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Old 05-17-2009, 09:39 PM   #1
hcaz095
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Location: Ann Arbor, MI
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HEI... 50k V vs 65k V...?'s

So, after going to ebay and looking at HEI's available.. I am not sure if I should go with the 65,000V or the 50,000V? My truck just acred the points, so I will be replacing asap. it is a 1972 c10 lwb......350 w/ th400 3.08 gears stock original motor... I will be doing some pulling of boats and motorcycles if it makes a difference, but otherwise i drive fairly slow. Give input wither way... Is there a plug gap difference? Anything I should know.....

Thanks,


~Zach
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Old 05-17-2009, 09:42 PM   #2
Longhorn Man
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Re: HEI... 50k V vs 65k V...?'s

no need to get the 65K unit. The 55K will do fine, and you would never notice one from the other on a stock engine.
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Old 05-17-2009, 09:45 PM   #3
hcaz095
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Re: HEI... 50k V vs 65k V...?'s

So the 65k is for engines with more aggressive cam/timing (more power) that need a really strong spark? What is the line for needing to switch? Any disadvantages to running the 65k just in case someone decides to 'eventually' build their engine up?
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Old 05-17-2009, 10:54 PM   #4
hcaz095
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Re: HEI... 50k V vs 65k V...?'s

Also, if you buy a rebuilt one from NAPA or similar store, what is the voltage of those new/ rebuilt (OEM replacement) units? Were they very different based upon application?...ie corvette vs cargo van etc.

I am asking for my understanding and for others as a reference that are somewhat new/ignorant to older style ignition systems and upgrading them. Thanks.


~Zach
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