Grand Sport Mods
Thread Starter
1st Gear
Joined: Mar 2025
Posts: 1
Likes: 0
Grand Sport Mods
Hey all, new to the forums and modded Corvettes. In the market for a C6 Grand Sport and I’m open to pre-existing mods as I would plan on doing simple things anyways. I found one with some mods beyond my knowledge and curious what others have seen before. This setup seems aggressive from online searches and I’m curious if this would be “daily” able if I drive minimal miles a week.BTR Stage 2 N/A Cam 225/238 .620/.605 113 +3
BTR .660 Dual Springs and Ti Retainers
Hardened Pushrods
Halltech 108 Cold Air Intake w/Vette Ram Air Scoop
Gpi Rod Mod Intake Manifold
LS3 Heads Milled .30 w/Valve Job and .040 Head Gasket (Compression 11.7)
Johnson 2110 Short Travel Lifters
C5R Timing Chain
Yank PAS 3400 Converter
Derale Trans Cooler w/Fan
Mechman Alternator
American Racing 1 7/8 Headers and GESI 300 Cell Cats
DSX Flex Fuel Sensor (Runs on Both 93 and E85)
AEM Air/Fuel Ratio Gauge in Glovebox
BTR .660 Dual Springs and Ti Retainers
Hardened Pushrods
Halltech 108 Cold Air Intake w/Vette Ram Air Scoop
Gpi Rod Mod Intake Manifold
LS3 Heads Milled .30 w/Valve Job and .040 Head Gasket (Compression 11.7)
Johnson 2110 Short Travel Lifters
C5R Timing Chain
Yank PAS 3400 Converter
Derale Trans Cooler w/Fan
Mechman Alternator
American Racing 1 7/8 Headers and GESI 300 Cell Cats
DSX Flex Fuel Sensor (Runs on Both 93 and E85)
AEM Air/Fuel Ratio Gauge in Glovebox
Melting Slicks
Joined: Jul 2019
Posts: 2,294
Likes: 2,015
From: MA/NH Seacoast
There's nothing in that list of mods that would make the car temperamental to daily. The biggest thing on any modern, modified vehicle is how well the tune is done. If you got a guy who knows what he's doing, even radical setups can be put into daily driver use without any issues.
I personally have a very similar list of mods in my daily GMC. I drive it almost every day from April to December, and aside from the choppy idle, you'd never know how modified it is until you put your foot in it.
I personally have a very similar list of mods in my daily GMC. I drive it almost every day from April to December, and aside from the choppy idle, you'd never know how modified it is until you put your foot in it.
Race Director
Joined: Dec 2005
Posts: 11,885
Likes: 107
From: God's Country, ID
Curious, why the hassle to run e85 on a bolt on car?
Meth would be far simpler and doesn't require fuel injector upgrades that e85 would (which I don't see on your list).
But even meth is adding more components to manage for little benefit on a non fi car.
Meth would be far simpler and doesn't require fuel injector upgrades that e85 would (which I don't see on your list).
But even meth is adding more components to manage for little benefit on a non fi car.
Melting Slicks
Joined: Jul 2019
Posts: 2,294
Likes: 2,015
From: MA/NH Seacoast
Melting Slicks
Joined: Oct 2022
Posts: 3,339
Likes: 1,934
From: Ulta Vista, AZ
I always say, it is determined by what you can deal with.
Some people can deal with flat out race cars daily, while other people cannot have anything less convenient than a whisper quiet car with a 20 speaker stereo and seat massagers.
Some people can deal with flat out race cars daily, while other people cannot have anything less convenient than a whisper quiet car with a 20 speaker stereo and seat massagers.
Le Mans Master
Joined: Dec 2013
Posts: 6,337
Likes: 5,115
From: Charles Town WV
2024 Corvette of the Year Finalist - Modified
2023 C6 of the Year Winner - Modified
2022 C6 of the Year Finalist - Modified
I have the same BTR Stage 2 v1 that your listing here with relatively the same mods (less the convertor and intake. Drivability is of no concern; I did a 2000 mile round trip last fall (1500 of which was hard driving and beating the snot out of it in the smokie mountains). Zero issues. Car drives pretty much like stock. Its honestly a fairly mild cam. The only thing that confuses me is the DSX Flex Sensor, theirs zero gain with e85 on a setup like this. (You may squeeze an extra 5-10hp out of it but what you'd loose in MPG it's hardly worth it.) I'd say as long as the car runs good though and doesn't have any major issues this one wouldn't scare me a bit.
