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  #251  
Old 05-30-2022, 12:37 AM
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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.
That's what I was afraid of.
The good news is that I'm living at Pappaw's house now, and there's an iron beam with a chain for engine pulling (since if I'm going this far into it, I may as well pull it and have everything inspected)

The bad news is that the car is at Mom and Dad's. I'll pull the over valve cover tomorrow and have a look I guess.

Not surprising, but still a bummer.
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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 Day 2.
'89 Mustang GT- 3.55, subframe connectors, muffler delete, and a couple other minor mods. Exactly as he wanted it, so how it shall stay

Also:
1995 Ford F-150 XL
2004 Dodge Ram Hemi GTX- #192 of 433


Ain't no fun in viewing your car as an 'investment'. Get out there and beat on it!
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  #252  
Old 05-30-2022, 12:53 AM
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Don't be yanking it out until you know what the issue is. It's much easier to do running checks with it installed than on a stand.
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  #253  
Old 05-30-2022, 01:04 AM
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^ that.

Also, sorry to learn of your loss too man.
Anthony
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  #254  
Old 05-30-2022, 04:06 AM
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Originally Posted by Too Many Projects View Post
Don't be yanking it out until you know what the issue is. It's much easier to do running checks with it installed than on a stand.
I meant if it does end up being a dead cam lobe, then it's getting pulled.
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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 Day 2.
'89 Mustang GT- 3.55, subframe connectors, muffler delete, and a couple other minor mods. Exactly as he wanted it, so how it shall stay

Also:
1995 Ford F-150 XL
2004 Dodge Ram Hemi GTX- #192 of 433


Ain't no fun in viewing your car as an 'investment'. Get out there and beat on it!
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  #255  
Old 05-30-2022, 02:00 PM
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1970 Chevelle SS
1966 Chevelle SS
1967 Camaro ss/rs
1938 Business coupe, street rod
2000 FXSTS, original owner, 13k miles
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  #256  
Old 05-30-2022, 06:07 PM
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Pulled the left valve cover. Everything over there looks fine.
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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 Day 2.
'89 Mustang GT- 3.55, subframe connectors, muffler delete, and a couple other minor mods. Exactly as he wanted it, so how it shall stay

Also:
1995 Ford F-150 XL
2004 Dodge Ram Hemi GTX- #192 of 433


Ain't no fun in viewing your car as an 'investment'. Get out there and beat on it!
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  #257  
Old 05-30-2022, 08:01 PM
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Originally Posted by JRC99 View Post
Pulled the left valve cover. Everything over there looks fine.
OK, assuming it isn't a flat lobe, are the plug wires on correctly ? Many people get #5 and 7 crossed when all the wires are off at the same time. On that line of thought, are the plug wires all good ? Old, cracked wires can transfer to another and cause a misfire also.
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1970 Chevelle SS
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  #258  
Old 05-30-2022, 08:23 PM
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Quote:
Originally Posted by Too Many Projects View Post
OK, assuming it isn't a flat lobe, are the plug wires on correctly ? Many people get #5 and 7 crossed when all the wires are off at the same time. On that line of thought, are the plug wires all good ? Old, cracked wires can transfer to another and cause a misfire also.
Wires are new, the noise is from the passenger side. Plus, like I said, the last rocker on #8 (I'm not sure which side is intake or exhaust but I know it's the number 8 cylinder) doesn't move much while it's running, and when I checked the lifter with the rocker off, the pop was consistent with that lobe. I did check the firing order, it's correct. Unfortunately, that pretty well narrows it down. Good thing the garage at Pappaw's has a furnace because this sounds like a winter project!
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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 Day 2.
'89 Mustang GT- 3.55, subframe connectors, muffler delete, and a couple other minor mods. Exactly as he wanted it, so how it shall stay

Also:
1995 Ford F-150 XL
2004 Dodge Ram Hemi GTX- #192 of 433


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

Last edited by JRC99; 05-31-2022 at 02:02 AM.
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  #259  
Old 05-31-2022, 11:31 AM
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Quote:
Originally Posted by JRC99 View Post
Wires are new, the noise is from the passenger side. Plus, like I said, the last rocker on #8 (I'm not sure which side is intake or exhaust but I know it's the number 8 cylinder) doesn't move much while it's running, and when I checked the lifter with the rocker off, the pop was consistent with that lobe. I did check the firing order, it's correct. Unfortunately, that pretty well narrows it down. Good thing the garage at Pappaw's has a furnace because this sounds like a winter project!
Your intake rocker/valve will be by your intake port and your exhaust rocker/valve will be by your exhaust port. Hope this helps.
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  #260  
Old 05-31-2022, 03:06 PM
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Originally Posted by dykstra View Post
Your intake rocker/valve will be by your intake port and your exhaust rocker/valve will be by your exhaust port. Hope this helps.
Ah, right! It's the exhaust valve on #8 then!
__________________
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 Day 2.
'89 Mustang GT- 3.55, subframe connectors, muffler delete, and a couple other minor mods. Exactly as he wanted it, so how it shall stay

Also:
1995 Ford F-150 XL
2004 Dodge Ram Hemi GTX- #192 of 433


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