3500 stainless steel valves

Federal Mogul Pdf Files For Valves

Here is an excerpt taken from GMs site, ethanol not methanol sorry, though the effects maybe similar. I recall reading a more updated source on it that mentioned some kind of processing that makes them more resistant to corrosion.

"The standard valves and valve seats are durable enough to withstand the long-term corrosive effect of E85 ethanol, so no upgrade is necessary"

The pdf files make it much easier to see what larger valve sizes may work for the heads.

[SappySE107]

Yes, they are the same size. Id like to know more about these methanol valves.

are the 3500 valves the same size? what companies are you all buying the valves from?

Federal Mogul has a good price on OE valves and seats and when I get back on a fast net service I'll try and post their pdf of all of their valves listed in numerical order which includes all of their important specs. According to GM the valves in the heads designed for methanol use have a special treatment making them a bit tougher due to the need to be corrosion resistant so they are probably pretty good for extreme conditions.

[rickykline]

are the 3500 valves the same size? what companies are you all buying the valves from?

[SappySE107]

1.76 and 1.42 for a 3400 head.

[rickykline]

if i wanted to replace my stock valves with ss valves what sizes would i get?

[SappySE107]

150 any size. I should have them on the store. You can go 1.8/1.52, or possbily 1.84/1.42 but you have to install new seats if you go 1.84. Price includes grinding work to make them flow a little better.

[rickykline]

where can i find them? what size are the valves? how much am i looking to spend on ss valves?