Is it worth the time to polish the runners on the inside? I'm not lookin to pull the heads and port match them, just clean up the intake a little. Anyone done this or have pics of someone who did? Thanks in advance. :hail:

 

FB,

Porting is fine, but don't ever waste your time polishing the intake runners. There is no practical benefit from this, and it may be dedtrimental.

I had to port my LT1 intake to match the head ports/flow:

 

Vader,

How'd you match the intake to the heads? Did you use a gasket as a template?

 

S10,

When porting time rolls around, I tend to use up lots of old playing cards and Exacto knife blades making templates, gages, and masks. The gaskets are always a good guide, but I've found that saometimes the gaskets need a little trimming as well, so they aren't an absolute perfect fit.

I usually save the playing card gages just in case one of the porting jobs works out exceptionally well. It would make a nice permanent template.

 

Vader,
Do you think that my ZZ4 heads are that far off from the LT1 intake ports? The are the early corvette style w/ angle plugs.

 

It should be easy enough to measure and compare once the intake is off. At least intake removal on an LT1 is a little easier than a TPI.

 

You got that right. That was one of the reasons I didn't buy a Super Ram last year.

Thanks for all the help. :hail: