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Topic: Polished, extrude honed & hand ported stock HO lower **SOLD** (Read 409 times) previous topic - next topic

Polished, extrude honed & hand ported stock HO lower **SOLD**

I was using this with my KB but switched to a Systemax 1 lower, so I figured I'd put it up here first to see if anybody here is interested in it. Based on TMoss site I'd guess this flows ~170-200 CFM. I spent the most time on the runners with the dog-legs and used finger calipers to get the short-turns as open as possible. The runners were also extrude honed so the areas that could not be reached with a cutter have been smoothed and opened a bit. The polishing is nice too as you can see in the picture below. I think this lower has had more $$ put into it than any other stock lower ever! I'm asking $100 for it based on the polishing and porting.

**SOLD**
11.96 @ 118 MPH old 306 KB; 428W coming soon.

Polished, extrude honed & hand ported stock HO lower **SOLD**

Reply #1
Dam if only it was  gt40 style.

Polished, extrude honed & hand ported stock HO lower **SOLD**

Reply #2
How much work would have to be done to a stock HO upper to match the flow of that lower?
88 Thunderbird LX: 306, Edelbrock Performer heads, Comp 266HR cam, Edelbrock Performer RPM intake, bunch of other stuff.

Polished, extrude honed & hand ported stock HO lower **SOLD**

Reply #3
Hmmm, not sure - here is what TMoss (the expert on porting stock intakes) says:

Quote from: "TMoss"

Q.  Do you recommend porting the upper intake as well as the lower?
A. 
Depending on the combination, porting the upper can have it's advantages.  For stock heads, no need.  For ported E7, stock GT40/GT40P or Windsor Jr. heads then it may give some more power. 
For one, the 63mm throttle body opening in the upper should be opened to 65mm if no EGR spacer is used with a 65mm TB, or open it to 67mm as most 65mm EGR spacers are more like 67mm in size.

Most guys have very good luck with just the lower porting.  Just ask me, and I'll be able to tell from your combo description whether it's needed or not.


There's lot's more info here -> http://www.tmossporting.com/tabid/334/Default.aspx
11.96 @ 118 MPH old 306 KB; 428W coming soon.

 

Polished, extrude honed & hand ported stock HO lower **SOLD**

Reply #4
Quote from: Cougar5.0;225904
Hmmm, not sure - here is what TMoss (the expert on porting stock intakes) says:



There's lot's more info here -> http://www.tmossporting.com/tabid/334/Default.aspx


Ah thanks. I have my eye on a Stang notch near me which might need some *upgrades* ;)
88 Thunderbird LX: 306, Edelbrock Performer heads, Comp 266HR cam, Edelbrock Performer RPM intake, bunch of other stuff.