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

383 Stroker ideas

Thread Tools
 
Search this Thread
 
Old Mar 5, 2013 | 01:24 PM
  #21  
PaPaPork's Avatar
PaPaPork
Racer
10 Year Member
 
Joined: Jan 2010
Posts: 344
Likes: 4
From: Island Lake IL
Default

Originally Posted by shua1269
With a tunel ram air intake I would have to then modify the hood or no hood, correct?
I'm not into the missing hood look on a vette so I would vote for a angry scoop... this harwood looks almost too big: http://www.racingjunk.com/Drag-Racin...Goza-tray.html
Reply
Old Mar 5, 2013 | 01:39 PM
  #22  
63mako's Avatar
63mako
Race Director
20 Year Member
Liked
Loved
Community Favorite
 
Joined: May 2005
Posts: 10,674
Likes: 122
From: Millington Illinois
St. Jude Donor '08-'09
Default

Originally Posted by shua1269
Sweet thanks. I'll post more details tomorrow when I know more. I appreciate all the info so far. If you guys are running 383s let me know what you have set up, what your power is looking like and hp ratings and 1/4 mile times. Thanks!!
See my profile. 10.4 to 1 AFR 195 competition ported, fully forged, Custom Roller cam, Custom large base tripower 150 NOS plate system, 527 HP NA, D&D Chevy/Viper close ratio T56 6 speed, Tom's 411 12 bolt, No 1/4 mile times it is a street car.
Reply
Old Mar 5, 2013 | 01:45 PM
  #23  
shua1269's Avatar
shua1269
Thread Starter
Instructor
 
Joined: Feb 2013
Posts: 112
Likes: 0
From: Tucson Arizona
Default

Originally Posted by 63mako
No 1/4 mile times it is a street car.
That is one hell of a street car! Very nice work!
Reply
Old Mar 5, 2013 | 09:15 PM
  #24  
shua1269's Avatar
shua1269
Thread Starter
Instructor
 
Joined: Feb 2013
Posts: 112
Likes: 0
From: Tucson Arizona
Default

Alright so here is what I found out today, It's a 383 that will be using an eagle competition rotating assembly, a set of 882 heads, air gap intake and holley 750 carb.

Not sure how good or what this will put me at power wise... Again this is going to ba a relatively free motor for me, so I will be happy either way, but that way i can figure out where my horse power is going to be compared to where I want it to be.

Reply
Old Mar 5, 2013 | 09:31 PM
  #25  
shua1269's Avatar
shua1269
Thread Starter
Instructor
 
Joined: Feb 2013
Posts: 112
Likes: 0
From: Tucson Arizona
Default

Originally Posted by shua1269
Alright so here is what I found out today, It's a 383 that will be using an eagle competition rotating assembly, <b>a set of 882 heads<b>, air gap intake and holley 750 carb.
I was just checking on the 882 heads and not so good things I've found on them.... Guess I gotta try and concince the guy to swap those heads.....
Reply
Old Mar 5, 2013 | 10:02 PM
  #26  
68post's Avatar
68post
Burning Brakes
10 Year Member
Liked
Loved
Community Favorite
 
Joined: Nov 2012
Posts: 788
Likes: 100
From: Indianapolis IN
Default

Originally Posted by shua1269
I was just checking on the 882 heads and not so good things I've found on them.... Guess I gotta try and concince the guy to swap those heads.....
If all you'll end-up with is a set of oem stock heads - be aware that even the least expensive aftermarket aluminum heads will put you "light years" ahead toward your HP goal.
If you will receive a good set of stock heads that are resale-able - that would be in your best interest. IMHO
Reply
Old Mar 5, 2013 | 10:29 PM
  #27  
shua1269's Avatar
shua1269
Thread Starter
Instructor
 
Joined: Feb 2013
Posts: 112
Likes: 0
From: Tucson Arizona
Default

Originally Posted by 68post
aluminum heads will put you "light years" ahead toward your HP goal.
If you will receive a good set of stock heads that are resale-able - that would be in your best interest. IMHO
That's what I'm thinking because I have been reading nothing but bad things about 882 heads(even Ported) So I know once I get this motor I will be changing out the heads... I'm not sure what cam is in it yet. I get bits and peices of information from this guy.
Reply
Old Mar 5, 2013 | 11:00 PM
  #28  
bluedawg's Avatar
bluedawg
Safety Car
 
Joined: Jan 2009
Posts: 3,736
Likes: 56
From: anchorage ak
Default

If he used 882's what did he use on the rest of the engine?
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

10 Ugly Corvettes That We Still Kinda Love

 Joe Kucinski
story-1

Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

 Brett Foote
story-2

10 Things Every Corvette Owner Needs (2026 Edition)

 Michael S. Palmer
story-3

8 Most "Only Corvette Owners Understand" Quirks and Problems

 Pouria Savadkouei
story-4

10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

 Joe Kucinski
story-5

How Much Horsepower Every Corvette Engine "LOST" in 1972

 Joe Kucinski
story-6

Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

 Michael S. Palmer
story-7

Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

 Joe Kucinski
story-8

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

 Joe Kucinski
story-9

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

 Verdad Gallardo
Old Mar 5, 2013 | 11:50 PM
  #29  
shua1269's Avatar
shua1269
Thread Starter
Instructor
 
Joined: Feb 2013
Posts: 112
Likes: 0
From: Tucson Arizona
Default

Originally Posted by bluedawg
If he used 882's what did he use on the rest of the engine?
He used an Eagle competition rotating assembly,
http://www.jegs.com/i/Eagle/356/B120...oductId=752441

speed pro pistons
http://www.racersauction.com/printLo...ated%20Pistons

Not sure about cam yet,

Ported 882 heads

edelbrock air gap intake
http://www.summitracing.com/parts/ed...FeZFMgodOW8Adg

holley 750 carb.

That is what he sent me that I know for sure.
Reply
Old Mar 6, 2013 | 12:15 AM
  #30  
bluedawg's Avatar
bluedawg
Safety Car
 
Joined: Jan 2009
Posts: 3,736
Likes: 56
From: anchorage ak
Default

Im not the biggest fan of eagle, but theres alot worse out there. Far better than cast. A set or afr 195 heads 76 cc chambers and a good hydraulic roller crank and youd be doing good. Go 64 cc chambers and a mean solid roller and youd be at the 400 rwhp mark.

Last edited by bluedawg; Mar 6, 2013 at 12:19 AM.
Reply
Old Mar 6, 2013 | 12:27 AM
  #31  
shua1269's Avatar
shua1269
Thread Starter
Instructor
 
Joined: Feb 2013
Posts: 112
Likes: 0
From: Tucson Arizona
Default

Originally Posted by bluedawg
Im not the biggest fan of eagle, but theres alot worse out there. Far better than cast. A set or afr 195 heads 76 cc chambers and a good hydraulic roller crank and youd be doing good. Go 64 cc chambers and a mean solid roller and youd be at the 400 rwhp mark.
Awesome thanks!
Reply
Old Mar 6, 2013 | 03:59 AM
  #32  
gkull's Avatar
gkull
Team Owner
25 Year Member
Liked
Loved
Community Favorite
 
Joined: Apr 1999
Posts: 21,953
Likes: 1,445
From: Reno Nevada
2024 C3 of the Year Finalist- Modified
Default

The links you posted are conflicting. Rotating kit including 6 inch rods and flat top pistons.......... and then Speed pro domed pistons for 5.7 rods
Reply
Old Mar 6, 2013 | 10:12 AM
  #33  
Little Mouse's Avatar
Little Mouse
Le Mans Master
15 Year Member
 
Joined: Apr 2006
Posts: 5,403
Likes: 95
Default

Not seeing any mention of the block being used ?
Reply
Old Mar 6, 2013 | 10:22 AM
  #34  
shua1269's Avatar
shua1269
Thread Starter
Instructor
 
Joined: Feb 2013
Posts: 112
Likes: 0
From: Tucson Arizona
Default

Originally Posted by gkull
The links you posted are conflicting. Rotating kit including 6 inch rods and flat top pistons.......... and then Speed pro domed pistons for 5.7 rods
I copied the wrong link for the assy
http://www.jegs.com/i/Eagle/356/1200...oductId=752441

Thanks for pointing that out.
Reply
Old Mar 6, 2013 | 10:28 AM
  #35  
63mako's Avatar
63mako
Race Director
20 Year Member
Liked
Loved
Community Favorite
 
Joined: May 2005
Posts: 10,674
Likes: 122
From: Millington Illinois
St. Jude Donor '08-'09
Default

Originally Posted by shua1269
I copied the wrong link for the assy
http://www.jegs.com/i/Eagle/356/1200...oductId=752441

Thanks for pointing that out.
That rotating assembly has 31CC dish pistons and comes balanced. Likely supercharger pistons for lots of boost. With your 76CC heads you have under 7 to 1 compression.

Last edited by 63mako; Mar 6, 2013 at 10:30 AM.
Reply
Old Mar 6, 2013 | 10:49 AM
  #36  
aaroncorvette's Avatar
aaroncorvette
Burning Brakes
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Jan 2009
Posts: 845
Likes: 54
From: Bangor, Northern Ireland
Default

Personally I think it's borderline pointless talking HP figures, US dynos seem to spit out stupid numbers.

I'm sure you just want a quick vette? A genuine 400RWHP car is a very very fast car and not realistic for most of us unless you want to mod the entire drivetrain.

I suggest you'll get the fast car with a combination of trans and engine mods.

The trans will make the car quicker off the line and cruise nicer, 3 speed autos and 4 speed manuals are a thing of the past for a small block, they're gearing limited at both ends of the spectrum.

Forget HP goals and think 1/4 mile times, perhaps 13 dead is a good start? That's plenty fast.

Options -

I'd grab that 383 and see what you have, cast crank is ok to 6300, get some ARP rod bolts for the rods, hyper pistons are fine, take the bottom end to a shop with the cam and ALL of the stuff that attaches to the crank and get it lightened and balanced WELL. Cam equivalent to something like Edelbrock RPM but in roller version. get the Edelbrock RPM top end kit and fit this yourself once the short block is back, add a 750 vac sec carb, not double pumper and you'll have a great engine that is fast and won't kill your drivetrain or the bank.

For a trans ( I didn't see whether you're auto or manual) get a 700 or 200 or break a Camaro for the 5 speed ( depending on your axle ratio, try to keep 1st gear around 10, i.e 2.87 first gear x 3.55 rear = 10.1 in my car.

Hope this helps
Reply
Old Mar 6, 2013 | 11:36 AM
  #37  
Cstraub69's Avatar
Cstraub69
Racer
 
Joined: Jul 2004
Posts: 254
Likes: 1
Default

Flatter the powerband the quicker the car will accelerate.
Reply

Get notified of new replies

To 383 Stroker ideas

Old Mar 6, 2013 | 11:40 AM
  #38  
shua1269's Avatar
shua1269
Thread Starter
Instructor
 
Joined: Feb 2013
Posts: 112
Likes: 0
From: Tucson Arizona
Default

Originally Posted by Cstraub69
Flatter the powerband the quicker the car will accelerate.
What do you mean by a flatter power band?
Reply
Old Mar 6, 2013 | 11:52 AM
  #39  
Cstraub69's Avatar
Cstraub69
Racer
 
Joined: Jul 2004
Posts: 254
Likes: 1
Default

2 equal engines in all aspects, the one that rpm's the quickest will always be faster.

A broad flat powerband allows an engine to rpm very quickly. You want this as it will reach the shift point quicker and also recover quicker after the gear shift. A broad flat powerband will allow the engine to pull more more (lower numberically) which lets the car go faster.

Lets say a engine makes peak torque at 4200 rpm and it is 500#/ft. I cam the engine to achieve no less than 7% loss of peak torque 1000 rpm above and and 1000 rpm below peak. So for 2000 rpm the engine is no less than 465#/ft.

Next time you look at a dyno sheet and you get done with the peak numbers, look at the torque band and see how wide it is and run the numbers.
Reply
Old Mar 6, 2013 | 02:18 PM
  #40  
shua1269's Avatar
shua1269
Thread Starter
Instructor
 
Joined: Feb 2013
Posts: 112
Likes: 0
From: Tucson Arizona
Default

Originally Posted by Cstraub69
2 equal engines in all aspects, the one that rpm's the quickest will always be faster.

A broad flat powerband allows an engine to rpm very quickly. You want this as it will reach the shift point quicker and also recover quicker after the gear shift. A broad flat powerband will allow the engine to pull more more (lower numberically) which lets the car go faster.

Lets say a engine makes peak torque at 4200 rpm and it is 500#/ft. I cam the engine to achieve no less than 7% loss of peak torque 1000 rpm above and and 1000 rpm below peak. So for 2000 rpm the engine is no less than 465#/ft.

Next time you look at a dyno sheet and you get done with the peak numbers, look at the torque band and see how wide it is and run the numbers.
Oh ok, I understand now. Thanks. I hope this rig ends up lasting a little while til I can do it right and spend the $
Reply



All times are GMT -4. The time now is 01:55 AM.

story-0
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-1
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-2
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-3
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-4
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-5
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-6
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-7
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-8
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-9
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