 Z16 Chevelles. Original road tests state that both tires spun, and traction was great, all due to a stabilizer bar mounted between the lower control arms.

If this stabilizer bar worked so well, I wonder why Chevy eventually went to posi?

1965 Chevelle Z16's only ran in the mid-high 14's, yet the publications that heralded this "wonderful advancement in traction" stated that the car was handicapped by not having a Limited Slip Differential. Go figure...

1965 GTO tri-power with 3.90 gears, 4-speed, and Safe-T-Track would still whip its butt.

[starlightblack]

Originally Posted by MikeNoun

I've always wondered about the claim that there was no traction issues with the open rear end in 1965 Z16 Chevelles. Original road tests state that both tires spun, and traction was great, all due to a stabilizer bar mounted between the lower control arms.

I would bet a bunch of dough that Chevrolet strong-armed that claim out of the magazines, "or we will pull our ad buy". Wouldn't be the first time a manufacturer wanted copy to read a certain way..."or else"

[Jack Peters]

3:73 would be dealer installed. 3:55's were the lowest from the factory w/455HO regardless of which A body it was ordered or came standard in.

[flyingn]

being into Ford too and seeing many marti reports Id venture a guess that more performance Fords(Torinos, Mustangs, etc) were not factory locking rear equipped. Wild guess Id say 65-70% of the ones left the factory with open rears

[judger69]

'71 judge 'vert no sale on Sat. at $220,000 ?

https://www.mecum.com/lot-detail/SC0...ble/Automatic/

[Judge273]

This one was a bit of a shocker....it was offered on PY awhile back too by original owner.

https://www.mecum.com/lot-detail/SC0...-IV/Automatic/



No sale at 110k?

[flyingn]

heres a beauty