Porting Brain Trust, Help!

[XfireZ51]

Originally Posted by Ccmano

Don't bother to re-narrow the IH's, use them as is. Not ideal, but you will still be better off than stock. Then just go back and port the heads later.
H

During one of our FBI Pizza nights Marc H. asked if I had port matched the heads when I did the P&P. I told him I had and he mentioned that it was worth about 5 rwhp by doing so.

[tomtom72]

to the Porting Brain Trust for helping the port-challenged among us...namely me!

I want to make clear that I know beans about the science and art of porting an intake system. I just figured that with so large a miss match at the head port, that I actually would wind up with a net hp loss because of me not thinking this purchase thru to it's logical conclusion.

Thank you Gentlemen very much for your assistance to the non-cognicenti!


Tom

[Pete]

Tom,road trip to Lee's house next weekend

You can meet the FBI group.

Pete

[65ZR1]

I wouldnt use any product to narrow the ports back down. Except for welding, there is now way I would trust the filler to stay there with the gas, air, heat and vibration. Just think of what that stuff would do if it ended up in the cylinder.

[Paul Workman]

Originally Posted by 65ZR1

I wouldnt use any product to narrow the ports back down. Except for welding, there is now way I would trust the filler to stay there with the gas, air, heat and vibration. Just think of what that stuff would do if it ended up in the cylinder.

Amen!

Fer sher, I wouldn't use JB or anything else but welding. But, you will end up with a net gain regardless. If you have a die grinder, you can radius the edges of the primary ports on the heads - take less than an hour, and it might be worth a few extra ponies to boot?

P.

[Locobob]

I agree with pretty much everything that has been said here. Using metal filler would be a huge/ugly job and would likely result in pieces flaking off and falling into the cylinders - don't do it. If you can find someone to help you out the best bet would be to port match the top of the heads. If not then just bolt up the ported intake and be happy - it will still be a big net gain.

[tomtom72]

I want to thank you all for showing me the light.

I'm not going to close up anything using filler.

I may just bolt on the stuff I have and see how the motor behaves.


Pete, that would be a sweet weekend road trip. I'll have to do a mapquest and see what I can figure out....it would be sweet to see how the FBI does things and meet all of the brothers out in that neck o' the woods.

Again, thank you guys for saving me alot of potiential grief down the road!


Tom