427 C7 Grand Sport? - Chevrolet Corvette Forum Discussion

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Notices C7 Tech/Performance Corvette Technical Info, Internal Engine, External Engine, Tech Topics, Basic Tech, Maintenance, How to Remove & Replace Sponsored by: Community Links Pictures & Albums Members List Search Forums Show Threads Show Posts Tag Search Click for Advanced Search Find All Liked Posts Go to Page... 427 C7 Grand Sport? Reply Subscribe Thread Tools Search this Thread Dec 30, 2019 | 02:26 PM Share Share Options #1 2cnd Chance Thread Starter Melting Slicks Joined: Jul 2013 Posts: 2,718 Likes: 1,028 427 C7 Grand Sport? Does anyone here own one? ..driven one? If so what are your thoughts? Thanks! Reply 0 0 2cnd Chance View Public Profile Send a private message to 2cnd Chance Find More Posts by 2cnd Chance Dec 30, 2019 | 03:34 PM Share Share Options #2 Thomasmoto Team Owner Joined: Aug 2011 Posts: 21,575 Likes: 1,611 From: GREER SC I wasn't aware that there was such a car. The last 427 LS7's ended production line usage with the end of the C6 Z06's. Reply 0 0 Thomasmoto View Public Profile Send a private message to Thomasmoto Find More Posts by Thomasmoto Dec 30, 2019 | 04:16 PM Share Share Options #3 Jeff V. Le Mans Master Joined: Feb 2006 Posts: 5,979 Likes: 4,136 From: Kansas City, MO Katech builds them. https://www.torquenews.com/106/katec...rt-packs-699hp Reply 0 0 Jeff V. View Public Profile Find More Posts by Jeff V. Dec 30, 2019 | 04:35 PM Share Share Options #4 Bigblue77 Racer Joined: Sep 2019 Posts: 261 Likes: 28 From: Boston, MA Why wouldn't you just go with the Z06? Reply 0 0 Bigblue77 View Public Profile Send a private message to Bigblue77 Find More Posts by Bigblue77 Dec 30, 2019 | 06:10 PM Share Share Options #5 Mr. Gizmo Le Mans Master Joined: Mar 2010 Posts: 5,907 Likes: 650 From: St. Louis Quote: Originally Posted by Bigblue77 Why wouldn't you just go with the Z06? because a high horsepower high revving big cubic inch small block is more fun to drive and faster then a supercharged low revving motor suited to towing a fifth wheel versus being installed in a sports car. Reply 3 3 oregonsharkman Cooldaddy8 2cnd Chance Mr. Gizmo View Public Profile Send a private message to Mr. Gizmo Find More Posts by Mr. Gizmo Dec 30, 2019 | 06:15 PM Share Share Options #6 Bigblue77 Racer Joined: Sep 2019 Posts: 261 Likes: 28 From: Boston, MA Quote: Originally Posted by Mr. Gizmo;[url=tel:1600721030 1600721030[/url]]because a high horsepower high revving big cubic inch small block is more fun to drive and faster then a supercharged low revving motor suited to towing a fifth wheel versus being installed in a sports car. lol fair enough Reply 1 1 Mr. Gizmo Bigblue77 View Public Profile Send a private message to Bigblue77 Find More Posts by Bigblue77 Dec 30, 2019 | 07:35 PM Share Share Options #7 Always Red Dave Race Director Joined: Oct 2005 Posts: 10,007 Likes: 3,401 From: Plymouth Massachusetts 2025 C7 of the Year Finalist- Unmodified 2024 C7 of the Year Finalist - Unmodified 2020 C7 of the Year Finalist -- Unmodified Quote: Originally Posted by Mr. Gizmo because a high horsepower high revving big cubic inch small block is more fun to drive and faster then a supercharged low revving motor suited to towing a fifth wheel versus being installed in a sports car. C7 Z06 is faster than C6 Z06! Reply 1 1 usrodeo4 Always Red Dave View Public Profile Send a private message to Always Red Dave Find More Posts by Always Red Dave Dec 30, 2019 | 07:48 PM Share Share Options #8 2cnd Chance Thread Starter Melting Slicks Joined: Jul 2013 Posts: 2,718 Likes: 1,028 Quote: Originally Posted by Always Red Dave C7 Z06 is faster than C6 Z06! Thanks for the alert! But we’re talking about a C7 GS/Z07 with a 427 SBC with 700 HP. Reply 2 2 Mr. Gizmo jcsperson 2cnd Chance View Public Profile Send a private message to 2cnd Chance Find More Posts by 2cnd Chance Dec 30, 2019 | 07:56 PM Share Share Options #9 jcsperson Team Owner Joined: Dec 2010 Posts: 22,542 Likes: 798 From: Hillsborough NC NC Events Coordinator Quote: Originally Posted by Always Red Dave C7 Z06 is faster than C6 Z06! Probably not, but a built 700 hp NA 427 C7 GS is likely to be faster than a 650 hp FI C7Z. Just a guess. Reply 3 3 badhabit_wb Mr. Gizmo 2cnd Chance jcsperson View Public Profile Send a private message to jcsperson Find More Posts by jcsperson Dec 30, 2019 | 08:17 PM Share Share Options #10 2cnd Chance Thread Starter Melting Slicks Joined: Jul 2013 Posts: 2,718 Likes: 1,028 Quote: Originally Posted by Thomasmoto I wasn't aware that there was such a car. The last 427 LS7's ended production line usage with the end of the C6 Z06's. Actually no, the end of the LS7 was in the C5 Z/28. Reply 0 0 2cnd Chance View Public Profile Send a private message to 2cnd Chance Find More Posts by 2cnd Chance Dec 30, 2019 | 08:24 PM Share Share Options #11 jcchevy Pro Joined: Dec 2006 Posts: 555 Likes: 261 From: Magnolia TX Quote: Originally Posted by 2cnd Chance Actually no, the end of the LS7 was in the C5 Z/28. My 09 Z06 had a 427 LS7! Reply 0 0 jcchevy View Public Profile Send a private message to jcchevy Find More Posts by jcchevy Dec 30, 2019 | 09:16 PM Share Share Options #12 Poor-sha Track Rat Joined: Oct 2006 Posts: 6,466 Likes: 3,463 Quote: Originally Posted by 2cnd Chance Does anyone here own one? ..driven one? If so what are your thoughts? Thanks! My GS is up at Katech now to get one. My build thread for the car is below but hopefully @Katech_Jason will be posting up info on the engine build. https://www.corvetteforum.com/forums...e-c7-gs-r.html Reply 0 0 Poor-sha View Public Profile Send a private message to Poor-sha Visit Poor-sha's homepage! Find More Posts by Poor-sha Dec 30, 2019 | 09:19 PM Share Share Options #13 2cnd Chance Thread Starter Melting Slicks Joined: Jul 2013 Posts: 2,718 Likes: 1,028 Quote: Originally Posted by jcchevy My 09 Z06 had a 427 LS7! ok???? Look a little closer at my post you replied to. Last edited by 2cnd Chance; Dec 30, 2019 at 09:21 PM. Reply 0 0 2cnd Chance View Public Profile Send a private message to 2cnd Chance Find More Posts by 2cnd Chance Dec 30, 2019 | 09:20 PM Share Share Options #14 2cnd Chance Thread Starter Melting Slicks Joined: Jul 2013 Posts: 2,718 Likes: 1,028 Quote: Originally Posted by Poor-sha My GS is up at Katech now to get one. My build thread for the car is below but hopefully @Katech_Jason will be posting up info on the engine build. https://www.corvetteforum.com/forums...e-c7-gs-r.html Awesome, thanks!!! Reply 0 0 2cnd Chance View Public Profile Send a private message to 2cnd Chance Find More Posts by 2cnd Chance Dec 31, 2019 | 12:04 AM Share Share Options #15 family-man Drifting Joined: Dec 2011 Posts: 1,418 Likes: 65 Last LS7 was in the 2015 camaro z/28 Reply 2 2 olblue75 usrodeo4 family-man View Public Profile Find More Posts by family-man Dec 31, 2019 | 10:12 AM Share Share Options #16 RussBt Le Mans Master Joined: Jun 2001 Posts: 7,328 Likes: 518 From: Admit Nothing, Deny Everything, Make Counter Accusations. Are you asking if a C7 with a $31,000 aftermarket engine would be quicker and better on track than a stock Z06? I doubt anyone here has experience with the Katech package, but I would assume the answer is yes. You will lose your GM powertrain warranty and the engine will most likely be louder and rougher with much more lope. The Katech engine will have less low-end torque, you might have an issue with smog checks, and it might add weight to the car. You will end up with a $90,000+ Grand Sport hot rod. IMO a package like this is a good idea if you are building a dedicated track car, like Poor-sha is doing. If you want more HP for a car that spends most of its time on the street a stock Z06, ZR1, or even a ZL1 1LE makes more sense. Another option is an LT1 heads/cam/intake/exhaust/tune package from one of the well-known tuner shops. You could also sell your GS, buy a used Z06, and go for the $12,000 Stage 3 Package (800HP, 800TQ). https://store.katechengines.com/stag...kage-p654.aspx Reply 1 1 harris48cars RussBt View Public Profile Send a private message to RussBt Find More Posts by RussBt Dec 31, 2019 | 12:15 PM Share Share Options #17 jcsperson Team Owner Joined: Dec 2010 Posts: 22,542 Likes: 798 From: Hillsborough NC NC Events Coordinator I like this package better: Katech Stage II 600 horsepower, 523 lb-ft of torque* Package includes: -Baseline chassis dyno -Halltech air intake system -Katech Torquer LT1 camshaft -VVT limiter -Katech CNC ported heads -Katech competition valve job and hand blending -Katech CNC ported throttle body -MSD intake manifold -Paint MSD intake satin black and remove lettering -Katech AFM delete valley cover -LS7 lifters, lifter trays -PSI valve springs -Katech titanium valve spring retainers -Katech valve spring locators -GM valve seals -Katech C5-R timing chain -GM head bolts -Katech 160F thermostat -Serialized plaque -Installation -Licensing and calibration with HP Tuners (2017+ automatics include TCM unlock/licensing fees) -Chassis dyno tuning -Chassis dyno sheet comparing baseline to finished product -3 year/36,000mi warranty (see About Us page for details) $11,300.68 for Grand Sport 600 hp instead of 465 would really transform that car. Reply 2 2 2019CMGZ51 badhabit_wb

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jcsperson View Public Profile Send a private message to jcsperson Find More Posts by jcsperson Dec 31, 2019 | 12:18 PM Share Share Options #18 SpeedyVette Melting Slicks Joined: Aug 2019 Posts: 2,247 Likes: 181 Quote: Originally Posted by Mr. Gizmo because a high horsepower high revving big cubic inch small block is more fun to drive and faster then a supercharged low revving motor suited to towing a fifth wheel versus being installed in a sports car. Horrible MPG too! Reason they all are going Turbo/Supercharged! You can have your big cubes when the LT4 has more potential and beaks a 1000 hp with mods! Still getting better MPG NA 427 is really thing of the past! Reply 0 0 SpeedyVette View Public Profile Find More Posts by SpeedyVette Dec 31, 2019 | 12:25 PM Share Share Options #19 SpeedyVette Melting Slicks Joined: Aug 2019 Posts: 2,247 Likes: 181 Quote: Originally Posted by jcsperson Probably not, but a built 700 hp NA 427 C7 GS is likely to be faster than a 650 hp FI C7Z. Just a guess. Add the 2650 to the Z06 contest is now over Reply 0 0 SpeedyVette View Public Profile Find More Posts by SpeedyVette Dec 31, 2019 | 01:06 PM Share Share Options #20 2cnd Chance Thread Starter Melting Slicks Joined: Jul 2013 Posts: 2,718 Likes: 1,028 Quote: Originally Posted by SpeedyVette Horrible MPG too! Reason they all are going Turbo/Supercharged! You can have your big cubes when the LT4 has more potential and beaks a 1000 hp with mods! Still getting better MPG NA 427 is really thing of the past! If you get on a supercharged or turbo’d car you’re gonna have terrible mileage. The reason they don’t make the big cube engines from the factory is not gas mileage it’s emissions. The reason to go NA big cubes is less weight and better cooling than FI. Reply 0 0 2cnd Chance View Public Profile Send a private message to 2cnd Chance Find More Posts by 2cnd Chance Thread Tools Show Printable Version Search this Thread Click for Advanced Search Thread Tools Show Printable Version Email this Page Click for Advanced Search User Control Panel Private Messages Subscriptions Who's Online Search Forums Forums Home New Member Intros In Memoriam In loving memory of lost CorvetteForum Brothers and Sisters C8 Corvette C8 Z06 Discussion C8 ZR1, ZR1X, and Zora Discussion C8 ERay/Hybrid/EV Discussion C8 General Discussion C8 Tech/Performance C8 Forced Induction/Nitrous C8 Corvettes for Sale C8 Parts for Sale/Wanted C8 Dealer Inventory C8 Vendor for Sale C7 Corvette, 2014 - 2019 C7 ZR1 Discussion C7 General Discussion C7 Tech/Performance C7 Z06 Discussion C7 Forced Induction/Nitrous C7 Dealer Inventory C7 Corvettes for Sale C7 Parts for Sale/Wanted C7 Vendor for Sale C6 Corvette, 2005 - 2013 C6 Corvette ZR1 & Z06 C6 Corvette General Discussion C6 Tech/Performance C6 Scan & Tune C6 Forced Induction/Nitrous C6 Dealer Inventory C6 Corvettes for Sale C6 Parts for Sale/Wanted C6 Vendor for Sale C5 Corvettes, 1997 - 2004 C5 General C5 Tech C5 Scan & Tune C5 Forced Induction/Nitrous Performance Results C5 Corvettes for Sale C5 Parts for Sale/Wanted C5 Vendor for Sale C4 Corvettes, 1984 - 1996 C4 Tech/Performance C4 General Discussion C4 ZR-1 Discussion C4s for Sale/Wanted C4 Parts for Sale/Wanted C4 Vendor for Sale C3 Corvettes, 1968 - 1982 C3 Tech/Performance C3 General C3s for Sale/Wanted C3 Parts for Sale/Wanted C3 Vendor for Sale C1 & C2 Corvettes, 1953 - 1967 C1 & C2 Corvettes C1 & C2 Corvettes for Sale/Wanted C1 & C2 Parts C1 & C2 Vendor for Sale General Corvette Topics Autocrossing & Roadracing Autocrossing & Roadracing Classifieds Drag Racing Wheels & Tires Car Care Discussion Audio/Electronics Engine Mods Factory Correct Resto Paint/Body Auto Extras & Memorabilia Upcoming Events and Regional Discussion National Events NMCA C4/C5/C6 Shootout Northeast Southeast Great Lakes Northern California Southern California Pacific Northwest Southwest Mountain - Prairie Canadian Events Other Country Events Off Topic Photography F-Body General Discussion Other Cars Professional News, Articles, and Tips Ask Tadge Ken's Newsletters CorvetteForum Newsletter Archive Help & Feedback Help Forum Forum Guidelines and Rules Transactions Feedback Testing Reply Closed Thread Share

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