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  #261  
Old 05-31-2022, 04:56 PM
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Originally Posted by Too Many Projects View Post
Sounds like a cam lobe going flat, usually the exhaust letting the burned fuel back fire thru the carb. Pull the left cover and investigate.
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Originally Posted by JRC99 View Post
Ah, right! It's the exhaust valve on #8 then!
And there you have it.
Winter projects are always fun, but expensive. Start putting away some funds now so you can just dig in and keep working on it.
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1970 Chevelle SS
1966 Chevelle SS
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  #262  
Old 05-31-2022, 05:50 PM
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Sticking valve stem??? A friend recently bought a 396 car that had been sitting a long time. It would intermittently idle rough and pop thru the carb. He gave it a dose of Sea Foam or some similar product and drove it. It smoothed out and now runs fine. Just a thought....
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  #263  
Old 05-31-2022, 07:54 PM
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Sticking valve stem??? A friend recently bought a 396 car that had been sitting a long time. It would intermittently idle rough and pop thru the carb. He gave it a dose of Sea Foam or some similar product and drove it. It smoothed out and now runs fine. Just a thought....
I've had 2 cars with sticking exhaust valves in recent years. The clearance from guide to stem was just too tight especially when the motor got some solid heat in it. The first was the 427 in my Dad's car, the second was a customers 327. While wiping out a cam lobe is not rare, please don't short cut the process without making sure the rest of the valvetrain is up to snuff.

I know it's expensive and frustrating..........but so is doing it twice.

Tim
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  #264  
Old 05-31-2022, 09:17 PM
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I ran Berryman B12 through it a couple months ago. Shouldn't be anything gummed up. It's definitely something I plan on really investigating.
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My cars, passed down by my grandfather:

'68 Camaro SS (454/TH400, possible L78/M22) LeMans Blue, black deluxe interior, black vinyl top. 3.73- mostly old school 70s stuff.
'89 Mustang GT- Gears, subframe connectors, muffler delete, and a couple other minor mods.


Ain't no fun in viewing your car as an 'investment'. Get out there and beat on it!
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  #265  
Old 06-04-2022, 09:11 PM
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The Chevelle has 255/70/15s on the rear compared to the Camaro's 255/60/15s. Just for giggles, I bolted the Chevelle's wheels on the Camaro to see the rake. Raised it about 1.5 inches, roughly.


The picture with all 4 wheels being Cragars was an edit, of course.

A couple of notes- one, the 'someday' goal is a little bit more rake than even this and either L60s or 275/60s (depending on whether or not I commit to bias plies) and to do that, it looks like I'll need new springs. Obviously, that can wait until after the engine is done.

Two, speaking of the engine, fret not- I didn't run it to get the car out. I just pushed it.

Lastly, you may notice Dad's new driveway.

No, he will not let me 'break it in' with a burnout. I already asked. Lame.
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My cars, passed down by my grandfather:

'68 Camaro SS (454/TH400, possible L78/M22) LeMans Blue, black deluxe interior, black vinyl top. 3.73- mostly old school 70s stuff.
'89 Mustang GT- Gears, subframe connectors, muffler delete, and a couple other minor mods.


Ain't no fun in viewing your car as an 'investment'. Get out there and beat on it!
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  #266  
Old 06-07-2022, 06:57 PM
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Don't be the first guy to leak oil on Dad's new driveway. Trust me on that, experience talking.
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  #267  
Old 06-07-2022, 07:36 PM
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Don't be the first guy to leak oil on Dad's new driveway. Trust me on that, experience talking.
Haha, no mechanical work will be done on it there. Sometime this year we're going to drag it to my place so I can pull the engine.
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My cars, passed down by my grandfather:

'68 Camaro SS (454/TH400, possible L78/M22) LeMans Blue, black deluxe interior, black vinyl top. 3.73- mostly old school 70s stuff.
'89 Mustang GT- Gears, subframe connectors, muffler delete, and a couple other minor mods.


Ain't no fun in viewing your car as an 'investment'. Get out there and beat on it!
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