[4.5x4.5x4.5]

Is it worth the time and effort to pull apart and port match the heads to the intake in the pic? One side of the port on all 8 is off about 3/16 max. Or is this not a big deal.

 

[jeff swisher]

A lip in a wet flow deal can sometimes be beneficial.
Look at the mismatch of the BBC square port intake on oval port heads.
It flat works.
The true and only way to know if it would be better to port match it will be to run it as is then port match it and retest.

Yea not what you wanted to hear.

 

[68fbird]

That’s some pretty $hit.

 

[4.5x4.5x4.5]

A lip in a wet flow deal can sometimes be beneficial.
Look at the mismatch of the BBC square port intake on oval port heads.
It flat works.
The true and only way to know if it would be better to port match it will be to run it as is then port match it and retest.

Yea not what you wanted to hear.

Crap, so much easier to port the intake. That’s just a mock-up so it won’t be as bad. I did scribe and mark it just in case while it was assembled.

 

[4.5x4.5x4.5]

That’s some pretty $hit.

That’s some pretty $hit.

 

[69_CHEV_ELLE]

That’s some pretty $hit.

Yeah, makes you wonder why he'd even ask the question.

 

[steelcomp]

Seriously? Putting that intake on a set of as-cast heads?
Way too many places to go with this other than I'd say you have the cart WAY before the horse.

 

[vortec710]

A pretty picture.....significance...? $how and tell......but impressive.

 

[bracketchev1221]

As long as the intake is smaller, I wouldn’t worry about it.

 

[cstraub]

Based on what you paid for that intake and making the assumption this is a max effort deal, YES, scribe the heads and port it for the intake.

 

[steelcomp]

Based on what you paid for that intake and making the assumption this is a max effort deal, YES, scribe the heads and port it for the intake.

Max effort with as-cast heads? 🤦‍♂️
Regardless...that's the WRONG answer. Last thing you want to do is create sudden increase in cross sectional area right where the intake and head come together...which is exactly what you will do. If you're going to move one side of the port over, you better be prepared to move the other side over as well. In this case, since we're just dealing with an as-cast set of heads anyway, best to just leave it alone. The engine will never know the difference.

 

[69_CHEV_ELLE]

Oh look. The beginnings of a pissing match by a non-vendor and a vendor. Subscribing.

 

[-SS454-]

Oh look. The beginnings of a pissing match by a non-vendor and a vendor. Subscribing.

I'm going to grab some pop corn and marvel over that intake. Overkill or not, it looks like an impressive piece.

 

[bracketchev1221]

Based on what you paid for that intake and making the assumption this is a max effort deal, YES, scribe the heads and port it for the intake.

Based on the small spring, stud rockers and tool steel retainer I’m not thinking max effort.

 

[cstraub]

Based on the small spring, stud rockers and tool steel retainer I’m not thinking max effort.

We don't know and that's why I stated I was making an "Assumption".

 

[bracketchev1221]

We don't know and that's why I stated I was making an "Assumption".

👍🏻

 

[Badd64]

A lot of times there is a little fore and aft wiggle room with the manifold to head. I would almost bet if you loosen up the manifold you can shift it that little bit/

 

[6426yy]

Food for thought...

Not exactly apples to apples

 

[4.5x4.5x4.5]

Based on the small spring, stud rockers and tool steel retainer I’m not thinking max effort.

The heads just came in and are as is. This was a quick mock up without the stainless shaft rockers . Waiting 16 weeks for the aluminum block. Not looking for max effort. Just an itsy bitsy 900 NA. Which should be very easy.

 

[4.5x4.5x4.5]

A lot of times there is a little fore and aft wiggle room with the manifold to head. I would almost bet if you loosen up the manifold you can shift it that little bit/

Tried that with a mallet. Didn't work.