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Old Aug 2, 2025 | 06:59 PM
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Default Newbie needs help upgrading C5

Just bought 2002 w/ 350 and not overly impressed with torque. Then again, my '74 454 4-speed bored out with Edelbrock intake/ Holly 850 dual-feed is hard to top. Anyway, I was going to start with Vararam intake, headers(Kook seems to be everyone's favorite),Borla exhaust, and beefed up injectors. Any recommendations on cam ? Comp cams seems to be disfavored. Anything else ? Really don't want to get into replacing heads/yanking engine.
Thx,JD
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Old Aug 2, 2025 | 07:18 PM
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Just bolt on a Procharger and call it a day. Tomorrow you can start upgrading the drivetrain parts you break.
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Old Aug 2, 2025 | 07:59 PM
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Originally Posted by jayesquire
Just bought 2002 w/ 350 and not overly impressed with torque.
If it's stock, it's a 346...


Originally Posted by jayesquire
Anyway, I was going to start with Vararam intake
Poor quality. Difficult install. Not worth it for a street car IMO.

Originally Posted by jayesquire
....headers(Kooks seems to be everyone's favorite)
Good quality and fit. They will cost ya.

Originally Posted by jayesquire
Borla exhaust
Choose wisely if you like to hear your stereo or like to think.

Originally Posted by jayesquire
beefed up injectors.
I assume you mean larger injectors. Mods dictate the need.

Originally Posted by jayesquire
Any recommendations on cam ? Comp cams seems to be disfavored. Anything else ?
Not worth cracking open the motor if you are not doing heads.
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Old Aug 2, 2025 | 09:04 PM
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Yea this guy needs to do some reading on LS Engines, for about the next month or so..
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Old Aug 2, 2025 | 10:11 PM
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Already looked into A&A superchargers. Anticipated trannie would need some beefing.
Thx for helpful comment.
JD
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Old Aug 2, 2025 | 11:00 PM
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Might want to post if it’s stick or auto
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Old Aug 2, 2025 | 11:03 PM
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auto. either way I expected additional power would cause strain
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Old Aug 2, 2025 | 11:15 PM
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If it’s an auto with the stock 2.73 gearing, there’s your problem. Start with an RPM differential. I have a 3.73 gears and 3200 stall in my 2004 coupe. If you want it to run like a 454 4speed. RPM offers 3.90 or 4.10 gearing, add 3600 or 4000 stall and go have some fun. Any header and air intake should get you 40 rear wheel horsepower on an auto transmission car. LG and kooks being the best.
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Old Aug 2, 2025 | 11:18 PM
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Originally Posted by jayesquire
Damn !!!!!! I was hoping this forum would be full of helpful motorheads instead of snark A holes like the_merv.
If I wanted to spoon feed someone I would have had kids. If that little bit twisted your panties up you must have a rough time in life. I was subtle.

Help yourself before we can help you. You didn't even know the LS Engine in that car, if the factory 5.7l, is 346ci, not a "350". Know what these cars are atleast.
You just said 2002, there are several models in 2002, so again more info here is needed. Another guy above said the same.

So yea, put in some work on your end, we aren't here to hold your hand. Do your part too son.
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Old Aug 3, 2025 | 10:22 AM
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Originally Posted by jayesquire
Just bought 2002 w/ 350 and not overly impressed with torque. Then again, my '74 454 4-speed bored out with Edelbrock intake/ Holly 850 dual-feed is hard to top. Anyway, I was going to start with Vararam intake, headers(Kook seems to be everyone's favorite),Borla exhaust, and beefed up injectors. Any recommendations on cam ? Comp cams seems to be disfavored. Anything else ? Really don't want to get into replacing heads/yanking engine.
Thx,JD
Before anyone can recommend a cam, two very important questions need answering:
1: Is trans A4 or 6spd?
2: How do you use the car?
Let's go from here....
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Old Aug 3, 2025 | 10:27 AM
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Originally Posted by the_merv
If I wanted to spoon feed someone I would have had kids. If that little bit twisted your panties up you must have a rough time in life. I was subtle.

Help yourself before we can help you. You didn't even know the LS Engine in that car, if the factory 5.7l, is 346ci, not a "350". Know what these cars are atleast.
You just said 2002, there are several models in 2002, so again more info here is needed. Another guy above said the same.

So yea, put in some work on your end, we aren't here to hold your hand. Do your part too son.
C'mon, Merv! You cant say you have no kids, then call him "son."
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Old Aug 3, 2025 | 10:30 AM
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4-speed.
It is my "second car", after 2020 BMW 540i(pretty peppy 300hp, twin-turbo 3.0L)
I plan on driving normal EXCEPT when I want to remind myself(and maybe the 5.0L Mustang next to me) why I spent several thousand dollars on upgrades
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Old Aug 3, 2025 | 10:42 AM
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Originally Posted by jayesquire
4-speed.
It is my "second car", after 2020 BMW 540i(pretty peppy 300hp, twin-turbo 3.0L)
wait....what happened to this?

Originally Posted by jayesquire
....... my '74 454 4-speed bored out with Edelbrock intake/ Holly 850 dual-feed is hard to top.
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Old Aug 3, 2025 | 11:15 AM
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There's a Mustang 5.0l in the count now too.

Someone's kid get bored with video games and decided to start trolling the Corvette Forum..?
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Old Aug 3, 2025 | 04:01 PM
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Lucky, simple answer – it had too many birthdays. I bought it a little over 25 years ago. I put several thousand dollars in the engine: bored 60° over; milled the heads;TRW pistons; oversize valves; beefed up rocker arm assembly.; edelbrock intake; Holley dual feed; and last year went to electronic Ignition. A couple of weeks ago I took it to Kerry Jamison at Jamison custom Corvette here in Charleston. Nationally known Corvette out fitter. My 16-year-old daughter loves the car and wanted me to fix a laundry list of stuff that needed attention: headlights would not pop up; turn single handle broken; tachometer needed replacing; etc. Unfortunately, unbeknownst to me it had been developing some rust in the undercarriage and brake lines were rusted and needing replacing. He cautioned me against throwing good money after bad and suggested selling it as is.
So, my daughter wanted a C5 for a replacement. Based on my research 2002 seemed to be a good year.. She wanted something with a little bit of mileage because she actually wants some stuff to go wrong so she can fix it. Just bought a house with a huge garage getting ready to put in an Atlas car lift so she can tinker with it all she wants. Here is a picture of her changing the valve covers earlier this summer on the '74. And another picture of her in the C5 we bought four days ago .
I just turned 70. Grew up in the fabled muscle car era . So, for the last almost 40 years to me 5.7 meant 350 in.³.Heck, even Kerry Jamison referred to it as a 350. So, I am a little puzzled why a certain unnamed contributor thought it was such a big deal that I didn't know it was actually 346 in.³. It seems like every forum I am on has one.
Anyway, again, I am a newbie to the C5 series and greatly appreciate helpful comments.I can do without snarky.
JD



Last edited by jayesquire; Aug 3, 2025 at 04:06 PM. Reason: add info
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Old Aug 3, 2025 | 04:08 PM
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Originally Posted by jayesquire
Lucky, simple answer – it had too many birthdays. I bought it a little over 25 years ago. I put several thousand dollars in the engine: bored 60° over; milled the heads;TRW pistons; oversize valves; beefed up rocker arm assembly.; edelbrock intake; Holley dual feed; and last year went to electronic Ignition. A couple of weeks ago I took it to Kerry Jamison at Jamison custom Corvette here in Charleston. Nationally known Corvette out fitter. My 16-year-old daughter loves the car and wanted me to fix a laundry list of stuff that needed attention: headlights would not pop up; turn single handle broken; tachometer needed replacing; etc. Unfortunately, unbeknownst to me it had been developing some rust in the undercarriage and brake lines were rusted and needing replacing. He cautioned me against throwing good money after bad and suggested selling it as is.
So, my daughter wanted a C5 for a replacement. Based on my research 2002 seemed to be a good year.. She wanted something with a little bit of mileage because she actually wants some stuff to go wrong so she can fix it. Just bought a house with a huge garage getting ready to put in an Atlas car lift so she can tinker with it all she wants. Here is a picture of her changing the valve covers earlier this summer on the '74. And another picture of her in the C5 we bought four days ago .
I just turned 70. Grew up in the fabled muscle car era . So, for the last almost 40 years to me 5.7 meant 350 in.³.Heck, even Kerry Jamison referred to it as a 350. So, I am a little puzzled why a certain unnamed contributor thought it was such a big deal that I didn't know it was actually 346 in.³. It seems like every forum I am on has one.
Anyway, again, I am a newbie to the C5 series and greatly appreciate helpful comments.I can do without snarky.
JD


Wow TRW pistons from the grave. Always used though back in the day when they were top notch.

Jesus christ, i just finish reading your post. I guess you do not understand c5 problems. People get rid of these cars because of charonic problems. I hope you shot yourself in the shoe to se how long ur sanity will last if you just got a bad one.

P.S. You better have deep pockets problems could run u over 10k Overnight. One day it start next day ur ***'d. Im not kidding

Last edited by helga203; Aug 3, 2025 at 04:15 PM.
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Old Aug 3, 2025 | 04:58 PM
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Originally Posted by jayesquire
Lucky, simple answer – it had too many birthdays. I bought it a little over 25 years ago. I put several thousand dollars in the engine: bored 60° over; milled the heads;TRW pistons; oversize valves; beefed up rocker arm assembly.; edelbrock intake; Holley dual feed; and last year went to electronic Ignition. A couple of weeks ago I took it to Kerry Jamison at Jamison custom Corvette here in Charleston. Nationally known Corvette out fitter. My 16-year-old daughter loves the car and wanted me to fix a laundry list of stuff that needed attention: headlights would not pop up; turn single handle broken; tachometer needed replacing; etc. Unfortunately, unbeknownst to me it had been developing some rust in the undercarriage and brake lines were rusted and needing replacing. He cautioned me against throwing good money after bad and suggested selling it as is.
So, my daughter wanted a C5 for a replacement. Based on my research 2002 seemed to be a good year.. She wanted something with a little bit of mileage because she actually wants some stuff to go wrong so she can fix it. Just bought a house with a huge garage getting ready to put in an Atlas car lift so she can tinker with it all she wants. Here is a picture of her changing the valve covers earlier this summer on the '74. And another picture of her in the C5 we bought four days ago .
I just turned 70. Grew up in the fabled muscle car era . So, for the last almost 40 years to me 5.7 meant 350 in.³.Heck, even Kerry Jamison referred to it as a 350. So, I am a little puzzled why a certain unnamed contributor thought it was such a big deal that I didn't know it was actually 346 in.³. It seems like every forum I am on has one.
Anyway, again, I am a newbie to the C5 series and greatly appreciate helpful comments.I can do without snarky.
JD

Well, I guess you missed post #3. I clarified the displacement....just because the vette has not had a 350 CID since 1996. Not intended to offend, just to inform. Sorry that triggered you.

Good luck.
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Old Aug 3, 2025 | 06:00 PM
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A 16yr old with a Corvette, getting mods too. What could go wrong...

Originally Posted by helga203
Wow TRW pistons from the grave. Always used though back in the day when they were top notch.

Jesus christ, i just finish reading your post. I guess you do not understand c5 problems. People get rid of these cars because of charonic problems. I hope you shot yourself in the shoe to se how long ur sanity will last if you just got a bad one.

P.S. You better have deep pockets problems could run u over 10k Overnight. One day it start next day ur ***'d. Im not kidding
Yup that rabbit hole gets deep fast, then add in the "Corvette Tax"..

​​​​​​​I stand behind my above post. Reading, lots of it.
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Old Aug 3, 2025 | 08:26 PM
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Originally Posted by jayesquire
Lucky, simple answer – it had too many birthdays. I bought it a little over 25 years ago. I put several thousand dollars in the engine: bored 60° over; milled the heads;TRW pistons; oversize valves; beefed up rocker arm assembly.; edelbrock intake; Holley dual feed; and last year went to electronic Ignition. A couple of weeks ago I took it to Kerry Jamison at Jamison custom Corvette here in Charleston. Nationally known Corvette out fitter. My 16-year-old daughter loves the car and wanted me to fix a laundry list of stuff that needed attention: headlights would not pop up; turn single handle broken; tachometer needed replacing; etc. Unfortunately, unbeknownst to me it had been developing some rust in the undercarriage and brake lines were rusted and needing replacing. He cautioned me against throwing good money after bad and suggested selling it as is.
So, my daughter wanted a C5 for a replacement. Based on my research 2002 seemed to be a good year.. She wanted something with a little bit of mileage because she actually wants some stuff to go wrong so she can fix it. Just bought a house with a huge garage getting ready to put in an Atlas car lift so she can tinker with it all she wants. Here is a picture of her changing the valve covers earlier this summer on the '74. And another picture of her in the C5 we bought four days ago .
I just turned 70. Grew up in the fabled muscle car era . So, for the last almost 40 years to me 5.7 meant 350 in.³.Heck, even Kerry Jamison referred to it as a 350. So, I am a little puzzled why a certain unnamed contributor thought it was such a big deal that I didn't know it was actually 346 in.³. It seems like every forum I am on has one.
Anyway, again, I am a newbie to the C5 series and greatly appreciate helpful comments.I can do without snarky.
JD


Well you have a C3 that needs work , you're getting a car hoist - perfect scenario for your daughter who wants to fix things.
Redoing the brake lines would be a good father daughter project as you already are experienced on C3's - no learning curve or having to ask for help

Last edited by QIK59; Aug 3, 2025 at 09:43 PM.
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Old Aug 3, 2025 | 11:31 PM
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To beat a new 5.0 Stang with a 10 speed auto, you’re probably going to have to do a complete top end rebuild. You better be a good driver if you have a 6speed manual, 3.42 or 3.73 gears plus converter if you have a 4speed auto. Or, just scratch all this nonsense and go get a blower. And sticky rear tires.
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