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#1
09-23-2014, 12:09 PM
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Re: Holley SBC valve covers
I have always just assumed MT and Holley valve covers were cast by the same foundry, as they are so similar.
Biggest problem with either is that the pvc and or breather hole is right over a rocker arm with no baffle. If you have good oil pressure, the squirt goes right in the pvc causing some oil consumption.
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Don't believe everything you read on the internet ... Ben Franklin 
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#2
09-23-2014, 01:15 PM
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Re: Holley SBC valve covers
At one time they were cast by the same Winters Casting that did GM's intake manifolds.
__________________
...................... John Brown This isn't rocket surgery.....
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#3
09-23-2014, 10:00 PM
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Re: Holley SBC valve covers
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Lynn</div><div class="ubbcode-body">I have always just assumed MT and Holley valve covers were cast by the same foundry, as they are so similar.
</div></div> They are the same..Holley bought M/T in 1971 or 1972
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