Okay, right off the bat from strictly a performance standpoint, the TFS wins hands down. I know that.
However, in my particular case, I already have the heads and CJ intake manifold. The intake is in nice shape, just needs a good cleaning and some paint. The heads on the other hand, are in bad shape. One has been dropped and has cracks needing repair on one end at the valve cover mating surface, nowhere near the ports, valves or chambers. The other head was damaged at about the same point and has already been repaired.
I'm sure they'll need guides and hardened exhaust seats. Will need to buy valves, springs, retainers and keepers.
The part numbers on both heads are illegible on one and nearly so on the other. They are worth zero to anyone looking for restoration parts.
If I can get them repaired and ready to go for a grand or so, I think it would be worth it. Maybe even send them out to Joe Crane (if he would even be interested) for some port clean up.
The engine is a 434 inch 428 pump gas street engine with Auto Tec pistons from Brent designed with the TFS heads in mind for a compression ratio of 10-10.5:1 if I remember correctly.
It's going in my '67 Cougar with a Toploader 4-speed.
I'd really like 500 horsepower, which according to Brent is no problem with the TFS heads and Performer RPM intake along with the pretty mild custom cam I already have from him.
I realize I'll not get that with the factory iron stuff but I'd sure like to get as close as possible with it.
The reason I'm throwing this out there is, I already have the CJ parts and would not have to spend the extra cash (maybe between 2500-3000?) for the TFS heads, Performer RPM and rocker stands/assembly for the heads.
If I don't use the Cobra Jet stuff on this build, they'll probably never get used. And, as someone mentioned on my other thread, I could always swap heads and intake later.
Given the factoids presented above, if you were in my position, what would you do?
As always, thank you for any input and/or advise, guys.