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#1 |
Join Date: Feb 2008
Location: Vancouver, BC
Posts: 251
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I wanted to get a baseline on my car before doing anything further. The car to my knowledge is stock with the exception of a Flowmaster Cat back exhaust and a revised prom (prom was intended to fix idle and CAGS). Despite what the legend says - I am assured that the values are RWT and RWHP.
What could I expect with a good top end port (which is what I am thinking planning) - close to 400? |
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#2 |
![]() Join Date: Jul 2005
Location: Mendota Heights, MN. 55120
Posts: 983
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My '90 with top end ported and headers put down 399.78 rwhp. Also has the the K & N air filter.
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#3 |
Join Date: May 2007
Location: Chicagoland, IL
Posts: 9,686
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My 92 put down 399/357tq with top end, Watson 1 7/8" headers and Magnaflow cat back including resonator. We found later that the cams were out of phase Left/Right.
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#4 | |
![]() ![]() Join Date: May 2007
Location: Peoria, AZ
Posts: 9,119
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__________________
GOLDCYLON - 91 ZR-1 #2014 GOLDCYLON - 90 ZR-1 #2794, 4L60e (Formerly Schrade's) GOLDCYLON - 11 CTS-V Arizona State Director ![]() 91 WHITE/BLACK #2014. 380 P&P&PCed,Ported Heads, Jeal Long tubes, Corsa Exhaust/FIKSE FM-5s /LED TLs, LED Headlights, Front Wilwood 6 piston narrowlite calipers and rear Wilwood caliper street shop mod,CNCed Coolant Pipes,TPI Cvr,Filter cover,Stainless Bolts, DRM/DOM PROM /ZFDOC mod build #102,DRLs,BMAD with stainless Debris Screen,Coplan Air Blaster, Pioneer APP Radio 4,Brey-Krause HB,Sub Bar,Fire extinguisher seat mount,DRM Coilovers,LEDs everywhere,Compass mirror (orange),V1 DIC hidden display, Homelink sun visor, Carbon Fiber top x3 and APSIS Carbon Fiber interior, APSIS CF Steering Wheel/NAPA Leather, Banski trailing arms, Guldstrand front suspension,urethane bushings from Prothane (total suspension) ZFDoc drive shaft safety loop, raptor shift light (orange),AO engineering louver front plate, Console seat cushion, 96CE seats with black custom Sheepskins, ss billet catch can,Viper remote entry/alarm,Cragar Rear Louvers,LED side louver lights, Dewitts Radiator with SPAL fans and a Woods 160 T-Stat 90 RED/BLACK #2794. 4L60e Automatic Stage V by RPM Transmission, TCI Dedicated TCM, OBX Stainless Headers, Corsa Exhaust, SAN Secondaries and Haibeck PROM, Exotic Muscle Coil overs, LED Interior Lights, LED Tail Lights, LED Headlights, 94 Sport seats with black custom Sheepskins , Cragar rear louvers, GS Front calipers, Banski Trailing arms, APSIS Carbon Fiber steering wheel, Front and Rear Baer Eradispeeds, DRLs, Guldstrand front suspension,urethane bushings from Prothane (total suspension), Dewitt's Raditor with Dual SPAL fans and a Haibeck 170 T-Stat 11 RED/GREY CTS-V |
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#5 |
![]() Join Date: Jan 2007
Location: Florida
Posts: 240
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My '92 dyno'd at 398 rwhp and 358 torque, with top end porting, corsa, no cats & headers.
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#6 |
Join Date: Nov 2010
Location: Cedar Hill, Texas
Posts: 154
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Those are excellent numbers for the mods you have. Mine dynoed at 342 RWHP when it was stock. With Jeal headerss, X-pipe, no cats, I got to 375 at the wheels. I'm sure a good port job would get you close. Good luck!
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#7 |
Join Date: Feb 2008
Location: Vancouver, BC
Posts: 251
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Thanks guys.
I guess I was a bit optimistic. Without headers (prefer to avoid the the additional noise) I'll probably end up closer to 385. Will have to track down a good port & polish guru this winter..... |
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#8 |
Join Date: May 2007
Location: Chicagoland, IL
Posts: 9,686
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Surprisingly, the headers don't add noise. I was pleasantly pleased when I installed my Watsons. Interesting how close these numbers are across different top end ports ( did my own)and headers.
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