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Jan 1, 2006 | 07:41 PM

694speed350

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Race Director

Joined: Sep 2005

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From: Farragut,TN

2 questions

I have 2 questions. 1 the car i have has the air pump removed by one of the previous owners and plugs installed in the exhaust manifolds. does any one know what the plug sizes are? i changed the plugs after i got the car and hit one of them with my spark plug wrench and it came loose actually fell out. tried to re-install it no go. anyway it is missing now and i have an exhaust leak. 2ond question: when starting car at certain times the fan hits the fan shroud. after the engine warms up it stops. what could be causing that? checked the fan read about the bearings in the water pump no play. what could be causing this?

Jan 1, 2006 | 07:46 PM

corvgreg

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Joined: Mar 1999

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From: San Diego CA

Maybe 3/8 pipe thread? Otherwise remove another and take it with to match up.

Does the engine do this on acceleration too? Could be the LH motor mount. Otherwise check the mounting of the shroud.

Greg

Jan 1, 2006 | 08:25 PM

Supersportt396

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Joined: Mar 2005

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From: Phoenixville Pa

Vette

I agree with the motor mount, but check both side.

Jan 1, 2006 | 08:55 PM

71redskin

Burning Brakes

Joined: Feb 2005

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From: wash. dc

those air holes are 1/4 in. pipe plugs if i recall..

Jan 1, 2006 | 10:33 PM

bobs77vet

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From: Arlington Va Current ride 04 vert, previous vettes: 69 vert, 77 resto mod

also check the fan clutch and make sure its not going bad

Jan 2, 2006 | 01:45 AM

jetvette

Instructor

Joined: Jul 2000

Posts: 173

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From: Pumpkin Center CA

Regarding the air plugs. Were emissions air pumps used in '69? Maybe I'm just gettin too old for the memory I'm workin with. Guess it really doesn't matter,you still need the 1/4" NTP plug.