Goofing off with some CJ heads...

[blykins]

Intake port volume is 162.2.

Increase of 7cc.

[falcongeorge]

I honestly don't know much at all about 4500's, kinda outside my realm of interest.

You would like them.

You would like them a lot...

I have used 2 circuit dominators on aggressive street/strip big blocks a few times, the ifr's generally need to be reduced, and if the carb you use doesn't have a primary side power valve, you will want to add one, once you have done that, they work very well indeed..

[blykins]

Heads are assembled and set up for my 390 dyno mule. 

Very pleased with how they have turned out.  280-290 cfm from a 2.080" intake valve sitting in a 162cc port isn't shabby. 

Assembled with Comp conical valve springs and PAC titanium retainers.







And a shot of the mule......factory crankshaft, with Molnar rods and Racetec dome pistons.

[My427stang]

Night and day difference between those heads and the ones I boxed up and sent out this summer!  Nice work, they should do well, especially with your ability to keep the port volume under control

I cannot wait to hear the mule at full song!

[cjshaker]

Just curious, what's the difference between the intake and exhaust valve seals?

[blykins]

My "leftover pile" consisted of some 5/16" stem valves and some 7mm stem valves.  A regular Viton seal for a 5/16" stem .530" guide is readily available, but I had to scrounge up some Viton seals for the 7mm stems.  The 7mm exhaust valves got the orange seals.

[My427stang]

Broncos fan is my guess....

[cjshaker]

My "leftover pile" consisted of some 5/16" stem valves and some 7mm stem valves.  A regular Viton seal for a 5/16" stem .530" guide is readily available, but I had to scrounge up some Viton seals for the 7mm stems.  The 7mm exhaust valves got the orange seals.

And I was guessing there was something special about the orange seals. Sometimes a round peg is just a round peg..lol

Ross, not gonna lie, I'd be disappointed if he was a Broncos fan