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12-09-2012
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#11 |
  
Join Date: Feb 2010
Location: Pendleton, IN
Posts: 3,904
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Re: Engine Dyno info from Mercruiser
This is about as close as anyone will ever get to seeing actual Dyno numbers during the "development" of the LT5. This data is from Jan 88. This booklet was prepared for all meeting attendees for the "go ahead" to produce the production model of the LT5. This meeting was held at Lotus, in the UK, between GM and Lotus engineers.
This is the Holy Grail for us.   
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1988 KOH Prototype EX5023 sold 1990 ZR-1 #444 Convertible 1990 ZR-1 Black #966 1991 ZR-1 Quazar Blue #296 1957 Duntov SS Project Last edited by Blue Flame Restorations; 12-09-2012 at 02:41 PM. |
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12-09-2012
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#12 |
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Join Date: Feb 2010
Location: Pendleton, IN
Posts: 3,904
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Re: Engine Dyno info from Mercruiser
This is an actual LT5 Engine Build Booklet. This documents the entire build of the engine and is all hand written by the assembly technician. LT5 Engine 046. Look at the engine closely. There are several characteristics that differ from typical production LT5 motors.
  
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1988 KOH Prototype EX5023 sold 1990 ZR-1 #444 Convertible 1990 ZR-1 Black #966 1991 ZR-1 Quazar Blue #296 1957 Duntov SS Project Last edited by Blue Flame Restorations; 12-09-2012 at 01:16 PM. |
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12-09-2012
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#13 |
 
Join Date: Mar 2007
Location: Crystal Lake, IL
Posts: 7,194
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Re: Engine Dyno info from Mercruiser
Brett is this the stuff I scanned or more?
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LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359 |
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12-09-2012
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#14 | |
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Join Date: Feb 2010
Location: Pendleton, IN
Posts: 3,904
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Re: Engine Dyno info from Mercruiser
Quote:
The Engine Build Booklet was not scanned.
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1988 KOH Prototype EX5023 sold 1990 ZR-1 #444 Convertible 1990 ZR-1 Black #966 1991 ZR-1 Quazar Blue #296 1957 Duntov SS Project |
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12-09-2012
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#15 |
 
Join Date: Jun 2005
Location: pittsburgh
Posts: 4,632
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Re: Engine Dyno info from Mercruiser
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It's not the car, it's the people - Doug Johnson 90 r/r "KEYS ON" nick named "T.L.B" |
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12-09-2012
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#16 | |
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Join Date: Feb 2010
Location: Pendleton, IN
Posts: 3,904
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Re: Engine Dyno info from Mercruiser
Quote:
Neat piece, Kevin. Do you have a full page pic you can post?
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1988 KOH Prototype EX5023 sold 1990 ZR-1 #444 Convertible 1990 ZR-1 Black #966 1991 ZR-1 Quazar Blue #296 1957 Duntov SS Project Last edited by Blue Flame Restorations; 12-09-2012 at 02:04 PM. |
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12-09-2012
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#17 |
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Join Date: May 2007
Location: Chicagoland, IL
Posts: 9,708
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Re: Engine Dyno info from Mercruiser
Brett,
Yeah quite a few details that are different from production motor.
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[SIGPIC][/SIGPIC]Former Membership Chairman Former ZR-1 Registry - BOD 1972 Corvette 4speed base Coupe SOLD long time ago 1984 Corvette Z-51/4+3 SOLD 1992 Corvette ZR-1 Aqua/Gray #474 SOLD 1992 Corvette ZR-1 Black Rose/Cognac #458 2014 Honda VFR Interceptor DX |
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12-09-2012
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#18 |
Join Date: Sep 2012
Location: Rockwall, Tx
Posts: 1,510
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Re: Engine Dyno info from Mercruiser
I think we should collectively make another push. Especially considering that the old GM no longer even exists.
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_________________ 1994 AB/Grey #141 430 RWHP/392 RWTQ FBI Lyposuction / Secondaries relieved of duty / SW Long Tube Headers / Corsa Exhaust / FIC SS Injectors / MSD Coils / Lightweight Pulleys / Corey tuned B & M Shifter / Aluminum Flywheel / Samco Hoses / Shelby Series One's / C4 No Flex Frame Stiffener BBC - Bling By Carter: Custom ZR-1 Center Caps / Custom Plenum Plate / Air Box Knobs / TB Cover / Oil Filter Cover |
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12-09-2012
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#19 |
Join Date: Jan 2010
Location: Mystic CT
Posts: 2,633
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Re: Engine Dyno info from Mercruiser
Attached is what's in the NCRS archives for LT5 dyno sheets (also LT1). Many thanks to Bill Sangrey, the NCRS Archives Manager! OBTW, earlier this year Bill spoke with the NCM big wigs @ the NCRS Winter Regional in Florida and tried to "spring" the dyno sheets from the vaults of the NCM Library for us, unfortunately he wasn't successful
 If they won't give them to NCRS, they ain't giving them to anyone... It's easier to get "secrets" out of the Vatican...The attached "Interim Test Report" from GM Powertrain, done @ Lotus in Hethul England is the results of the dyno runs they apparently used when determining the advertised horsepower for the 1993 LT5. The LT5 stuff is several pages into the attachment after the LT1 stuff. Note: the LT5 put out 445.3 hp @ 6600 rpm!!! (pretty stout!!! I'm sure this is "at the crank" horsepower and who knows if any or all accesorries were installed?) My computer skills could use some work so I hope the attachments "work". I've never tried to attach a pdf file to a Forum post. If I screwed it up, I'm open to suggestions. Doug aka: Mystic ZR-1 |
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12-09-2012
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#20 |
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Join Date: Feb 2010
Location: Pendleton, IN
Posts: 3,904
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Re: Engine Dyno info from Mercruiser
Cool stuff!!!
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1988 KOH Prototype EX5023 sold 1990 ZR-1 #444 Convertible 1990 ZR-1 Black #966 1991 ZR-1 Quazar Blue #296 1957 Duntov SS Project |
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