What are some reasons for this? Just a little gust of it on startup and nothing more. Stinks though, heh.

88-GTA-350

 

Might be your Valves. No biggy. As I heard before, that just shows a broken in 350

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1988 Jet Black IROC
5.7L W/ 64000 miles
Flowmaster Exhaust
Fully Loaded
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My IROC

 

One known symptom of white smoke on start up is valve stem seals. When I had my 305 in my '88 it used to smoke on start ups, it had 150,000 miles on it, i figured it was time. Sure enough, that stopped the smoke. I work at a tranny/auto repair shop and I was able to fix them my self. It is not a job for someone without the proper tools and experience.

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1988 Camaro Sport Coupe: Orignally: 305 TBI 700r4
Now: 1974 350CI, 2bolt,.030 over, Badger Flat Head Pistons w/ valve relief, Melling high performance street cam, GM Cast Vortec Heads, Edelbrock RPM Air Gap Intake, Edelbrock 600cfm w/ electric choke, GM HEI w/ vacuum advance, Weiand Low Profile Air Cleaner, Mallory 5 port Fuel Pressure Regulator, Mr. Gasket Throttle Cable Bracket, Corvette Shift Servo, 16" IROC Wheels, Every thing else is STOCK

 

It only has 79,000 miles on it, but okay, i'll take a look. Thanks y'all.

 

Mine did it with 34K miles. Valve stem seals did the trick. Hope this helps.

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1990 IROC 350
Mods: Too busy trying to make it run right to mod it.
Airfoil, Dynomax cat-back, MSD coil, 180 t-stat, Bald Eagle tires,
Hypertech fan switch, Accel 23# injectors, Holley AFPR, ported plenum,
Ported Daytona Yellow stock base, Moroso valve covers, other stuff,
Ruger P95DC, hot wife, new oil filter, thick rubber floormats, no cats.
18.0 @ 85MPH since I'm one big-a$$ MF
"It's better to have and not need than to need and not have."

 

Same problem here....valve stem seals.

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88 GTA Notchback
A4 / 350
Stock
** New User Name**

Kill List:
95 Mustang GT |88 Mustang GT
94? Impala (real close)|97 Dodge Neon
86 Corvette |2000 Prowler
88 ASC GTA | And a few more Accords and Neon's.

And more Civic's then I can count. Why do they even bother?

 

My 91 Firebird does the same thing. A little white snoke at startup but never anything more.
-JT

 

This is the Chevy trademark! Don't worry, 90% of them do it and it does not mean your engine is worn out. I still get 2000 miles to a quart of oil, which no one should ever complain about with a small block Chevy

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1986 Camaro Sports Coupe
T-tops, variable wiper, power hatch, rear defrost, third brake light
LG4 305 V8, Hooker Shorty headers, 3" pipe into Walker Quiet Flow dual exhaust
Edelbrock Performer intake, "Damonized" Q-Jet 4bbl, K&N filter, Crane ignition kit
TH700R4 transmission and Derale cooler
Air conditioning, power windows, power door locks, power brakes, power steering, tilt wheel
Kenwood cassette, Pioneer 6x4 component front speakers
Rockford Fosgate 6x9 Punch rear speakers
Z-28 front and rear sway bars
Aluminum slots and Goodyear 225x60R15 Eagle HP tires
243 horsepower and 326 foot pounds of torque at the flywheel
_ _ _ _ _ __ _ _ _ _ _
Yea verily, and he smote the smog heathens from his small block Chevy, even from the air pump to the converter ...
Todd 1:1

 

Thats just Chevrolets way of getting EXTRA lubrication to the valve guides! LOL.

Not a big deal, its about $20 for new valve seals, but the PITA factor is a bit more.

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1992 Pontiac Firebird 350/Six Speed
1987 Toyota Pickup 383/500+ HP