chikoo

There are a few who are afraid that the car will shed just more than some carbon stuck on the valves

Aron9000

I've owned two Cadillacs(a 91 Brougham and a 95 Fleetwood) for six years, I spent A LOT of time on the Cadillac forums. I never owned a Northstar V8 Cadillac, but reading about them, if you just putt putt around in town in like an old man/woman in your Deville/Seville/Eldorado with the Northstar, it starts to build carbon in the engine. I kid you not, go onto the Cadillac forums, they will advocate you running your Northstar V8 from 40 to 100(or however safe you feel taking it up in speed) with your foot to the floor, several times to blow the carbon out of the engine because the previous old codger never went above 1/4 throttle in his last journeys to the Mason's Hall, Country Kitchen Buffet, and church on Sunday morning.

Allen K

iTrader: (4)

Northstars were introduced in 92 and last revised in 2000. If you use the 2000 revision as a baseline, that's still a 16 year old engine. Not exactly modern

mmarshall

Buick made these changes primarily to more or less standardize its powertrains with Olds and Pontiac. That saved complexity and production costs.

Another thing that was relatively easy to recognize on the nailhead engines (besides the valve cover angle) was the fact that most of them had the valve covers painted a distinctive green.

Did you ever get a chance to drive a 60s-vintage Super Turbine 300 transmission? It was an outgrowth of the older, fluid-drive two-speed Dynaflow that was just as smooth but much less efficient. The ST300 was, IMO, one of the smoothest automatic transmissions ever built (I owned one when I was in college)...especially compared to Chrysler's efficient but noisy and firm-shifting Torqueflite. Adding to the ST300's smoothness, on the big Buicks of that vintage, was more than the average number of U-joints along the drive line, soaking up every last bit of vibration in the system.

LexBob2

I guess I would peeve the OP. I rarely floor my cars these days. When you reach a "certain age" you'll understand. Every now and then I'll wind them out not often though.

Sundog49

I must have one of the healthiest cars on the planet, although, I don't abuse it.

aztr0

After getting a speeding ticket few years ago, I've been a paranoid driver constantly looking at my speedometer and cops hiding out.. I was never a floor it kind of driver in the first place though. Now when you add in my mayor's 25mph vision zero plan, my car never gets to roar. I took my new NX Fsport for a drive yesterday and the car wanted to GO, but the speed limit was 50 and then 45... And then 25... Sad.

Littleguy

Dang, I floor my LS daily, keep those spark plugs and injectors clean, hahaha.

coolsaber

TBH I floor all of my cars with the italian tuneup mindset. However I know its a myth for my DI cars, since carbon buildup is a way of life for these engines. Port or Multi injectors like say older vehicles or newer vehicles (like D4s or the new i4 in the NXs) they do have some effect, but as long as your using top grade, detergent filled gasoline, your good.

I still dont understand the italian tuneup, I just do it safely for the fun factor of waking up a motor. Real benefit, my butt dyno cant tell.

The other thing I have heard is for sunday driven granny cars, if the second owner or driver is a maniac, its really screws with the motor accessories since your "shocking" the engine and powertrain. Will it really immediately make your motor die; DOUBT IT. Will effectively take some useable lifespan out of the vehicle, most likely. But at that point the car is probs worth little to cry about.

Sundog49

Here in Florida, speed limits are rarely enforced. While I don't approve of speeding and reckless driving, I go with the flow most of the time. There are many opportunities to blow the cobwebs out.

mmarshall

Part of that is (probably) because you also have so many 90-year old people going 20 MPH.