Twin_Turbo

Anyone have a good source for sodium filled exh. valves? I can't seem to find anyone else but ferrea ... I also don't want to break the bank if I can avoid that

norvalwilhelm

They were standard equipment on 427 fords. Maybe a dealer still has a listing and they might be cheaper. I could check for you on Monday and see what my price would be?? I could buy them and ship them for you.

norvalwilhelm

I can get you an unreal price on Titanium valves. Rogers has a set for a small block but the intakes are 2.250 but they can be cut down. They were only used on a dyno engine for one testing. They are in great condition. I can get them for $100 CDN

Twin_Turbo

They are not std. SBC length. 100$ CDN is cheap.

ZD75blue

The VW guys run them all the time... but again, not SBC length...

:o

Older Than Dirt

The 1.55 exhaust valves used in the GM aluminum fast burn heads are sodium filled....p/n 12551313. The new LS7 uses 1.61 sodium filled exhaust valves also. Does this help?

lostpatrolman

the z06 heads use sodium filled vavles. Not sure if the will fit on sbc heads though.

Twin_Turbo

I'm kind of looking for a comnpany that makes them, I will have to custom order them, no problem but I can only find ferrea, I can't imagine that they're the only ones that make them.

ZD75blue

Fast burn heads...


http://www.superchevy-web.com/tech/0310sc_mouse/

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"The hollow-stem intake valves and sodium-filled exhaust valves are incorporated to reduce mass which allows for better valve control at higher rpm. We ordered our heads as a complete set with GMPP LT4/ZZ4 springs (101 pounds at 1.78 inches, 332 pounds at 1.22 inches) with lightweight LT4/ZZ4 retainers, and 3/8-inch screw-in studs."

ZD75blue

LT4... With part numbers
http://www.grandsportregistry.com/lt1vslt4.htm

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1.55" (39.4mm) Sodium filled stem Weight:75 grams, 2.65 ounces - Part number 12551313

ZD75blue

Heres the pricing for the LT4 valve...

$33.56 vs list GM price of 58.86

http://www.gmpartsdirect.com

Part number is 12551313

Twin_Turbo

wow, that ain't very cheap now is it.

tigers123

I realize they have made progress on metals in valves, but keep this in mind from a kid who grew up on a farm. My dad had an international harvester ton pickup truck [about mid fifties] that originally ran on propane. They put sodium filled valves in the motor to keep the valves cool when using propane. The truck was sold to my Dad after the propane was removed. He got along just fine with the truck until you got it stuck in the mud. He would wind the straight six up trying to get it out of the mud hole and drop a valve. The first time it did this the mechanic suggested removing all the sodium filled exhaust valves so it wouldn't happen again as he said a combination of the hollow stem and probably guide wear made the valve "dance" on the seat until it snapped the head off and dropped it at high rpm. It sounded plausible to me. However Dad being the "thrifty" guy he was said he didn't think that would happen again. We were back three times before it convinced him to get rid of the sodium filled exhaust valves. You may not have this trouble with new valves and guides, but how about later on down the road?