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02-11-2018
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#1 |
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Join Date: Aug 2005
Location: Fishers, IN
Posts: 815
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Winter build Stock CID project
Here's some eye candy from the new project. Stock pistons, machined for valve reliefs. This will make room for a fairly aggressive cam lift. Wonder what's possible from 350cid???
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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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02-11-2018
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#2 |
 Join Date: Nov 2011
Location: Dunbarton NH
Posts: 7,486
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Re: Winter build Stock CID project
Do we know what the current hp leader is for 350 CID LT5?
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02-11-2018
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#3 |
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Join Date: Aug 2005
Location: Fishers, IN
Posts: 815
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Re: Winter build Stock CID project
Not really. I don’t believe anyone has tested one on an actual engine dynamometer. I plan to test this one.
Sent from my iPhone using ZR-1 Net Registry
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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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02-11-2018
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#4 |
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Join Date: Nov 2011
Location: Dunbarton NH
Posts: 7,486
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Re: Winter build Stock CID project
I'm currently 451 at the wheels and didn't think there was much left without adding cubes. Maybe a little more with more aggresive cams. Which of course is exactly what you are looking for.
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02-11-2018
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#5 |
 Join Date: Aug 2014
Location: Kansas City, MO
Posts: 838
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Re: Winter build Stock CID project
Problem with really aggressive cams, that if it requires piston mods you have to teardown the motor anyway.
You should be able to squeeze almost 100hp/liter with a tricked out engine.
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Looking for a ZR-1 1985 Yamaha RZ350-NOT STOCK 1971 Yamaha AT1-Middle of a restoration |
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02-11-2018
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#6 |
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Join Date: Nov 2011
Location: Dunbarton NH
Posts: 7,486
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Re: Winter build Stock CID project
At 15% loss, I calculate to 530. That's 93 per liter. I'm not sure I'd want more cams and still have to drive it on the street.
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02-11-2018
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#7 |
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Join Date: Aug 2015
Location: Magnolia, Texas
Posts: 884
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Re: Winter build Stock CID project
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02-12-2018
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#8 | |
 
Join Date: Nov 2007
Location: Squires (near Ava MO in the Mark Twain N'tl Forest) - Missouri
Posts: 6,493
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Re: Winter build Stock CID project
Quote:
Using the same math, that would tickle 557+ @ the crank, and his 11.04 at 129+ in the quarter, and IIRC* ~156 mph(?) in the half mile. I don't know whether Pete has "eyebrow" cut his pistons or not. But, his 350 put on quite a show at many events, including BG! One of his runs at Byron before the last mods. https://www.youtube.com/watch?v=SFNFOhGGlR4 He says he keeps the secret in a Mason jar buried in the back yard. 
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Good carz, good food, good friendz = the best of timez! 90 #1202 "FBI" top end ported & relieved Cam timing by "Pete the Greek" Sans secondaries Chip & dyno tuning by Haibeck Automotive SW headers, X-pipe, MF muffs Former Secretary, ZR-1 Net Registry |
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02-12-2018
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#9 |
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Join Date: May 2007
Location: Chicagoland, IL
Posts: 9,708
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Re: Winter build Stock CID project
I believe Pete’s numbers use SAE correction.
Todd, Are u thinking larger valves as well? Increase lift on Intake or Exhaust or both?
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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 Last edited by XfireZ51; 02-12-2018 at 10:06 AM. |
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02-12-2018
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#10 | |
Join Date: Jul 2007
Location: Bartlett, IL
Posts: 7,169
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Re: Winter build Stock CID project
Quote:
 But those videos are from Union Grove 
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1990 Corvette ZR-1 #1051 Watson Headers (2" Primary) - Flowmaster Cats - Borla Catback Late Model IH - Plenum Coilovers - 4.10s Custom Interior NCM Lifetime Member #978 |
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