Do Higher RPM's = Lower EGT's Towing Uphill

BoiseRob · 07-27-2007, 06:47 AM

I will be towing 8000#'s up a 4 mile, 6% grade this weekend. If I put the trans in 4th gear, will it's higher RPM's lower the EGT? Thanks for the help...

BoiseRob

**ob_1jr** · 07-27-2007, 08:14 AM

in most cases yes...the EGTs usually get higher when you "lug" the engine. Usually when you get a higher boost pressure it lower the EGTs. The only way to really know is to install a boost guage. Athough, I don't think you would have anything to worry about with the truck in stock form. The EGTs shouldn't get high enough to do any damage to the engine unless you were going to try to pull that hill in 6th gear, but I don't even think it would hold 6th all the way up the hill. Personally, I would just lock out 6th gear and just drive it up the hill....but that's just me.

07-27-2007, 06:47 AM	eBay Motors #1 (permalink)
BoiseRob Senior Member Join Date: Mar 2007 Location: Boise, Idaho Posts: 214	Do Higher RPM's = Lower EGT's Towing Uphill I will be towing 8000#'s up a 4 mile, 6% grade this weekend. If I put the trans in 4th gear, will it's higher RPM's lower the EGT? Thanks for the help... BoiseRob __________________ 2007 2500HD "Classic" 4x4, LBZ/Allison, CC/SB, Nerf Bars, Billet Grille & Emblem, Tinted Windows, Incubus Rims, 265/75R16 BFG A/T, AFE Filter, Bilstein Shocks, TransGo Jr. & Mike L. cooler installed by Mike L., MBRP T-409 4" Cat-Back, PPE Blocker Plate & EFILive tuned by IdahoRob... 473hp & 920ft/lbs

07-27-2007, 08:14 AM	eBay Motors #2 (permalink)
ob_1jr Administrator Join Date: Aug 2005 Location: Aviano Italy Posts: 8,368	in most cases yes...the EGTs usually get higher when you "lug" the engine. Usually when you get a higher boost pressure it lower the EGTs. The only way to really know is to install a boost guage. Athough, I don't think you would have anything to worry about with the truck in stock form. The EGTs shouldn't get high enough to do any damage to the engine unless you were going to try to pull that hill in 6th gear, but I don't even think it would hold 6th all the way up the hill. Personally, I would just lock out 6th gear and just drive it up the hill....but that's just me. __________________ SOLD 2004 GMC 2500HD D/A CC Carbon Metallic w/ LB7 4" turbo back MBRP exhaust, Cognito UCAs & HD tierods TST Powermax Programmer, Diablosport Predator 305/70-16 BFG T/A KOs on Eagle Alloys Series 187 Clifford remote start. High Idle, Bilstein 5100s, 1.5" lift blocks CAT fuel filter w/ nicktane adapter Magnum Force Stage 2 intake with AMSOIL filter Racor 2 Micron pre-OEM with heater & water sep Lightforce 140s from Madjackracing http://WWW.ATPTRUCKS.COM/

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