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PostForum: GM Performance Forum   Posted: Tue Jun 09, 2015 8:04 am   Subject: Vortec L31 MARINE MANIFOLD project! Q&A

And it needs to be tapped to 3/8 also?

What's the best way to make sure it is close to center?
PostForum: GM Performance Forum   Posted: Mon Jun 08, 2015 6:55 pm   Subject: Vortec L31 MARINE MANIFOLD project! Q&A

Well hello everyone. Iam new to the group.

Just picked up a marine intake but was wanting to know how bad is the
Coolant bypass to drill and tap??

Thanks james
PostForum: GM Performance Forum   Posted: Sun Jun 07, 2015 7:09 pm   Subject: Marine intake and cam swap

Nice build you have there.

How hard was it drilling the coolant bypass?

Iam about to do mine this week.

Thanks james
PostForum: GM Performance Forum   Posted: Sun Jun 07, 2015 7:03 pm   Subject: marine intake

Just bought me a marine intake for my 355 I am building.

About to drill and tap the coolant sensor and the bypass.

I Wana make sure I get it right. On the bypass how did yall measure to make sur ...
 
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