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LT1 waterproofing question



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Old 04-27-2010, 10:52 AM   #1
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LT1 waterproofing question

I have been surveying driveline options for potential build and about had my mind made up on a LT1 -> TH350 -> Dana 300 for their power to weigh, strength and short length. (Going for small, light weight and powerful).

In my research I discovered a problem with the LT1 vs. water, the optispark. I understand that MSD make a part to fix this problem, but I have not heard much as to weather is works well or not. Also if there are any other non tipical waterproofing issues.

So, has anyone dunked their LT1?
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Old 04-27-2010, 11:46 AM   #2
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You don't even have to dunk it yourself. The waterpump on the LT1s have a drain hole on the bottom. When they drain, they drip right into the optispark. Huge pain in the arse. Go with a LS1 and call it good.
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Old 04-27-2010, 04:10 PM   #3
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Originally Posted by projectfreedom View Post
You don't even have to dunk it yourself. The waterpump on the LT1s have a drain hole on the bottom. When they drain, they drip right into the optispark. Huge pain in the arse. Go with a LS1 and call it good.
x2!! put a chevy 5.3 or 6.0 in it!! you will not regret it!!
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Old 04-27-2010, 07:18 PM   #4
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I did some research myself on this same subject as I just picked one up. The MSD moves the pulg wires but not the sensors. Or so Im told. And for that reason it doesnt really fix the problem. Im not really worried about it as I dont plan on "dunking" my heep.
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Old 04-27-2010, 08:07 PM   #5
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my dd is a trans am w/ optispark... keep as far away from it as possible... trust me, you dont have to dunk it to make it run like crap... not tryin' to rag on anyone or anything like that, just speaking from experience...
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Old 04-28-2010, 07:37 AM   #6
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Thanks for the imput guys.
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Old 04-28-2010, 07:56 PM   #7
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i have a good friend with a twin supercharged lt4 in a camaro he never has seemed to have any trouble with his but then again i really am not familier with the lt family
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Old 04-29-2010, 07:44 AM   #8
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Did a little looking and found lots of 6.0s for about the same $$$ as a LT1; I will likely go that route.
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Old 04-29-2010, 05:35 PM   #9
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I like the 6.0 option. Done a little reading and came up with another canidate. Supercharged Buick v6 3.8 out of the 98-05 Regals and Bonnevilles.

Pros:grandma cars that are dirt cheap with no miles.
Can put out about 300hp with out too much work.

Con: not really saving much on weight or space, 30"W 23"L 30"H 430lbs

Opinions?
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