Intake gasket recommendations? - Chevelle Tech
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post #1 of 5 (permalink) Old Jul 9th, 19, 1:36 PM Thread Starter
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Intake gasket recommendations?

I found a significant vacuum leak between #4 and #6 between the intake and the head. Need to re-gasket. 163 aluminum intake, rectangular port heads. Never done this on a BBC. Any gasket recommendations?
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post #2 of 5 (permalink) Old Jul 9th, 19, 4:29 PM
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Al
 
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Re: Intake gasket recommendations?

Mr. Gasket Ultra-Seal or Fel-Pro Performance and no gasket on the front and rear China walls. Use RTV or The Right Stuff.

Inspect the manifold and block for any issues that may cause leaks.

I use a thread sealant to keep oil from leaching up the bolts

After it goes through a few heat cycles retorque the bolts..

Good tips here:


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post #3 of 5 (permalink) Old Jul 9th, 19, 8:48 PM
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I use the grey silicon and have never had a oil leak. But be ready when you have to take it back off again if you ever have too. That stuff isn't any joke about sealing off and holding nice and tight that's for sure. But it doesn't break down like some silicon does like the blue, red, and black. That's why I alway go with grey after trial and error
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post #4 of 5 (permalink) Old Jul 10th, 19, 3:09 PM Thread Starter
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Re: Intake gasket recommendations?

Thanks very much guys. Just what I needed.
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post #5 of 5 (permalink) Old Jul 10th, 19, 5:12 PM
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Harry
 
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Re: Intake gasket recommendations?

Quote:
Originally Posted by esko ss View Post
I found a significant vacuum leak between #4 and #6 between the intake and the head. Need to re-gasket. 163 aluminum intake, rectangular port heads. Never done this on a BBC. Any gasket recommendations?
Mine was sucking oil into the intake. I used "The Right stuff". I Put a big bead on the china wall and forced some with my thumb into each corner between the china wall and the head. I also put a thin layer of the Right Stuff on both sides of the Felpro gaskets to make sure there were no leaks. It worked.

Harry
1970 Chevelle SS396 (408), Fathom Blue,
Original Block & Forged Crank, KB Pistons, Edelbrock 6045 Heads,Comp Cam 292H, March Serpentine, RPM AirGap,750HP,100hp Nitrous
A/F Wideband,Tremec TKO 600, 12 bolt,
30 spline Moser Axles, Richmond 3:73's, Hotchkis control arms, swaybars, springs, Wilwood 12" rotors D/S, 4 piston calipers
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