35's and Engine Cooling - moved from whoring
- Thread starter TBLS
- Start date
Porkins
Member
- Dec 5, 2011
- 6,960
I assume you are talking a trans cooler? PCMforless iirc sells full kits.TBLS said:
PCMofNC sells a trans cooler and e-fans. If you are talking about the engine and coolant temp, you are talking about the e-fans.TBLS said:
Well if you wanna keep everything cool engine wise, E-fans. A trans cooler couldn't hurt, if you ever think you might tow something
Have you checked ORTB.com? Never heard of anyone having to install efans to run 35s. Who told you that? I am sure HT will know more than anyone for sure.TBLS said:
HARDTRAILZ
Moderator
- Nov 18, 2011
- 49,665
HARDTRAILZ
Moderator
- Nov 18, 2011
- 49,665
35s need lower gears and a trans cooler. Figure a grand or two to do it right.
- Dec 29, 2013
- 1,075
Oh I have plans of towing a lot of things.Capote said:
I can't remember who told me that. It was someone from ORTB if I remember correctly.dmanns67 said:
If that's the case then I won't do anything.HARDTRAILZ said:
If it's gunna take that much I'll just do the E-fan and trans cooler and run 33s. I'm just a stickler for big tires and lifted trucks. I'm obsessed with beefy, mean looking trucks. Call it little redneck country gal syndrome if you'd like but it's just as bad as my diesel obsession lol. Gotta love Prius repellent, mmmmmhmmmmmm. Weird I know.HARDTRAILZ said:
Mounce
Member
Really, there's absolutely no reason to get efans. Only people that have them are the guys that mod every single part of the vehicle and have disposable money or have a turbo and need the extra room. The OEM fan does a good job cooling the engine. What the other person wherever it was that told you that you needed an engine mod to run 35's was talking about a transmission cooler because the bigger tires will work the transmission harder and make it hotter.TBLS said:
- Dec 29, 2013
- 1,075
Thank you for a straight forward answer.Mounce said:Really, there's absolutely no reason to get efans. Only people that have them are the guys that mod every single part of the vehicle and have disposable money or have a turbo and need the extra room. The OEM fan does a good job cooling the engine. What the other person wherever it was that told you that you needed an engine mod to run 35's was talking about a transmission cooler because the bigger tires will work the transmission harder and make it hotter.
Where was it that I needed to go to find one? Maybe I'll just scroll back through and find it?
djthumper
Administrator
If you only have 3.42 gears, 32" should be the max even with a transmission cooler. You have to consider the terrain you are in.
No one on ORTB said anything of needed E-fans. I recommend this conversation be taken to an actual Tech thread.
No one on ORTB said anything of needed E-fans. I recommend this conversation be taken to an actual Tech thread.
HARDTRAILZ
Moderator
- Nov 18, 2011
- 49,665
Considering Efans are less efficient cooling this platform I would not recommend them w bigger tires at all...
Sparky
Member
- Dec 4, 2011
- 12,927
I have 32s and the 3.42 gears and I definitely wouldn't want to go any taller without regearing the truck.
I'd like my next truck to have 3.73 even staying with 32s just because it would help the low RPM range a bit.
I'd like my next truck to have 3.73 even staying with 32s just because it would help the low RPM range a bit.
Grimor
Member
- Mar 28, 2013
- 954
on the street i didn't notice any problems with 3.42 and big tires other than speedo being off and a bit slow off the line. i monitored my trans temp and didn't see any spikes but i do have a trans cooler. I wouldn't want to tow or off road with 3.42 and anything over 32" personally.
other than cost of the front diff and rear, it's not a hard swap if you do the entire axle. I think 4.10 and ~34" puts you close to right on the speedo too
other than cost of the front diff and rear, it's not a hard swap if you do the entire axle. I think 4.10 and ~34" puts you close to right on the speedo too
HARDTRAILZ
Moderator
- Nov 18, 2011
- 49,665
SmokeyMcBlazer
Member
- May 5, 2013
- 434
Do you have the 3.42 gears? It'll be listed on a sticker in the glove box. Look for GU6 (3.42), GT4 (3.73) or GT5 (4.10).
HARDTRAILZ
Moderator
- Nov 18, 2011
- 49,665
Mooseman
Moderator
Reluctantly, I have to agree on the efan question even though I did it to my TB. The only thing I would recommend is if your current EV fan clutch fails, replace it with an '08 clutch, which is an old fashioned viscous clutch and get your PCM tuned. You can get the error codes taken out and also get a performance tune at the same time. Well worth it.
I have since put a viscous clutch back into the TB and don't plan on adding efans to the Saab. My biggest problem was getting a seamless and automatic operation of the efans with the A/C.
I have since put a viscous clutch back into the TB and don't plan on adding efans to the Saab. My biggest problem was getting a seamless and automatic operation of the efans with the A/C.
Mooseman
Moderator
Oh, and don't listen to anybody as far as swapping diffs is easy. The rear, yes but the front is a PITA. The manual calls for the removal of the oil pan. I did it and I would rather drive it off a cliff than do it again.
http://gmtnation.com/forums/topic/12230-how-to-remove-i6-oil-pan-in-vehicle/
http://gmtnation.com/forums/topic/12230-how-to-remove-i6-oil-pan-in-vehicle/
HARDTRAILZ
Moderator
- Nov 18, 2011
- 49,665
Yep. Sucks. Regulator found easiest way is out through the top of engine compartment.
Mounce
Member
Mooseman
Moderator
