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05-01-2013
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#1 |
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Join Date: May 2007
Location: Chicagoland, IL
Posts: 9,708
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Initial thoughts on Pete's Intake/Exhaust cam combo
They're very nice.
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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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05-02-2013
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#2 |
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Join Date: May 2007
Location: Chicagoland, IL
Posts: 9,708
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Re: Initial thoughts on Pete's Intake/Exhaust cam combo
With each successive calibration update, the car gets more fun to drive. Idle is at about 875-925 but the roughness of it has been calmed down. Throttle is very responsive. Fifth gear feels like fourth or even third. No hesitation when I hit the loud pedal. Moving off from a standstill feels as if there is more bottom end. I can drive the car in 6th gear at 8-900 rpm w no lugging. It's blubbery, but it will pull,until it starts to accelerate more normally. At cruise, the motor is pretty quiet and smooth. A few more runs to hone the tune further but it's getting pretty close. Exhaust note makes radio unecessary. Next up will be WOT.
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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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05-02-2013
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#3 |
  
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: Initial thoughts on Pete's Intake/Exhaust cam combo
Sounds great! Looking forward to your dyno numbers next!
P.
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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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05-02-2013
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#4 |
 Join Date: Nov 2011
Location: Dunbarton NH
Posts: 7,479
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Re: Initial thoughts on Pete's Intake/Exhaust cam combo
Dom, what did you have done?
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05-02-2013
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#5 |
 
Join Date: Dec 2003
Location: Chicagoland,IL
Posts: 2,679
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Re: Initial thoughts on Pete's Intake/Exhaust cam combo
Hi Dom
I hear you need to give the car a push start from stop lights.  Pete
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'91 #1635 PoloGreen 350 LT5 11.09 @ 129.27 11.04 @ 128.86 474RWHP 400RWTQ http://www.youtube.com/watch?v=SFNFOhGGlR4 http://www.youtube.com/watch?v=ZlRIOMwaDYY https://sites.google.com/site/peteszr1garage |
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05-02-2013
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#6 |
Join Date: Mar 2004
Location: Found Member
Posts: 4,346
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Re: Initial thoughts on Pete's Intake/Exhaust cam combo
SSHHHHHHHHhhhhhhh Stop talking about Pete........he's here now !
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Frank Urbo. NCM Lifetime member # 982 Registry Founding # 237 |
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05-02-2013
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#7 | |
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Join Date: May 2007
Location: Chicagoland, IL
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Re: Initial thoughts on Pete's Intake/Exhaust cam combo
Quote:
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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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05-02-2013
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#8 |
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Join Date: Aug 2005
Location: Fishers, IN
Posts: 815
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Re: Initial thoughts on Pete's Intake/Exhaust cam combo
Go bigger. You need some 255's on the intake, and at least .500 lift to get the ports working....
 I'm planning an upgrade path for the 427. Think 800 N/A is within reach? Who needs streetability? T |
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05-02-2013
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#9 |
Join Date: Mar 2007
Location: Crystal Lake, IL
Posts: 7,194
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Re: Initial thoughts on Pete's Intake/Exhaust cam combo
The new Ford 5.0 DOHC uses performance cams with .497 intake lift and .453 exhaust.....
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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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05-02-2013
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#10 | |
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Join Date: May 2007
Location: Chicagoland, IL
Posts: 9,708
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Re: Initial thoughts on Pete's Intake/Exhaust cam combo
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Actually Pete's current cams are larger than these. He tells me the cams now installed on my motor are the ones that did a 129 trap. He thinks he's at a six of one, half a dozen of the other situation on cams for a 5.7L motor. Would you keep exhaust as is, or go bigger on yours? What overlap are you planning on? Be interesting to get Behan's view
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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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