Ok, this is what I need. Hi-flow thermostat. Its the smaller 2 1/8" dia. I want the hi flow one that has the 3 support 'balanced' stem. The bottom is large and opens up to allow more coolant flow. I have a Hi flow water pump on one of my motors and need to use the hi flow Tstat.
Also, I would much more like to get it from O'Reilly's or Auto Zone and need stock/item #s for it. I do NOT have a Napa close to me. I don't really wish to order it on line because of cost - shipping or getting the wrong part. Last thing I wish to do is having to sent it back... ;o( Happens to me all the time.
Need 180 deg.
I'm sure someone must have the #s. The kids at AZ/O'Reilly are nice kids but they are just that, kids - NO experience aside from that darn computer.

Thanks guys

 

anyone...? anyone...? Buller Buller anyone...?

 

You said 2 1/8" diameter while 1965/66 F100/350 352 t/stats are 2 1/2" diameter.

 

Bill, I'm using an Edelbrook intake and a 68 Tstat housing which has the smaller 2 1/8 dia indent in the Tstat housing. I'm looking for the Hi-flow Tstat. it has the larger part of it that opens rather than the small part that opens

 

No one? Something I said? Hmmm.

 

Suggest contact NAPA, or local auto part supplier and provide them the spec's, they should be able to match a thermo that meets your application?? Posting link to Stewart high flow only because their online catalog offer spec's; whereas, most of the other supplier's; i.e., Summit, Jegs, etc., do not. Stewart item description mentions themo should only be used w/ their water pump but the tech page seems to imply otherwise, I would use their free contact tele # just to verify but certainly would not purchase from them, cost of shipping is more than the price of the part; however, perhaps local or Napa can use the PN for a cross reference??? Another option would be to use the Summit free contact #, give them the spec's and they should be able to come up with a high flow thermo match; they offer free shipping and don't think they charge any Ca. tax. Anyhow, felt a need to post something, probly of no help, but did not want to give impression you have offended FTE members.

The catalog offers thermo in various degrees just pulled up the 180 as example:

Stewart/Robert Shaw Thermostats - 301: Stewart Components, Inc.

Stewart Components - High Performance Automotive Cooling

 

I'm not offended either, just clueless.

 

Thank you for posting that Dave, I see if I can match it up with one they have on hand. I also practice drilling a small hole in the flat part of the Tstat housing ad position it at 12oclock. It allows trapped air to get out form behind the Tstat. Do the same thing with motorcycles Tstats.