View Full Version : Anyone opened their own intake runners?/renixstroker

frsno jeeper
January 12th, 2005, 13:01
I am building a renix stroker, and i had the intake tanked.
I was looking at the intake ports as i matched up the intake gasket, and i seen quite a bit of materiel that could be ground out to open the intake port a bit.
Has this been done?Is it worth the effort/gain?

January 12th, 2005, 13:23
I opened up mine about 1/8" all the way around, but quite frankly you need to do much more than that all the way through the head to make it worth your while. The restriction is really where the runner makes a sharp turn down to the chamber area. Just smooth it all out and call it good.

An HO head really outflows a Renix head, and I don't think any amount of porting on the intake manifold or the head is going to change that.


January 13th, 2005, 18:01
Just match the intake to the FelPro head gasket and do the same with the head. - It is possible to get a Renix head to flow better than a stock HO head with a lot of Porting time, but much easier to use a HO head to start with.