Should the gaskets that attach the intake air tubes to the plenum be coated with an RTV/Sealant??? Am in the process of reinstalling them after removal.

 

No. The only RTV the intakes should see is the front and rear of the lower intake, where it meets the block in between the heads. No where else is needed.

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If you live in Southeastern US, check us out!
South East Thirdgen


ASE Master Tech + L1
Savannah, GA

'87 Trans Am
S/D TPI retrofit including functional PassKey, 22# injectors,
JET AFPR, Ported Plenum,
TB Coolant Bypass,
SSM SFC, Boxed LCAs,
8mm Accel wires,
Flowmaster Exhaust,
16" GTA rims,
Corvette Servo,
KYB Shocks
-->14.97 @ 94.9 MPH<--

'97 Bonneville SSE

 

How about loctite for the fasteners, since they do come loose after some time in service.

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'87 IROC, 305TPI, 5Sp, , 170K miles, all original except for K&N filter, Vin F

 

Should not be needed, but if you feel that strongly about it, go ahead.

------------------
If you live in Southeastern US, check us out!
South East Thirdgen


ASE Master Tech + L1
Savannah, GA

'87 Trans Am
S/D TPI retrofit including functional PassKey, 22# injectors,
JET AFPR, Ported Plenum,
TB Coolant Bypass,
SSM SFC, Boxed LCAs,
8mm Accel wires,
Flowmaster Exhaust,
16" GTA rims,
Corvette Servo,
KYB Shocks
-->14.97 @ 94.9 MPH<--

'97 Bonneville SSE

 

One other suggestion. You should use either liquid pipe thread sealant or RTV on the threads of your lower intake manifold bolts(intake to cylinder head). These bolt holes can sometimes pump oil or coolant onto your intake manifold without using sealer on the threads.



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89RS w/350 TPI; 69RS/SS w/450 HP 350/Muncie 4-Speed "Too weird to live, too rare to die."

 

Pat: After much debate I decided to use medium grade locktite on the bolts that attach the intake to the heads. I new I had to seal the leak and figured that locking the bolts in place was a good idea seeing how heat and vibration can loosen them. Am wondering if I should replace the injector orings (I have another post on this) and whether or not to use sealant on the fuel line interface with the rail (upper line to manifold line). Thanks for your advice.

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'87 IROC, 305TPI, 5Sp, , 170K miles, all original except for K&N filter, Vin F

 

SGuy,

Forget about sealant on the fuel lines, since the fittings are 'O' ringed flares. If you use good 'O' rings, no sealant should be necessary and may actually interfere with a good seal.

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Later,
Vader
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"No matter how hard you try you can't stop us now"
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