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#1 |
Join Date: Oct 2018
Location: Indiana
Posts: 47
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So I am dreaming of what my next z should be. I remember some (not a lot) of C4 Zr-1 that had high over lap cams and sound great at idle and at 7,000. I couldn't find the YouTube videos. Anyone have good sound videos of their or others cammed Z's? Also I never driven a cammed Z. How the power curve/drivability.
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#2 |
Join Date: Sep 2018
Location: Florida
Posts: 304
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I have been thinking about this lately as well. Although in most cases, I believe heads are ported along with the cams. I have everything opened up, but the heads. The idea of the changed idle with cams and the shifted power range is still intriguing.
I hate to not try it if I already had the engine out of the car and cam covers off, but it is probably a cart before the horse idea, without ported heads. |
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#3 |
Join Date: May 2007
Location: Chicagoland, IL
Posts: 9,696
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Stage 1 Dr. Greekenstein cams, fully ported, headers, Xpipe, Magnaflow muffs w C6 Z06 NPP valves.
https://youtu.be/LYgBSTyLd9I?si=MGVLn-aDQA3kmJEn
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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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#4 |
Join Date: Aug 2005
Location: Fishers, IN
Posts: 809
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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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#5 |
Join Date: Oct 2018
Location: Indiana
Posts: 47
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The only thing I don't love about LT5 vs SBC is the amazing noises a high compression wide duration cam sounds on a SBC. Just curious about similar duration on LT5. Thanks @xfireZ51. Sounds good. Any revs or runs?
Also is that still 350 CID? Last edited by bmarcum; 06-23-2024 at 03:56 PM. |
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#6 |
Join Date: May 2007
Location: Chicagoland, IL
Posts: 9,696
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The sound of a cammed SBC is due to the necessity for high lift/ long duration to get the breathing. 4 valves do that for the LT5, so cam profile can be relatively mild in comparison for similar or better performance.
Yes its a stock block 5.7L. Dyno?d at 454rwhp@6875rpm and 402rwtq@5300rpm.
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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; 06-23-2024 at 04:29 PM. |
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#7 |
Join Date: Oct 2018
Location: Indiana
Posts: 47
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WOW 454rwhp nicely done! I bet that is a ball. is that the car on your YouTube post?
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#8 |
Join Date: May 2007
Location: Chicagoland, IL
Posts: 9,696
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Yes it is. The video was b4 tuning. Makes u think of what GM could have done continuing to develop that platform. Its the way it should have come from the factory.
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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; 06-23-2024 at 10:25 PM. |
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#9 |
Join Date: Oct 2018
Location: Indiana
Posts: 47
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I couldn't find Stage 1 Dr. Greekenstein cams are they pepmeierengines.com cams? Or are they Pete the greeks? I remember reading about Pete work sometime ago?
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#10 |
Join Date: May 2007
Location: Chicagoland, IL
Posts: 9,696
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Dr. Greekenstein is my name for Pete ZR-1 work.
__________________
[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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