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It was vague on the source though, only that "A magazine road test delivered a 15.72 @88 mph with a zero to sixty mph dash in 7.7 seconds." That car could have been specially prepped, though.
The '74 GTO came standard with a 3-speed manual, with a 4-speed being optional. California models were stuck with the Turbo Hydramatic, which might have been optional elsewhere.
I wonder if 7.7 might have been the 4-speed, and under "optimal" weather conditions, and the 9.4 might have been an automatic, or a 3-speed? Would the 4-speed give you much advantage over a 3-speed, in acceleration?
**Edit...oops, just saw your later post, where you pretty much said just this...
Also see a beige VW Bug and green Olds 98.
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later parked on the side of the road, with a 4 sale sign, an unrestored (aka ratty) looking early 70s vintage Ford PU.
2020 Acura RDX tech SH-AWD, 2023 Maverick hybrid Lariat luxury package.
2025 Ram 1500 Laramie 4x4 / 2023 Mercedes EQE 350 4Matic / 2022 Icon I6L Golf Cart
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2015 Subaru Outback 3.6R / 2024 Kia Sportage Hybrid SX Prestige
It was being trailered behind a pickup truck.
2014 Malibu 2LT, 2015 Cruze 2LT,
2020 Acura RDX tech SH-AWD, 2023 Maverick hybrid Lariat luxury package.
You can buy these dirt cheap, around $15,000 for a presentable driver.
2025 Ram 1500 Laramie 4x4 / 2023 Mercedes EQE 350 4Matic / 2022 Icon I6L Golf Cart
Mine: 1995 318ti Club Sport-2020 C43-1996 Speed Triple Challenge Cup Replica
Wife's: 2021 Sahara 4xe
Son's: 2018 330i xDrive
2025 Ram 1500 Laramie 4x4 / 2023 Mercedes EQE 350 4Matic / 2022 Icon I6L Golf Cart
I think they are more like air suspension systems--they just get sick and throw up whenever they feel like it.
It's the "shop charges" that run up the bill.
Those mechanics go through tuxedos, like crazy!
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Those mechanics go through tuxedos, like crazy!
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Here's why it costs $8,000 and here's why nobody on a TV reality auto show is going to fix it using Yankee ingenuity
"The system contains two hydraulic circuits that operate in parallel for the brakes. One of the systems also powers the rear height control. Hydraulic fluid is stored in reservoirs on the left fender well. Lines carry the fluid to the hydraulic pumps, which are located in the center top of the engine (pumps are engine driven); under the carburetors or the fuel injection. High-pressure pipes carry the hydraulic fluid to the accumulators (which compress nitrogen gas) under the motor. From there excess fluid is returned to the reservoirs. Braided lines carry the high-pressure fluid to the distribution valve assembly located under the driver seat. A network of steel pipes carries hydraulic fluid to the calipers at each wheel and to the rear suspension and height control. The rear suspension contains height control valves, shocks, and gas springs that sit above the shocks in the trunk area.
All the pumps, valves, and moving parts are subject to failure. Calipers rust or leak. Gas springs and accumulators lose their gas charge. Metal lines rust and rubber hoses deteriorate invisibly. A system this complex can only be fully tested by trained people using special tools in a workshop
The fluid in these systems should be changed annually. Some owners question the need for this, when their cars are rarely driven. Here's why it needs to be done: The hydraulic pumps deliver fluid to accumulators where they compress nitrogen gas under very high pressure. The fluid is separated from the nitrogen by a rubber barrier, but it is inevitable that some nitrogen will make its way into the fluid. This forms bubbles, and bubbles in the fluid cause the brakes to pull and act erratically.
Any car that has been sitting a long time is sure to have "funny feeling" brakes for this reason The cure: Change the fluid annually or face a crushing repair bill.
2020 Acura RDX tech SH-AWD, 2023 Maverick hybrid Lariat luxury package.
2025 Ram 1500 Laramie 4x4 / 2023 Mercedes EQE 350 4Matic / 2022 Icon I6L Golf Cart
The fluid in these systems should be changed annually. Some owners question the need for this, when their cars are rarely driven.
"Crushing repair bill" for a deferred brake job? I can see that.
My mechanic replaced the entire braking system on my '57 DeSoto. In back, he replaced the whole rear end with one from a '70-74 E-body (Barracuda/Challenger). The DeSoto and E-body both used an 8 3/4 rear, and the spring perch is almost identical...close enough for government work, I guess! Anyway, doing this gives the car a "proper" parking brake that works on the rear drums, rather than trying to clamp down on the driveshaft. It also does away with those rear brake drums that you need a special wheel puller to get on and off.
Up front, the drum brakes were replaced with Mopar M-body (Diplomat/Gran Fury) police car disc brakes. At first, I thought that might be a little inadequate...putting brakes from what was once considered a compact onto a 50's full-sizer...but then I remembered that the M-body copcar brakes are the same as what's on my '79 New Yorker...and I believe R-bodies with the 360 had bigger brakes than the ones with the slant six or 318. So, I'm sure if it's enough brake for a downsized, yet still substantial late 70's full-sizer, I'm sure it's enough for the DeSoto.
He also put in a dual master cylinder. Originally, he said it was going to be the same part they use for a Corvette, because of some kind of fit/clearance issues, but I think it ended up being a Mopar unit, as well.
So, I wonder if you could do something similar to a Rolls? I guess one major difference, is that with my DeSoto, a lot of this more modern stuff still fit, onto the older car, and came from the same company, so it wasn't hard to do. But with Rolls, a lot of stuff from another company might have to be modified, substantially, to make it fit.
2014 Malibu 2LT, 2015 Cruze 2LT,
Bingo. Hooking up different part that run off the same basic hydraulic system is way simpler that re-engineering an entirely new hydraulic system from stem to stern. And what shop want to take on the liability of messing with the prime safety system on a car?
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The V-8 conversions done to Jaguar XJs made absolutely no sense to me, since you are throwing away the only good part of a Jaguar XJ, the 6-cylinder engine (which had a longevity run about as long as the Chevy Stovebolt Six), and leaving all the horrible parts to be stressed out by a Chevy short block, which the car was never designed to deal with. Crazy.
You definitely want to do that every year, to protect those 16 brake pistons.
Yep. Take the flying Pinto. Please.
If making mods to the underpinnings gets too difficult, just swap out the underpinnings!