ninetysixZ28

Will I have problems if I use a Milodon 180* high-flow thermostat on my 96 Z28 LT1?

Milodon 16401

moparman

The pic looks like the stat for a SBC. It will not work properly. The LT1 takes a specific stat.

mdacton

You need a LT1 specific thermostat

http://store.summitracing.com/partde...4&autoview=sku

seawolf06

And it won't change anything if you don't have your fans reprogrammed.

ninetysixZ28

Thanks! Installed new LT1.

ninetysixZ28

Thanks!

Working on getting a programmer but would like to just borrow someone elses just to reprogram fans.

I know that current settings should be:
PRIMARY: ON @ 226* OFF @ 221*
SECONDARY: ON @ 235* OFF @ 230*

What would the 'reprogram' settings be for a new 180* in South Texas heat?

Stl94LT1

If you are talking about a hand held programmer, they will only work on one car at a time. They can't be shared.

seawolf06

That's correct.

I have mine set at 82.25 and 86 degrees Celsius.

ninetysixZ28

Wasn't thinking...will get programmer...

Thats:

Primary: 82.25 on ?? off
secondary: 86 on ?? off

your thoughts on the offs? I'm new to this so if this is proprietary racing info then my apologies and nvm...

Injuneer

Since the stock t'stat in an LT1 is 180*F, and you replaced it with a new one of the same rating, changing the fan on/off temps is of questionable value. It would make more sense to reprogram the temps if you bought a 160. You definitely do not want to use the 82.25*C (180*F) and 86*C (186.8*F) temps with a 180* t'stat. It only starts to open at 180.... isn't fully open to ~200*F, so you would be reducing flow significantly with those low temps. If you feel you have to reprogram it, use temperatures above 200*F. Or get a 160.

seawolf06

Yeah, I'm using a 160* thermostat. With a programmer you won't have a choice of what temps, it just does it for you.

Programmers are generally understood on this site to be pretty worthless. You won't get any benefit from lowering the running temps on the car and the other gains are minimal. Spend your money on other mods and get a pcm tune when you feel the need.

Injuneer

Actually, the HPP offers two different sets of fan on/off temps, and dyno tests have shown that the only real HP gain from the programmer is seen when the 160*F t'stat is used. Still not a good "bang for the buck", but it does work.

ninetysixZ28

Thanks!

Will leave as is for now and go with 160*/reprogram later.

Have plenty of other issues to deal with.