ac evaporator question

[tomtuna1978]

sorry if this has alredy been asked, i did a search... manny searches, and came up with nothing. i read someware that someone converted their factory air evaporator to a orface tube design from a newer truck, like an 87 blazer or truck. my question is how hard was this and what year and model evaporaror are you using? thanks for anny help... i just got a 69 c10 long bed and it has factory air and id like to do ths mod as i know the orface tube system like the back of my hand and can get it blowing ice out the vents

[leddzepp]

You are talking about a POA upgrade kit. It is used with the factory evaporator coil. Here is what it looks like. It will not make your A/C system blow any cooler than the original POA valve.

[Lugnut64052]

I'm planning on re-making my system into a CCOT setup when I get the air going. Mosesburb figured out the parts to use in his excellent build thread.

Evaporator number is an ACDelco 15-6249. Long GM number is 3035171. It fits '77 Montes, Chevelles and Impalas. According to mosesburb it lays right in there but is a row or two shorter, so you'll have to fab a small bracket to weatherstrip it properly.

Accumulator number is ACDelco 15-1648. Fits many late '80s & early '90s mid-sized sedans.

Question back to you-- what are you planning to use for a condenser? The factory one or a different shape/style?

[tomtuna1978]

i was thinking of using like a 95ish 1500 truck condencer because it is all reddy for 134

[john]

Heres a link to the orifice upgrade kit. http://www.oldairproducts.com/catalo...00_407_4071972

[tomtuna1978]

ok guys ... lets get this strait... i dont want to upgrade the old poa valve... i want to convert to a orface tube evaporator.

[Lugnut64052]

Originally Posted by tomtuna1978

i dont want to upgrade the old poa valve... i want to convert to a orface tube evaporator.

Not sure what you're getting at . . . why would you keep the POA valve and install an orifice tube friendly evap?

[tomtuna1978]

I don't want to keep the poa valve ... I want to convert the whole system to a orface tube system

[Lugnut64052]

Okay, then the two part numbers I posted earlier will work. Surf over to mosesburb's build thread and look at the first picture in post #7. You can even see the orifice tube dimples on the inlet of that evap. The accumulator will screw right onto the outlet.