LT1's & 4's.... 1992 thru 1996 had the optispark...
1994's and up I believe corrected most of the mosture problems
by venting the cap...
I had absolutely zero problems with my 95 when I owned it.. INHO it is
no reason to avoid the buying a 92 thru 96 Corvette... PERIOD !
64 72 & 98 Verts
76 & 79 Coupes
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Yea in 94.... Mine is a vented one. And I've had problems from getting
when I first got the Vette in '94 I would literally hose down the engine
from time to time, and go huh..... just the dang distributor getting wet
Little did I know I was playing with disaster. LOLOL
This was when hardly anyone outside dealerships knew about the Opti
Can you imagine now watching some guy with his new purchased C4 (like I was)
with a garden hose just soaking away..... Hey Dude, NOOOOOOOOOO!!!!!!!
And I did a T-Stat change last year, even being careful I got it wet and
about 2 weeks to dry out and run properly again...
If by vented you mean drip holes in the bottom, then yes they were all
vented. '92 to '94 were vented only by the drain holes in the bottom.
Later models plumbed fresh air from the airbox into the cap and engine
vacuum to the distributor housing.
I've had both and had no problems, except for a '94 model that shot the
rotor out through the side of the cap.
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