C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

1984 Corvette Miss/break-up around 2500 rpms

Old 09-05-2018, 09:37 AM
  #141  
Tom400CFI
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Port the beeesus out of the stock intake and enjoy.
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84 4+3 (09-05-2018)
Old 09-05-2018, 11:51 AM
  #142  
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Originally Posted by Tom400CFI
Port the beeesus out of the stock intake and enjoy.
I'm either fighting for my (well my parents money since it was a gift) back or getting one that isn't foobar. Although there is a cnc machine just chilling out in the engineering building... Once that is sorted I have been laying out a nice cam and head combo that I think will work nicely for my final goals for the car... We'll see.
Old 09-08-2018, 12:21 PM
  #143  
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To add insult to injury, today I finally looked at the intake and took some picture to demonstrate some of my frustrations and things I missed on installation.
The intake runners lined up to how the gasket was set on the heads... Note: as you go right it looks like I have the gasket tilted. It is straight but the end is off the face a little and the shadowing from the flash looks like I'm distorting reality. The left side is correct and flat to around the egr opening where it is lifting by the left bolt hole there.

The Thermostat Housing with gasket over it... The covered side has the lip resting right where the sealer ring is....

The housing minus the gasket.

Intake runner witness marks from the intake gaskets. 1 and 3 don't even have the sealer ring resting on the face, it actually was in the roof of the runner...

Close up of 1 and 3.

Now I should have been more diligent upon installing (I get that, I could have saved myself the headache but I wanted to enjoy the car before I went back to school and because of that I missed a lot...) but like, this is pretty bad no? I always though people said GM castings were bad but the gasket lined up perfect to the ports on the head. I sent my cousin a photo of the runners and he asked me if and I quote "Helen Keller cast that intake." A bit harsh but... I don't know how well after market intakes are supposed to line up. I would imagine this is pretty bad as far as that goes and I really can't do much to make it right no? If I am wrong, please let me know. I would love to be able to use a different gasket and have it work for the runners. The thermostat is blatantly off though.
Old 09-08-2018, 04:46 PM
  #144  
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well after reading all this thread I check my intake no leaks amen but computer saying tps sensors has low volt that way check engine blinks and it stumbles on idle this thread has help me a lot thanks
Old 09-08-2018, 04:53 PM
  #145  
84 4+3
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Originally Posted by fparkin
well after reading all this thread I check my intake no leaks amen but computer saying tps sensors has low volt that way check engine blinks and it stumbles on idle this thread has help me a lot thanks
You're welcome. Adjust your tps and I think that'll help.
My project turned into quite a **** show no? Lol.
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fparkin (09-08-2018)
Old 09-08-2018, 05:07 PM
  #146  
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yes sir that why I checked my intake you been though a lot but you learned too old cars are fun hell there 34 years old
Old 09-08-2018, 05:33 PM
  #147  
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Originally Posted by fparkin
yes sir that why I checked my intake you been though a lot but you learned too old cars are fun hell there 34 years old
The 55 thunderbird gave me less problems than this thing did. And that didn't run when I started lol. The 67 firebird has fought me but I beat that into submission too.
Old 09-12-2018, 04:35 AM
  #148  
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Originally Posted by 84 4+3
The 55 thunderbird gave me less problems than this thing did. And that didn't run when I started lol. The 67 firebird has fought me but I beat that into submission too.
In the end you won here, too
Old 09-12-2018, 09:04 AM
  #149  
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Originally Posted by Bfenty
In the end you won here, too
Yea, but those were fixed with zipties and duct tape. This required spending money...
Old 09-15-2018, 03:28 PM
  #150  
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Originally Posted by 84 4+3
The 55 thunderbird gave me less problems than this thing did. And that didn't run when I started lol. The 67 firebird has fought me but I beat that into submission too.
I replace tps sensor with a new adjusted it runs better and idle good around 600 rpm
Old 09-15-2018, 03:53 PM
  #151  
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Originally Posted by fparkin
I replace tps sensor with a new adjusted it runs better and idle good around 600 rpm
Told you.
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