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L31MaxExpress's latest activity
L31MaxExpress
reacted to
95 Tahoe's post
in the thread
AC Trial and Error
with
Like
.
The return at the accumulator is around 35-40 degrees. I add a little at a time until I get the lowest temp and stop. I have a slow...
Jul 6, 2024
L31MaxExpress
replied to the thread
AC Trial and Error
.
The evaporator is substantially warmer than the refrigerant boiling in it. I find there is about a 10-15* discrepency between...
Jul 6, 2024
L31MaxExpress
replied to the thread
AC Trial and Error
.
Cannot charge off pressures alone, need superheat and subcooling readings. I try to run 6-9F of superheat at the accumulator outlet. I...
Jul 6, 2024
L31MaxExpress
replied to the thread
AC Trial and Error
.
A properly functioning stock switch does not cut the compressor until ~22 psi. Should be seeing center vent temps of about 35-40F at...
Jul 6, 2024
L31MaxExpress
replied to the thread
AC Trial and Error
.
GM put parallel flow on the dual systems as well. The 01+ Express vans have them. The OSC 4721 units I have had are without question a...
Jul 6, 2024
L31MaxExpress
replied to the thread
AC Trial and Error
.
Microtube parallel flow is all I have used in the past ~5-10 years. They are much thinner and are much more efficient. A microtube...
Jul 6, 2024
L31MaxExpress
replied to the thread
5.7 vortec upgrade
.
Personal experience here, aftermarket EFI is overhyped GARBAGE and after a few years you can no longer get replacement parts for the...
Jul 6, 2024
L31MaxExpress
replied to the thread
5.7 vortec upgrade
.
0411 swap and AUS spider if you need to pass a visual for smog. I had the 48 lb/hr AUS spider running my 383 on E85.
Jul 6, 2024
L31MaxExpress
replied to the thread
Cam choice- LT1 or summit 8800?
.
This was my 97 Express years ago when it still had the 4L60E in it and a 3.42 rear gear. GM 142' LT4 cam, 1.6 rockers and shorty...
Jul 6, 2024
L31MaxExpress
replied to the thread
Cam choice- LT1 or summit 8800?
.
The LT1 cam makes more low-speed torque than many aftermarket cams. I went from a flat tappet MTC1 204/214 to the LT4 roller cam years...
Jul 6, 2024
L31MaxExpress
replied to the thread
0411 tune help for 7.4L
.
I tuned one a few years ago. I started with the timing tables and VE tables for an 8100. It actually ran fairly well on the 350 tune.
Jul 6, 2024
L31MaxExpress
replied to the thread
Timing chain set for 1997 C1500 5.7 Vortec - .280" or .400"?
.
Both will work, get a Cloyes 9-1157.
Jul 6, 2024
L31MaxExpress
replied to the thread
95 Suburban k2500 a/c orifice tube
.
The orifice tube you need depends on the truck and year model. if it is condenser mounted, you can use the GM Yellow condenser mounted...
Jul 5, 2024
L31MaxExpress
replied to the thread
Better AC with different size pulley?
.
I picked up a decent little Anemometer for $25-30 a few months back.
Jul 5, 2024
L31MaxExpress
replied to the thread
Better AC with different size pulley?
.
The 9 blade duramax fan pulls a lot more air.
Jul 5, 2024
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