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

More Mods, More Help, More Posts from Luerja

Thread Tools
 
Search this Thread
 
Old Jun 9, 2006 | 06:30 PM
  #1  
luerja's Avatar
luerja
Thread Starter
Melting Slicks
15 Year Member
 
Joined: Dec 2004
Posts: 2,101
Likes: 3
From: Cruising somewhere in St. Louis, Missouri
Default More Mods, More Help, More Posts from Luerja....Supercharger time

How can i find out what cam I have? I have been trying to figure out exactly what i have as far as the engine goes. I do know it is a GM crate moter built in mexico and have the part numbers and have identified the intake, heads and block but thats about it.

And if i don't have enough to do on the car, I now have the Install of a B&M 144 Supercharger so it is important to find out what Pistons and cam i have before i find out the hard way. I know if i pull one of the heads and drop the pan I can see what pistons I have but is there a way to tell the cam specs?

I did get a hold of GM and they could not find the build records for my engine.....Then i asked him if they had had the build records for my 72 convertible and he laughed.

Thanks in advance for all the help.... I'm sure this is not my last post on this install

If anyone can make it over here who knows how to set these things up I am willing to cook live Dungeness Crab, Steak, Maine Lobster, You name it you got it….I just need some expertise help before I pull a MsVetteMan on my engine…. ( just Kidding MsVetteMan)

I think I just really need help to do this right… Oh ya there is beer here too…


Jim


Last edited by luerja; Jun 9, 2006 at 07:13 PM.
Reply
Old Jun 9, 2006 | 08:24 PM
  #2  
luerja's Avatar
luerja
Thread Starter
Melting Slicks
15 Year Member
 
Joined: Dec 2004
Posts: 2,101
Likes: 3
From: Cruising somewhere in St. Louis, Missouri
Default

Posting a thread is like fishing.... you throw your lure there and watch watch it go down to the bottom and have to real it up again.... (no pun on my name there)

But this is a two part question here folks....I am am not going to make you eat my fresh Dungeness Crab and drink some beer but.... first question is how can i find out my cam specs and pistons.... I have done some reading and there is a number stamped on the piston........Bottom if it is after market and top if its factory....Right?

My perfectly running car will be down as soon as i take off the heads to i get this blower on but if the specs of the engine don't match up then i have to pull the motor and redo the engine.....but engine specs are not my specialty and need some help here..

Thanks for all your help in advance,
Jim

Last edited by luerja; Jun 9, 2006 at 08:26 PM.
Reply
Old Jun 10, 2006 | 12:40 AM
  #3  
682XLR8's Avatar
682XLR8
Safety Car
Veteran: Army
20 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Dec 2005
Posts: 4,270
Likes: 20
From: Central Michigan
Default

Jim-Is this the $1200 Goodwrench engine special you have? I have owned these motors before, and the cam was first thing I pulled. Also if your going to run a supercharger, you're not going to want the heads or pistons either, so there's no need to waste time checking specs on them. The block and crank should be OK depending on the mileage, but hopefully someone wiser on the subject of supercharging will speak up
I'm just over the bridge(San Mateo/Hayward), so if you need help I'll see what I can arrange
Reply
Old Jun 10, 2006 | 01:31 AM
  #4  
rexx78's Avatar
rexx78
Burning Brakes
20 Year Member
 
Joined: Dec 2002
Posts: 1,069
Likes: 2
From: Sherwood Park AB
Default

Originally Posted by luerja
I couldn't sit and look at it on my floor... Very cool.

I got lucky with my engine, when I pulled the cam it had a part number on it. I traced the part number to a Crane XE 268...

Good luck
Reply
Old Jun 10, 2006 | 01:41 AM
  #5  
luerja's Avatar
luerja
Thread Starter
Melting Slicks
15 Year Member
 
Joined: Dec 2004
Posts: 2,101
Likes: 3
From: Cruising somewhere in St. Louis, Missouri
Default

Originally Posted by 682XLR8
Jim-Is this the $1200 Goodwrench engine special you have? I have owned these motors before, and the cam was first thing I pulled. Also if your going to run a supercharger, you're not going to want the heads or pistons either, so there's no need to waste time checking specs on them. The block and crank should be OK depending on the mileage, but hopefully someone wiser on the subject of supercharging will speak up
I'm just over the bridge(San Mateo/Hayward), so if you need help I'll see what I can arrange

No this is sapose to be some (383 something), (fastburn heads), (dual plane intake) $4995.00 motor purchased back in 2004.

So who knows?... it has excellent low end torque and a very nice sounding engine.

but it is definitly all gm stuff




Last edited by luerja; Jun 10, 2006 at 01:49 AM.
Reply
Old Jun 10, 2006 | 01:43 AM
  #6  
luerja's Avatar
luerja
Thread Starter
Melting Slicks
15 Year Member
 
Joined: Dec 2004
Posts: 2,101
Likes: 3
From: Cruising somewhere in St. Louis, Missouri
Default

Originally Posted by rexx78
I couldn't sit and look at it on my floor... Very cool.

I got lucky with my engine, when I pulled the cam it had a part number on it. I traced the part number to a Crane XE 268...

Good luck
Is the part number usally on the end? under the timing chain cover?
Reply
Old Jun 10, 2006 | 06:08 AM
  #7  
Bob Onit's Avatar
Bob Onit
Melting Slicks
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Mar 2006
Posts: 3,342
Likes: 7
From: Connecticut
Default

Sorry I cant help you with the camshaft problem
BUT!
I had a B&M underhood on a 85 Z28
Holy crap, did I have some fun

Last edited by Bob Onit; Jun 10, 2006 at 06:13 AM.
Reply
Old Jun 10, 2006 | 09:56 AM
  #8  
xcelciador's Avatar
xcelciador
Instructor
 
Joined: Jun 2006
Posts: 123
Likes: 0
Default

Originally Posted by luerja
No this is sapose to be some (383 something), (fastburn heads), (dual plane intake) $4995.00 motor purchased back in 2004.

So who knows?... it has excellent low end torque and a very nice sounding engine.

but it is definitly all gm stuff

Is that carb supposed to be a doubl pumper. What did you do to it? You have two metering blocks on one side.
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 Jun 10, 2006 | 10:09 AM
  #9  
luerja's Avatar
luerja
Thread Starter
Melting Slicks
15 Year Member
 
Joined: Dec 2004
Posts: 2,101
Likes: 3
From: Cruising somewhere in St. Louis, Missouri
Default

Originally Posted by xcelciador
Is that carb supposed to be a doubl pumper. What did you do to it? You have two metering blocks on one side.
I purchased the car in this condition...so I'm not sure. It's a Holley model # 80508
Reply
Old Jun 10, 2006 | 10:59 AM
  #10  
ratflinger's Avatar
ratflinger
NCM Grand Opening Veteran
Supporting Lifetime Gold
Liked
Loved
Community Favorite
Top Answer: 1
 
Joined: Sep 2005
Posts: 20,979
Likes: 384
From: South of giving a damn
St. Jude Donor '11, '17
Default

Originally Posted by xcelciador
Is that carb supposed to be a doubl pumper. What did you do to it? You have two metering blocks on one side.

I'd venture that the item in question is a fuel bowl extension. The carb is clearly not a double pumper, thus the vacuum controller for the secondaries.
Reply
Old Jun 10, 2006 | 11:53 AM
  #11  
stingr69's Avatar
stingr69
Le Mans Master
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Mar 2004
Posts: 7,499
Likes: 1,507
From: Little Rock AR
Default

Originally Posted by xcelciador
Is that carb supposed to be a doubl pumper. What did you do to it? You have two metering blocks on one side.
...and NONE on the other!?!

That is a vacuum secondary carb originaly so it is a single pumper. Look for the numbers stamped into the choke horn and it can be identified as to what is was originaly. Not sure what it is now.

How does it run at WOT?

-Mark.
Reply
Old Jun 12, 2006 | 12:55 AM
  #12  
luerja's Avatar
luerja
Thread Starter
Melting Slicks
15 Year Member
 
Joined: Dec 2004
Posts: 2,101
Likes: 3
From: Cruising somewhere in St. Louis, Missouri
Default

Originally Posted by stingr69
...and NONE on the other!?!

That is a vacuum secondary carb originaly so it is a single pumper. Look for the numbers stamped into the choke horn and it can be identified as to what is was originaly. Not sure what it is now.

How does it run at WOT?

-Mark.
It runs like a scalded dog out of a hole....lol

But the carb didn't come with the engine...so no big deal there.... I have a Holley 700 Blower Carb with the B&M 144 so that will be replaced.
Reply
Old Jun 12, 2006 | 04:15 AM
  #13  
worship79's Avatar
worship79
Drifting
Supporting Member
Conversation Starter
Liked
Loved
Community Favorite
 
Joined: Jul 2005
Posts: 1,623
Likes: 29
From: The Netherlands
Default

Man, if you can't find the specs on your 2004 Goodwrench, I can forget finding out anything on my '96 Goodwrench

Nice engine though and even nicer plans!

Dou you know if your drivetrain and such are up for the blowers power?
Reply
Old Jun 12, 2006 | 11:27 AM
  #14  
luerja's Avatar
luerja
Thread Starter
Melting Slicks
15 Year Member
 
Joined: Dec 2004
Posts: 2,101
Likes: 3
From: Cruising somewhere in St. Louis, Missouri
Default

Originally Posted by worship79
Man, if you can't find the specs on your 2004 Goodwrench, I can forget finding out anything on my '96 Goodwrench

Nice engine though and even nicer plans!

Dou you know if your drivetrain and such are up for the blowers power?
I have new trailing arms and fresh rebuilt Rear hub assemblies from Van Steel. New u-joints on the half shafts and that’s all i know so far. The clutch is good but I think that may have to be replaced a better one down the road with this new found power but I don't plan on abusing this car all that much.

Last edited by luerja; Jun 12, 2006 at 11:42 AM.
Reply
Old Jun 12, 2006 | 01:12 PM
  #15  
ajrothm's Avatar
ajrothm
Le Mans Master
15 Year Member
Liked
Loved
Community Favorite
 
Joined: May 2006
Posts: 9,993
Likes: 1,136
From: League City Tx
Default

That blower intake will not work on the 383 in that picture. The engine pictured has Fast burn heads, notice there is only 8 bolts that holds the intake on. Different bolt pattern. You either have to go back to a conventional head or try to find a blower intake with the vortec port and bolt pattern. Weiand makes one, not sure if it will work with your old blower though.
Reply
Old Jun 12, 2006 | 02:23 PM
  #16  
luerja's Avatar
luerja
Thread Starter
Melting Slicks
15 Year Member
 
Joined: Dec 2004
Posts: 2,101
Likes: 3
From: Cruising somewhere in St. Louis, Missouri
Default

Originally Posted by ajrothm
That blower intake will not work on the 383 in that picture. The engine pictured has Fast burn heads, notice there is only 8 bolts that holds the intake on. Different bolt pattern. You either have to go back to a conventional head or try to find a blower intake with the vortec port and bolt pattern. Weiand makes one, not sure if it will work with your old blower though.

Thanks, I already have the part on order. My B&M 144 is the same as the Weiand 142 so parts and gaskets will be interchangable.

I just need to make sure I don't have too much compression and the correct cam and pistons so it all plays nicely together.
Reply
Old Jun 16, 2006 | 10:57 AM
  #17  
bashcraft's Avatar
bashcraft
Le Mans Master
20 Year Member
Active Streak: 30 Days
Active Streak: 60 Days
 
Joined: Jan 2006
Posts: 6,506
Likes: 139
From: Butler Pa
Default

Originally Posted by luerja
I just need to make sure I don't have too much compression and the correct cam and pistons so it all plays nicely together.
My guess is that since it's a 383, the compression is up around 10-1, which in my opinion is too high for a blower.
Reply
Old Jun 16, 2006 | 02:14 PM
  #18  
enkeivette's Avatar
enkeivette
Melting Slicks
15 Year Member
 
Joined: Sep 2004
Posts: 2,412
Likes: 3
Default

Originally Posted by luerja
I just need to make sure I don't have too much compression and the correct cam and pistons so it all plays nicely together.
Just listen for a ping, then you'll know.

My aftermarket pistons have part numbers stamped on the bottom, with the oil pan off they're easy to see. Don't know where the numbers are on GM pistons.

As for the cam I don't know what to tell you... You might be able to measure actual lift with a micrometer but there is still no way to measure lobe separation or duration.

And you can always look for a part number and google it. But then again, why waste the time? Cams are only a few hundred bucks and you know that with a more suitable cam you'll make much more power. The odds of this cam working perfectly in a blower app. are slim to none.

Also, if the compression is too high, this stuff might help. My friend uses it on his blown 625hp 95 Cobra.
Reply

Get notified of new replies

To More Mods, More Help, More Posts from Luerja





All times are GMT -4. The time now is 10:32 PM.

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