flipt86

iTrader: (2)

Hey all,

Just got my short block back from the machine shop. It needed to be decked and now I have the pistons coming out of the hole around .018-.020 on average.

I want to run the .060 Cometic gaskets to get a proper quench distance of .035-.040, so my question is this...

Will the C5475-060 gaskets with the 3.910" bore be the ones I need to get?

Also,
I have read of some people having sealing issues with these. From what I can gather the surface of the heads and block need to be at a smoothness of 50ra or better. Both my heads and block are fresh from the shop and look good.

What does a surface finish of 50ra's look like? I have nothing to compare to...

Also, would you all recommend a light dusting of the copper spray to the gaskets even though Cometic says to install dry?

I have read of people installing them both ways...

Thanks for any help or insight!

Burken01

iTrader: (88)

If the deck and heads are fresh from the shop then install the cometics dry.. 3.910 bore will work fine

Sales1@Texas-speed

^I agree. Make sure your deck surface, and head surface is clean and then install the gaskets dry. Those particular Cometic gaskets should work fine for your application.

JakeFusion

iTrader: (7)

Dry install. Only use the copper spray when installing heads on a used shortblock.

flipt86

iTrader: (2)

Thanks Guys. One other question... I need to torque these to check PTV once I get my cam in, I can reuse these dry as long as the engine hasn't been fired, correct?