Electric water pump for the LT5? - ZR-1 Net Registry Forums

Paul in VA · 01-25-2012

Hi Everyone:

Would an electric water pump installation be possible on an LT5? Would it help solve the over 5000 RPM cavitation and lack of cooling at extended high RPMs? Any thoughts are welcome...

VetteMed · 01-25-2012

my understanding is that the higher rpm lack of cooling is dependent on the flow through the radiator, hence the "bypass" tube in the cooling system. I was under the impression that the pump that Lotus spec'd for the LT5 was capable of far more flow than the GM-spec'd radiator was capable of managing.

I've never seen an electric pump for the LT5...

XfireZ51 · 01-25-2012

Pete has been using one for several years.

Paul Workman · 01-25-2012

Quote:

Originally Posted by Paul in VA

Hi Everyone:

Would an electric water pump installation be possible on an LT5? Would it help solve the over 5000 RPM cavitation and lack of cooling at extended high RPMs? Any thoughts are welcome...

Pete, Kevin, and I believe possibly Al and maybe Bob G are using 'lectrics.

As I recall, Pete said he estimates approx 7-12 hp can be gained at WOT by making the switch to the electric; definately on my wish list...

Must be an FBI thing. It's a secret, so doan chew tell nobody, heaha?

P.

GOLDCYLON · 01-25-2012

Must be. Ok guys spill the details

VetteMed · 01-25-2012

wow, news to me... they've been pretty hush-hush about it, I guess.

Pete · 01-25-2012

I have been using ELectric Water Pump for about 4 years.
It's been working great for me.
I use a Stewart 55 GPM pump.

Pete

HAWAIIZR-1 · 01-28-2012

I do remember Pete did shared info about this a few years ago. Sounds like a great tech article for the HOTB and another secret how to achieve low 11s on a 350. Pete you are like an Einstein for the LT5!

Hib Halverson · 01-28-2012

Pete....when you ran an .04 and an .09, what was the air like?

What tire did you use on the back?
What's your axle?
What's the car weigh?

Pete · 01-29-2012

Quote:

Originally Posted by Hib Halverson

Pete....when you ran an .04 and an .09, what was the air like?

I don't know what the DA was on those days from what i can remember temps were either low 40's or low 50's, i never look at the DA when i go racing,the day at BG from what i remember was 80 maybe somebody that was at BG that year can refresh my memory and post up.

What tire did you use on the back?
Drag Radials with stock front wheels/tire size.

What's your axle?
11.04 & 11.09 passes were with stock rear gears 3.45
The Bowling Green run was with 4.10's

What's the car weigh?
I have done all the weight savings mentioned in Marc H's. site plus a few of my own i.e.94-95 door penals,sliders for stock seats etc. last time i checked she was about the same as C6 ZO6.

And....what is your shift point rpm?
Peak HP is 6800,shift light is set at 7200

Pete

01-25-2012	#1
Paul in VA Join Date: Sep 2010 Location: Sterling, VA Posts: 147	Electric water pump for the LT5? Hi Everyone: Would an electric water pump installation be possible on an LT5? Would it help solve the over 5000 RPM cavitation and lack of cooling at extended high RPMs? Any thoughts are welcome... __________________ Thanks ... Paul (Paul in VA) WAZOO Member

01-25-2012	#2
VetteMed Join Date: Mar 2009 Location: Orlando, FL Posts: 1,821	Re: Electric water pump for the LT5? my understanding is that the higher rpm lack of cooling is dependent on the flow through the radiator, hence the "bypass" tube in the cooling system. I was under the impression that the pump that Lotus spec'd for the LT5 was capable of far more flow than the GM-spec'd radiator was capable of managing. I've never seen an electric pump for the LT5... __________________ 2004 Z06/Z16 LeMans Commemorative Edition 1991 ZR-1 #302 White/Gray (sold) 1991 ZR-1 #1147 Red/Saddle (sold)

01-25-2012	#3
XfireZ51 Join Date: May 2007 Location: Chicagoland, IL Posts: 9,706	Re: Electric water pump for the LT5? Pete has been using one for several years.

01-25-2012	#5
GOLDCYLON Join Date: May 2007 Location: Peoria, AZ Posts: 9,147	Re: Electric water pump for the LT5? Must be. Ok guys spill the details __________________ GOLDCYLON - 91 ZR-1 #2014 GOLDCYLON - 90 ZR-1 #2794, 4L60e (Formerly Schrade's) GOLDCYLON - 11 CTS-V Arizona State Director 91 WHITE/BLACK #2014. 380 P&P&PCed,Ported Heads, Jeal Long tubes, Corsa Exhaust/FIKSE FM-5s /LED TLs, LED Headlights, Front Wilwood 6 piston narrowlite calipers and rear Wilwood caliper street shop mod,CNCed Coolant Pipes,TPI Cvr,Filter cover,Stainless Bolts, DRM/DOM PROM /ZFDOC mod build #102,DRLs,BMAD with stainless Debris Screen,Coplan Air Blaster, Pioneer APP Radio 4,Brey-Krause HB,Sub Bar,Fire extinguisher seat mount,DRM Coilovers,LEDs everywhere,Compass mirror (orange),V1 DIC hidden display, Homelink sun visor, Carbon Fiber top x3 and APSIS Carbon Fiber interior, APSIS CF Steering Wheel/NAPA Leather, Banski trailing arms, Guldstrand front suspension,urethane bushings from Prothane (total suspension) ZFDoc drive shaft safety loop, raptor shift light (orange),AO engineering louver front plate, Console seat cushion, 96CE seats with black custom Sheepskins, ss billet catch can,Viper remote entry/alarm,Cragar Rear Louvers,LED side louver lights, Dewitts Radiator with SPAL fans and a Woods 160 T-Stat 90 RED/BLACK #2794. 4L60e Automatic Stage V by RPM Transmission, TCI Dedicated TCM, OBX Stainless Headers, Corsa Exhaust, SAN Secondaries and Haibeck PROM, Exotic Muscle Coil overs, LED Interior Lights, LED Tail Lights, LED Headlights, 94 Sport seats with black custom Sheepskins , Cragar rear louvers, GS Front calipers, Banski Trailing arms, APSIS Carbon Fiber steering wheel, Front and Rear Baer Eradispeeds, DRLs, Guldstrand front suspension,urethane bushings from Prothane (total suspension), Dewitt's Raditor with Dual SPAL fans and a Haibeck 170 T-Stat 11 RED/GREY CTS-V

01-25-2012	#6
VetteMed Join Date: Mar 2009 Location: Orlando, FL Posts: 1,821	Re: Electric water pump for the LT5? wow, news to me... they've been pretty hush-hush about it, I guess. __________________ 2004 Z06/Z16 LeMans Commemorative Edition 1991 ZR-1 #302 White/Gray (sold) 1991 ZR-1 #1147 Red/Saddle (sold)

01-28-2012	#8
HAWAIIZR-1 Join Date: May 2010 Location: Japan Posts: 3,569	Re: Electric water pump for the LT5? I do remember Pete did shared info about this a few years ago. Sounds like a great tech article for the HOTB and another secret how to achieve low 11s on a 350. Pete you are like an Einstein for the LT5! __________________ Craig "ZR-1 NO KA 'OI" "ZR-1 ICHIBAN" 1995 #228 Black/Black with Dunn Heads ZR-1 owner since September 2003 ZR-1 Net Registry Founding Member #0074 NCM Lifetime Member #2048

01-28-2012	#9
Hib Halverson Join Date: Jun 2005 Location: CenCoast California Posts: 899	Re: Electric water pump for the LT5? Pete....when you ran an .04 and an .09, what was the air like? What tire did you use on the back? What's your axle? What's the car weigh? __________________ Hib Halverson Technical Writer former owner 95 VIN 0140 current owner 19 VIN 1878

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