07-31-2015 | #51 |
Join Date: Sep 2012
Location: Rockwall, Tx
Posts: 1,510
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Re: LT5 engine upgrade question
I put 430 down to the wheels before I put on the Corsa. I haven't redynoed but if I lost 12hp I'm ok with that. I was damn near deaf on my first trip to BG with my old exhaust and I couldn't even use the radio because of the drone. Everything is peachy with my Corsa and I can still keep up with most things on the road so it works. For me, anyway.
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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 |
08-01-2015 | #52 | |
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: LT5 engine upgrade question
Quote:
I didn't loose any performance vs. stock numbers compared to results others have posted. But, I sure as hell didn't gain any 50-60 hp performance boost as result of the Borla!
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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 Last edited by Paul Workman; 08-01-2015 at 08:07 AM. |
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08-01-2015 | #53 | |
Join Date: Jul 2005
Location: Basel/Switzerland
Posts: 152
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Re: LT5 engine upgrade question
Quote:
I did the experience that 350 cui engines loose some low end torque with headers and a open 3 Inch exhausts. Sam
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Sam DR.Z/LT5-Performance 1990 #1822 with 383 cui Last edited by SAM/CH ZR-1; 08-01-2015 at 11:20 AM. |
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08-01-2015 | #54 | |
Join Date: Jul 2005
Location: Jupiter, Fl.
Posts: 815
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Re: LT5 engine upgrade question
Quote:
I installed the Borla "so called" 2 3/4" system in 1995. Sounded great, but no real improvement. It wasn't until I went with the B&B, with headers and no cats that the car really woke up. Light, single mass flywheel, and 3" inch exhaust. They sure do help the stock LT5,.....but the Fing PAIN..
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"It's about the car, not the people." 1991 ZR-1 White/Black #1236 (Owner since 1994). Stock engine with bolt-ons: Hurst shifter,"Forced Air" intake, Coplon duct, Bee Cool Radiator, Demon coils, Jeal prom, Watson headers, X pipe, 3" B&B's, Rippie flywheel, 4:10 gears, A molds, Toyo Proxes-R888's 12.06@117mph. 1.76 60ft. |
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08-01-2015 | #55 | |
Join Date: May 2007
Location: Chicagoland, IL
Posts: 9,700
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Re: LT5 engine upgrade question
Quote:
Did you update the tune to optimize for the difference in backpressure?
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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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