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05-22-2015
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#21 |
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Join Date: Jun 2013
Location: Toronto
Posts: 782
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Re: 427 LT5 Build 2 underway
Very cool
 Silly idea but thought I'd mention it anyways I was thinking to run a pcv hose from the rear all the way back to the tire tray and put a big reservoir of some sort like a fuel cell where the spare tire goes to increase the volume in the system. All I did for now is run a vacuum line all the way to the front of the car ahead of the wheel where I put a catch can hoping to increase volume slightly and catch some oil.
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05-23-2015
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#22 | |
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Join Date: Aug 2005
Location: Fishers, IN
Posts: 779
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Re: 427 LT5 Build 2 underway
Quote:
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05-26-2015
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#23 |
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Join Date: Aug 2005
Location: Fishers, IN
Posts: 779
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Re: 427 LT5 Build 2 underway
Look what showed up today. Without a doubt, I would say it is impossible to fit any larger intake valves in the LT5. New Beryllium Copper valve seats. 41.5mm intake valves, 35.5mm exhaust valves.
   376 cfm @ .500" 390 @ .600 |
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05-26-2015
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#24 |
Join Date: Aug 2005
Location: Scottsdale, AZ
Posts: 2,450
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Re: 427 LT5 Build 2 underway
WOW!
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05-26-2015
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#25 | |
 Join Date: Nov 2011
Location: Dunbarton NH
Posts: 7,256
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Re: 427 LT5 Build 2 underway
Quote:
What is the stock size? |
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05-26-2015
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#26 |
 
Join Date: Mar 2007
Location: Crystal Lake, IL
Posts: 7,191
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Re: 427 LT5 Build 2 underway
My Todd, what big valves you have....
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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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05-26-2015
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#27 |
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Join Date: May 2007
Location: Chicagoland, IL
Posts: 9,666
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Re: 427 LT5 Build 2 underway
Todd,
Absolutely stunning! The copper beryllium seats are gorgeous.
__________________
[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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05-26-2015
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#28 |
 Join Date: Jun 2005
Location: CenCoast California
Posts: 899
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Re: 427 LT5 Build 2 underway
Those seats are pretty, for sure but wow, the larger valves really "slimmed down" the valve bridges. At the 800-hp level do you have any concerns about keeping those parts of the head cool?
Of course, I guess duty cycle is an issue, too. If all this engine will be is a drag racer then maybe there's no problem But if you're going to do long periods of WOT, i.e.: standing mile events, things are going to get pretty darn hot....
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Hib Halverson Technical Writer former owner 95 VIN 0140 current owner 19 VIN 1878 |
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05-29-2015
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#29 |
 Join Date: Aug 2012
Location: Boone County, Indiana
Posts: 132
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Re: 427 LT5 Build 2 underway
What an impressive build. I live over in Boone County, near Zionsville. Is the engine being assembled in Fishers? If so, I'd love to be around when that jewel is fired for the first time....
It is always exciting to hear the sound a new engine makes when it first comes to life... I used to work around IndyCar for a few years, through the Chevy Indy v8's, the Buicks, the Aurora (a monster of an engine), the Infinity v8, and of course Toyota and Honda....etc., It gets in the blood, for sure. |
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02-24-2016
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#30 |
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Join Date: Aug 2005
Location: Fishers, IN
Posts: 779
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Re: 427 LT5 Build 2 underway
Guys,
Just a quick post to let you know that from January, I've started a business focused on the LT5. I intend to have a blog dedicated to build 2. If things go as planned, I'll have more to display at BG this year. Hope you can click over to the website, and contact me if you have any questions. PS. I did ask the mods if this was ok, and never got a response. Apologies in advance if this violates any forum rules. Thanks.
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Todd ____________________________________ *** our email address has changed! info@pepmeierengines.com pepmeierengines.com Friend us on Facebook too: www.facebook.com/profile.php?id=100011443683384 Pepmeier Engine Development |
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