C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
Sponsored by:
Sponsored by:

Engine Upgrade

Thread Tools
 
Search this Thread
 
Old Dec 18, 2017 | 04:03 AM
  #1  
ariba's Avatar
ariba
Thread Starter
Instructor
 
Joined: Aug 2017
Posts: 216
Likes: 10
From: MD
Default Engine Upgrade

Hello
I have a new chevy 350/290
hooker black headers
600 holly
2101 edelbrock intake
flowmaster super 44
I add a L88 hood scoop
77
auto 350 turbo
stock rear but plan to change it to 3.73
I am planing to change it to 5 or 6 speed in the future.

My plan is to add more H.P abut 460+
After doing the engine there will be a plan to supercharge it or Turbo.

So I want it to handle a good amount of above 460+

I am thinking of Vortech 4GP218-050L

http://www.jegs.com/i/Vortech/933/4G...SABEgIievD_BwE

Planing to use the vette 3 days a week

Budget $2000 on engine parts I can go a little more if its necessary

I am open for all suggestions even if it takes me to change the hole engine
Thanks

Last edited by ariba; Dec 18, 2017 at 11:26 AM.
Reply
Old Dec 18, 2017 | 07:58 AM
  #2  
fishslayer143's Avatar
fishslayer143
Drifting
 
Joined: Aug 2009
Posts: 1,346
Likes: 160
From: new iberia la
Default

what year? what transmission is behind it and in what condition ? you may be about to exceed its capability ..remember big power has to be transferred to the wheels.
Reply
Old Dec 18, 2017 | 08:37 AM
  #3  
Gordonm's Avatar
Gordonm
Race Director
25 Year Member
Liked
Loved
Community Favorite
 
Joined: Dec 1999
Posts: 19,610
Likes: 778
From: Forked River NJ
Default

So you want 460+ HP from a 350/290 HP SB for 1600 dollars? Never going to happen. First off those heads will never flow enough for that kind of power. The bottom end of the motor will not take that much power for very long either. The 350/290 motor is pretty much a base motor. You mention a 2100 super charger and only want to put 1600 into the motor? Also with that kind of power the transmission and rear end and half shafts will all need to be upgraded. Just saying for anything approaching the 500 HP level you better have a much bigger budget.
Reply
Old Dec 18, 2017 | 11:22 AM
  #4  
ariba's Avatar
ariba
Thread Starter
Instructor
 
Joined: Aug 2017
Posts: 216
Likes: 10
From: MD
Default

Originally Posted by fishslayer143
what year? what transmission is behind it and in what condition ? you may be about to exceed its capability ..remember big power has to be transferred to the wheels.
Thank you
77
auto 350 turbo
I am planing to change it to 5 or 6 speed in the future.
I will add this info
thanks
Reply
Old Dec 18, 2017 | 11:32 AM
  #5  
ariba's Avatar
ariba
Thread Starter
Instructor
 
Joined: Aug 2017
Posts: 216
Likes: 10
From: MD
Default

Originally Posted by Gordonm
So you want 460+ HP from a 350/290 HP SB for 1600 dollars? Never going to happen. First off those heads will never flow enough for that kind of power. The bottom end of the motor will not take that much power for very long either. The 350/290 motor is pretty much a base motor. You mention a 2100 super charger and only want to put 1600 into the motor? Also with that kind of power the transmission and rear end and half shafts will all need to be upgraded. Just saying for anything approaching the 500 HP level you better have a much bigger budget.
Thank You I loved it when you said never going to happen . I did edit it to $2000. From your words I feel it's impossible?
So in a budget of $4200 or a little more will not bring me an engine that can have almost 500 H.P
Reply
Old Dec 18, 2017 | 04:16 PM
  #6  
C3 Stroker's Avatar
C3 Stroker
Safety Car
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Oct 2004
Posts: 3,921
Likes: 731
From: Youngstown Ohio
Default

Originally Posted by ariba
.......
So in a budget of $4200 or a little more will not bring me an engine that can have almost 500 H.P.......
Bust open that wallet.....think $6000 minimum (and only if can find some real deals on parts). This link is to a typical crate engine, less than 500 HP just to give you an idea what it costs........

https://paceperformance.com/i-227212...ge-finish.html
Reply
Old Dec 18, 2017 | 04:27 PM
  #7  
Strokemyaxe's Avatar
Strokemyaxe
Burning Brakes
10 Year Member
Photogenic
Liked
Loved
 
Joined: Jul 2014
Posts: 831
Likes: 54
From: Arlington TX
Default

I can't guarantee 460hp, but I can suggest a build for your budget that will get close.

Your big hiccup is your heads. They will not flow enough to satisfy the thirst of 460+boost. If you are going to turbo, you will need to find better low compression heads. Check C-List for a pair of procomp or similar china heads and pay $500. Go buy your self a new cam and lifter kit from Lunati, Comp, Herbert etc... $300. Buy your self a GOOD eagle balanced rotating assembly for about $1200. Should have some forged internals. Finally, buy the gasket set for the whole motor.

Pull your engine, strip it down, Take the block in to have honed and prepped ($160). Begin assembly.

RING GAP!!! Make sure you gap your rings to handle boosted applications. Last thing you should do is boost a motor with out of the box gapped rings. (Good bye cylinders!)

You will have a 400+ motor that will handle moderate amount of boost.

The key to any budget build is knowing where you are going, being patient, and pouncing on the opportunities of second hand when they come about.

Edit: If you don't know anything about heads or what to look for, you should start educating yourself on them. Always get a machine shop to look them over if possible. If the person claims they have low miles and are ready to bolt on, they won't have any issues with you meeting them at a machine shop for verification of what they say to be true.

Best of luck
-Stroke

Last edited by Strokemyaxe; Dec 18, 2017 at 04:32 PM.
Reply
Old Dec 18, 2017 | 04:34 PM
  #8  
fishslayer143's Avatar
fishslayer143
Drifting
 
Joined: Aug 2009
Posts: 1,346
Likes: 160
From: new iberia la
Default

you should consider just going to a good crate engine with your desired power range... with a warranty... matching components exactly is key to power and more importantly driveability .. with a crate , its already a tested combo
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-1

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo
story-2

Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

 Joe Kucinski
story-3

Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

 Verdad Gallardo
story-4

Top 10 Corvettes Coming to Mecum Indy 2026!

 Brett Foote
story-5

Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

 Michael S. Palmer
story-6

10 Revolutionary 'Corvette Firsts' Most People Don't Know

 Joe Kucinski
story-7

5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

 Michael S. Palmer
story-8

2027 Corvette vs The World: Every C8 vs Its Closest Competitor

 Joe Kucinski
story-9

10 Most Common Corvette Problems of the Last 20 Years!

 Joe Kucinski
Old Dec 18, 2017 | 04:38 PM
  #9  
Strokemyaxe's Avatar
Strokemyaxe
Burning Brakes
10 Year Member
Photogenic
Liked
Loved
 
Joined: Jul 2014
Posts: 831
Likes: 54
From: Arlington TX
Default

FWIW, I think centrifugal charger would be a better route to take over turbo. Plumbing for a turbo on a C3 is a bit of a challenge with space being so limited. Plus, being a casual driver on the street, charger would be more fun at that type of driving.

-Stroke
Reply
Old Dec 18, 2017 | 07:47 PM
  #10  
ariba's Avatar
ariba
Thread Starter
Instructor
 
Joined: Aug 2017
Posts: 216
Likes: 10
From: MD
Default

Originally Posted by C3 Stroker
Bust open that wallet.....think $6000 minimum (and only if can find some real deals on parts). This link is to a typical crate engine, less than 500 HP just to give you an idea what it costs........

https://paceperformance.com/i-227212...ge-finish.html
Thank you
But can you compare the blueprint one it's more H.P and a lower budget.

https://www.summitracing.com/parts/mll-bp3834ct1
Reply
Old Dec 18, 2017 | 07:55 PM
  #11  
ariba's Avatar
ariba
Thread Starter
Instructor
 
Joined: Aug 2017
Posts: 216
Likes: 10
From: MD
Default

Originally Posted by Strokemyaxe
I can't guarantee 460hp, but I can suggest a build for your budget that will get close.

Your big hiccup is your heads. They will not flow enough to satisfy the thirst of 460+boost. If you are going to turbo, you will need to find better low compression heads. Check C-List for a pair of procomp or similar china heads and pay $500. Go buy your self a new cam and lifter kit from Lunati, Comp, Herbert etc... $300. Buy your self a GOOD eagle balanced rotating assembly for about $1200. Should have some forged internals. Finally, buy the gasket set for the whole motor.

Pull your engine, strip it down, Take the block in to have honed and prepped ($160). Begin assembly.

RING GAP!!! Make sure you gap your rings to handle boosted applications. Last thing you should do is boost a motor with out of the box gapped rings. (Good bye cylinders!)

You will have a 400+ motor that will handle moderate amount of boost.

The key to any budget build is knowing where you are going, being patient, and pouncing on the opportunities of second hand when they come about.

Edit: If you don't know anything about heads or what to look for, you should start educating yourself on them. Always get a machine shop to look them over if possible. If the person claims they have low miles and are ready to bolt on, they won't have any issues with you meeting them at a machine shop for verification of what they say to be true.

Best of luck
-Stroke
Thank You for the advice
Reply
Old Dec 18, 2017 | 07:56 PM
  #12  
ariba's Avatar
ariba
Thread Starter
Instructor
 
Joined: Aug 2017
Posts: 216
Likes: 10
From: MD
Default

Originally Posted by Strokemyaxe
FWIW, I think centrifugal charger would be a better route to take over turbo. Plumbing for a turbo on a C3 is a bit of a challenge with space being so limited. Plus, being a casual driver on the street, charger would be more fun at that type of driving.

-Stroke
Thanks
what do you think of this one


http://www.jegs.com/i/Vortech/933/4G...SABEgIievD_BwE
Reply
Old Dec 18, 2017 | 09:54 PM
  #13  
C3 Stroker's Avatar
C3 Stroker
Safety Car
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Oct 2004
Posts: 3,921
Likes: 731
From: Youngstown Ohio
Default

Originally Posted by ariba
Thank you
But can you compare the blueprint one it's more H.P and a lower budget.

https://www.summitracing.com/parts/mll-bp3834ct1
Go for it.....good deal, but remember the Summit Blueprint one is a long block, not turnkey, and you'll have to add for intake, carb, ignition, and proper tuning to get the advertised HP.
Reply
Old Dec 19, 2017 | 01:02 AM
  #14  
ariba's Avatar
ariba
Thread Starter
Instructor
 
Joined: Aug 2017
Posts: 216
Likes: 10
From: MD
Default

Originally Posted by C3 Stroker
Go for it.....good deal, but remember the Summit Blueprint one is a long block, not turnkey, and you'll have to add for intake, carb, ignition, and proper tuning to get the advertised HP.
Thanks for the advice
they got one but I didn't like the intak
https://www.summitracing.com/parts/m...ctc1/overview/
Reply
Old Dec 19, 2017 | 04:53 AM
  #15  
terrys6t8roadster's Avatar
terrys6t8roadster
Melting Slicks
10 Year Member
 
Joined: May 2012
Posts: 2,192
Likes: 343
From: Allenton Wisconsin
Default

My Vortec build required a blow through carb. At the time from CSU it ran a G-note. A new fuel delivery system is required. High volume pump at low pressure, a pressure regulator that increases pressure as boost increases and an ignition system that retards timing as boost goes up. Your engine should have a cam designed for a boosted engine. And then when you get every thing sorted out with the engine running right, the hood wont close. A blower engine needs a good solid foundation, engine, machine work, and heads $4000 t0 $6000, upgrade to super charger $6000 to $8000. I have only found 5 C3s that have centrifical chargers on them. Sure you'll be able to snap the tires loose at 40 mph in 2nd, but those stock drive line parts will be laying on the ground so lets beef up the IRS to handle that, lets say $5 to $6 grand. My advice is to stick with a carbed engine around 450 to 500 hp max and have fun. T
Reply
Old Dec 19, 2017 | 11:51 AM
  #16  
Strokemyaxe's Avatar
Strokemyaxe
Burning Brakes
10 Year Member
Photogenic
Liked
Loved
 
Joined: Jul 2014
Posts: 831
Likes: 54
From: Arlington TX
Default

Originally Posted by ariba
Thanks
what do you think of this one


http://www.jegs.com/i/Vortech/933/4G...SABEgIievD_BwE
Can't go wrong with new Vortech. I think that is a safe setup too, but you would be able to run more boost with the budget build I mentioned. Maybe if you get down the road, you find a v-2 charger on C-List used, spend a little less than that and get 8-10psi.

Might want to start thinking about your drive train if you are going to be doing hard launches...

-Stroke
Reply
Old Dec 19, 2017 | 11:55 AM
  #17  
derekderek's Avatar
derekderek
Race Director
 
Joined: Jul 2015
Posts: 13,082
Likes: 3,399
From: SW Florida.
Default

There's a Virginia Chevy dealer sells brand new crate engines for 1700 bucks. Yes these are standard lopo crate engines. But you start with them change the cam get a set of heads. You're way ahead of $6,000.
Reply

Get notified of new replies

To Engine Upgrade

Old Dec 19, 2017 | 01:28 PM
  #18  
chrisviktorjakematt's Avatar
chrisviktorjakematt
Advanced
 
Joined: Mar 2014
Posts: 90
Likes: 9
Default

Originally Posted by derekderek
There's a Virginia Chevy dealer sells brand new crate engines for 1700 bucks. Yes these are standard lopo crate engines. But you start with them change the cam get a set of heads. You're way ahead of $6,000.
which dealer is that and where are they located?
Reply
Old Dec 19, 2017 | 03:50 PM
  #19  
stingraymaniac's Avatar
stingraymaniac
Le Mans Master
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Jun 2003
Posts: 5,135
Likes: 71
From: Umeå Sweden
Default

I have the 396 one from Blueprint, couldn't be happier, it's a beast
Reply
Old Dec 19, 2017 | 10:44 PM
  #20  
derekderek's Avatar
derekderek
Race Director
 
Joined: Jul 2015
Posts: 13,082
Likes: 3,399
From: SW Florida.
Default

Originally Posted by chrisviktorjakematt
which dealer is that and where are they located?
here is their ebay ad. https://www.ebay.com/itm/CHEVROLET-1...VaNDkB&vxp=mtr i think they have slightly hotter options still reasonable.

Last edited by derekderek; Dec 19, 2017 at 10:46 PM.
Reply



All times are GMT -4. The time now is 03:31 AM.

story-0
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-1
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE
story-2
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

Slideshow: Ranking the top 10 Corvette engines by torque output.

By Joe Kucinski | 2026-05-05 11:58:09


VIEW MORE
story-3
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

Slideshow: A Corvette pace car nearly matching IndyCar speeds sounds exaggerated, until you look at the numbers.

By Verdad Gallardo | 2026-05-04 20:03:36


VIEW MORE
story-4
Top 10 Corvettes Coming to Mecum Indy 2026!

Among a rather large group of them.

By Brett Foote | 2026-05-04 13:56:44


VIEW MORE
story-5
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

Slideshow: the top 10 things Corvette owners want in the C9 Corvette

By Michael S. Palmer | 2026-04-30 12:41:15


VIEW MORE
story-6
10 Revolutionary 'Corvette Firsts' Most People Don't Know

Slideshow: 10 Important Corvette 'firsts' that every fan should know.

By Joe Kucinski | 2026-04-29 17:02:16


VIEW MORE
story-7
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Slideshow: Should you buy a 2020-2026 Corvette or wait for 2027?

By Michael S. Palmer | 2026-04-22 10:08:58


VIEW MORE
story-8
2027 Corvette vs The World: Every C8 vs Its Closest Competitor

Slideshow: 2027 Corvette lineup vs the world.

By Joe Kucinski | 2026-04-24 16:12:42


VIEW MORE
story-9
10 Most Common Corvette Problems of the Last 20 Years!

Slideshow: 10 major Corvette problems from the last 20 years.

By Joe Kucinski | 2026-04-14 16:37:05


VIEW MORE