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

Corvette V12?

Thread Tools
 
Search this Thread
 
Old Sep 11, 2020 | 09:22 PM
  #421  
Punkchachi's Avatar
Punkchachi
Instructor
Liked
Loved
Community Favorite
 
Joined: Mar 2020
Posts: 167
Likes: 42
From: Virginia
Default

Originally Posted by Richard454
Jag V12 are nice- but about as heavy as a Cast Iron big block (685lbs)

However- the BMW V12 I'm gonna run with weighs in about 500lbs- fully dressed - A little more than a LS1.

As far as power goes- About 300HP in stock form. I've pulled all the accessories (A/C & P/S) and setting it up w/ a dry sump-a little clean up and I really will only see about 350HP. So- really close to what my original LS-5 made back in the day.

Hauq- Manual transmission is not a problem- The BMW 850's came w/ a 6 speed-and they are not too tough to find.

Richard
That's funny I saw this today, a few minutes before I read your post.
https://www.reddit.com/r/Corvette/co...2_in_my_73_c3/
He is putting a V12 from a mercedes into a 73 corvette.
Old Sep 11, 2020 | 10:54 PM
  #422  
Richard454's Avatar
Richard454
Thread Starter
Le Mans Master
20 Year Member
Active Streak: 30 Days
Top Answer: 1
Top Answer: 3
 
Joined: May 2003
Posts: 8,872
Likes: 3,548
From: Fernandina Beach FL
2023 Restomod of the Year finalist
2020 C3 of the Year Winner - Modified
Default

Originally Posted by Punkchachi
That's funny I saw this today, a few minutes before I read your post.
https://www.reddit.com/r/Corvette/co...2_in_my_73_c3/
He is putting a V12 from a mercedes into a 73 corvette.

Yep- I responded to his post here on the Corvette Forum-

I actually looked at that engine too-
Not that many made and didn't like the cylinder deactivation-under like 3K RPM it runs on 12 cylinders then it shuts off the valves on one side to a 6 cylinder.
I'm guessing it can be bypassed like the LS engines with Active Fuel Management.

Oh- from what I read they are notorious for out of round cylinder walls and oil fouling.

Plus converting to a manual will be a lot of work - as it never came with a manual transmission.

The only thing I wish I had done - was pull the body off frame- it would have really sped up the build. But I've owned the car for getting close to 40 years - no rust Georgia car - so I didn't feel the need.

thanks for looking!!!

Originally Posted by Corvettedave02
Looking forward to you getting your very complex build done way before my simple, mostly stock build Richard! Lol
THANK You!!

Ummm- so hows your "stock" non-complex build coming along!!!







Old Sep 12, 2020 | 04:04 PM
  #423  
7t2vette's Avatar
7t2vette
The ORIGINAL and bestest
Supporting Lifetime
20 Year Member
 
Joined: Oct 2000
Posts: 10,009
Likes: 240
From: Toronto Ontario
Toronto Events Coordinator
Default

Originally Posted by Richard454
A bunch of small stuff- but it's getting close!!!

Thanks for reading...I'll post some updates hopefully in a week or so.
Old Sep 12, 2020 | 07:04 PM
  #424  
TheSaint's Avatar
TheSaint
Le Mans Master
Supporting Gold
15 Year Member
Photogenic
Photoriffic
Shutterbug
 
Joined: Nov 2009
Posts: 5,442
Likes: 64
From: 50 kilometers outside Oslo Norway
Default

Old Mercedes V12 engine with stainless steel headers.. Oh what a great sound Sound just like a Pagani




Old May 1, 2021 | 05:00 PM
  #425  
Richard454's Avatar
Richard454
Thread Starter
Le Mans Master
20 Year Member
Active Streak: 30 Days
Top Answer: 1
Top Answer: 3
 
Joined: May 2003
Posts: 8,872
Likes: 3,548
From: Fernandina Beach FL
2023 Restomod of the Year finalist
2020 C3 of the Year Winner - Modified
Default

A big day in the neighborhood-

Drove my car all the way to the top of my driveway!!!!

Notes to self-
1) bolt down the seat!!!
2) fix bolt on sidepipe- nyloc?
3) work on clutch linkage- engages to soon
4) adjust latch on drivers door

So tomorrow - I hope to be driving around the neighborhood!!!

I'm really happy with the electric power steering- shifter is right where it feels good. It's finally coming together.

Still have a drip of oil on the back of the pan- changing the breather system to the catch can solved filling it up after a couple of revs. The oil filter canister's new AN to NPT fitting solved the leak there.

I have already ordered another oil pan gasket ( only $15) just in case.

Proof- it drove up the driveway!!!

AlsoPics of just some of my progress since last post-




AN fittings on oil canister- also redid the hoses so they can flex more when the engine is running-




New upgraded - custom built alternator- twin rectifiers- Internal and external fan cooled!!!





Yep- a really tight fit!!!!


Valve covers- cleaned them up- and had them powdercoated-




Basically finished up all the wiring- neatened it up the best I could.




Old May 1, 2021 | 05:23 PM
  #426  
AirborneSilva's Avatar
AirborneSilva
Melting Slicks
10 Year Member
 
Joined: Aug 2012
Posts: 3,487
Likes: 83
From: Titusville Florida
Default

Great progress Richard! Good to see it out in the sunlight.
Old May 1, 2021 | 06:35 PM
  #427  
C3Ferrari's Avatar
C3Ferrari
Intermediate
 
Joined: Apr 2020
Posts: 33
Likes: 7
From: Gainesville, GA
Default

I don't know HOW you could fit that alternator where you did! The biggest thing I could get to fit in that location was a Kabota fork lift alternator. Nice job with the whole project!
Old May 1, 2021 | 08:03 PM
  #428  
DblTrbl's Avatar
DblTrbl
Burning Brakes
10 Year Member
Liked
Loved
Community Favorite
 
Joined: Nov 2013
Posts: 886
Likes: 471
From: Central NJ
Default

Originally Posted by Richard454
A big day in the neighborhood-

Drove my car all the way to the top of my driveway!!!!



Looking forward to a lexan hood window.
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 May 1, 2021 | 08:12 PM
  #429  
Richard454's Avatar
Richard454
Thread Starter
Le Mans Master
20 Year Member
Active Streak: 30 Days
Top Answer: 1
Top Answer: 3
 
Joined: May 2003
Posts: 8,872
Likes: 3,548
From: Fernandina Beach FL
2023 Restomod of the Year finalist
2020 C3 of the Year Winner - Modified
Default

Originally Posted by AirborneSilva
Great progress Richard! Good to see it out in the sunlight.
Thank you Tony!!! Hope your son is still enjoying your old vette



Originally Posted by C3Ferrari
I don't know HOW you could fit that alternator where you did! The biggest thing I could get to fit in that location was a Kabota fork lift alternator. Nice job with the whole project!
Hey CY-

I milled it down a bit!!! It's good for 155A full tilt- and about 80A at idle.
Originally I had a GEO Storm w/ AC alt there that was only good for about 90A.

Originally Posted by DblTrbl
Looking forward to a lexan hood window.
HA- I'm going dumpster diving - when all the restaurants and retail stores get rid of the "covid" shields- I'll be good to go!!!
Old May 2, 2021 | 11:20 AM
  #430  
OldCarBum's Avatar
OldCarBum
Race Director
10 Year Member
Liked
Loved
Community Favorite
 
Joined: Mar 2016
Posts: 14,297
Likes: 8,103
From: Napa Valley California
Default

Hey Richard,
Nice to see it moving.
Good luck today cruising the neighborhood.
Old May 2, 2021 | 11:50 AM
  #431  
74_stingray's Avatar
74_stingray
Burning Brakes
Photogenic
Liked
Loved
Community Favorite
 
Joined: Jul 2018
Posts: 875
Likes: 289
From: LaFayette Georgia
C3 of Year Finalist (performance mods) 2019
St. Jude Donor '19
Default

Congratulations Richard, looking forward to more.
Spent Saturday at the Classic Glass Corvette Club Corvette show at Day’s Chevrolet, we took both of our 74’s. Enjoyed seeing several CorvetteForum friends.


Last edited by 74_stingray; May 2, 2021 at 11:52 AM.
Old May 2, 2021 | 03:35 PM
  #432  
Richard454's Avatar
Richard454
Thread Starter
Le Mans Master
20 Year Member
Active Streak: 30 Days
Top Answer: 1
Top Answer: 3
 
Joined: May 2003
Posts: 8,872
Likes: 3,548
From: Fernandina Beach FL
2023 Restomod of the Year finalist
2020 C3 of the Year Winner - Modified
Default

Originally Posted by OldCarBum
Hey Richard,
Nice to see it moving.
Good luck today cruising the neighborhood.
Thanks- I have proof!!!

Originally Posted by 74_stingray
Congratulations Richard, looking forward to more.
Spent Saturday at the Classic Glass Corvette Club Corvette show at Day’s Chevrolet, we took both of our 74’s. Enjoyed seeing several Corvette Forum friends.
OK- and why are you not posting up more pics?

The wife and I made it to the Caffeine & Octane show this morning- highlighted cars- Miata and Mustangs- so she was happy!!! Greay turnout!!!


And without further ado-


Old May 2, 2021 | 03:52 PM
  #433  
SHARKBIT77's Avatar
SHARKBIT77
Instructor
 
Joined: Mar 2013
Posts: 203
Likes: 24
From: Cincinnati OH
Default

Nice. I bet it felt great to get it back on the road. 👍
Old May 3, 2021 | 10:17 AM
  #434  
OldCarBum's Avatar
OldCarBum
Race Director
10 Year Member
Liked
Loved
Community Favorite
 
Joined: Mar 2016
Posts: 14,297
Likes: 8,103
From: Napa Valley California
Default

Congratulations Richard.
Looks like a huge success!
Are you still smiling?
I would be.

Last edited by OldCarBum; May 3, 2021 at 10:17 AM.
Old May 3, 2021 | 10:51 AM
  #435  
DblTrbl's Avatar
DblTrbl
Burning Brakes
10 Year Member
Liked
Loved
Community Favorite
 
Joined: Nov 2013
Posts: 886
Likes: 471
From: Central NJ
Default

Love it. Turn the mic up next time.
Old May 3, 2021 | 10:55 PM
  #436  
Richard454's Avatar
Richard454
Thread Starter
Le Mans Master
20 Year Member
Active Streak: 30 Days
Top Answer: 1
Top Answer: 3
 
Joined: May 2003
Posts: 8,872
Likes: 3,548
From: Fernandina Beach FL
2023 Restomod of the Year finalist
2020 C3 of the Year Winner - Modified
Default

Originally Posted by SHARKBIT77
Nice. I bet it felt great to get it back on the road. 👍
Yes- why Yes it did!!!

Originally Posted by OldCarBum
Congratulations Richard.
Looks like a huge success!
Are you still smiling?
I would be.
Still smiling- Thanks Greg!!!

Originally Posted by DblTrbl
Love it. Turn the mic up next time.
Carl- just for you -I'm gonna break out a pair of Sennheiser mics !!!
Old Aug 15, 2021 | 03:11 PM
  #437  
Pegan2261's Avatar
Pegan2261
Instructor
 
Joined: Jun 2021
Posts: 219
Likes: 62
From: Michigan
Default

Originally Posted by richard454
time for some updates-

i have a set goal to get this thing on the road- first of june!!!

The hotrod power tour is in my backyard this year- so figure i can either limp home or towing won't be that bad!!!

Here's the stops-

saturday, june 9 – bowling green, ky
beech bend raceway park

sunday, june 10 –chattanooga, tn
chattanooga state community college

monday, june 11 – hoover, al
hoover metropolitan stadium

tuesday, june 12 – hampton, ga
atlanta motor speedway

wednesday, june 13 – darlington, sc
darlington raceway

thursday, june 14 – raleigh, nc
pnc arena

friday, june 15 – concord, nc
zmax dragway


here's what i have been up to-

the cooling system-

had a leak behind the waterpump ( used air to check for leaks)- it was a npt fitting that i had blocked off- impossible to get at...so started taking of the front oil pump drive - serp drive and then decided to go to harbor freight and get some sacrificial tools. I grinded a couple sockets and hex key up and was able to get to it.

Leak stopped...however found my bran new radiator cap on my expansion tank was leaking- a spray bottle with soapy water found it.

Got a really nice piece off ebay for under $20-







i got an an fitting welded to the new radiator-




and while i was at it- i redid the angle of the tensioner on the serp drive- got a new pulley (smaller) and made a new bracket out of aluminum-




ready to go back together-





the exhaust is pretty much figured out-

here's the removable piece- so i can take the muffler apart-







uses factor frame mount-



all put together- o2 sensor bung in



now to finish up the brakes-

got a eastwood double flare tool-





and after doing some research - found out that i needed a 7/8" bore versus the 1" bore already bolted on- haven't put fluid in it yet.


😎😎🔥

Get notified of new replies

To Corvette V12?

Old Jan 25, 2023 | 10:52 AM
  #438  
DblTrbl's Avatar
DblTrbl
Burning Brakes
10 Year Member
Liked
Loved
Community Favorite
 
Joined: Nov 2013
Posts: 886
Likes: 471
From: Central NJ
Default

Just bumping this cause I like this car.
Old Jan 25, 2023 | 11:00 AM
  #439  
platinummaker's Avatar
platinummaker
Racer
 
Joined: Jan 2017
Posts: 496
Likes: 153
From: San Francisco Bay Area
Default

And a great guy!
Old Jan 25, 2023 | 11:52 AM
  #440  
AirborneSilva's Avatar
AirborneSilva
Melting Slicks
10 Year Member
 
Joined: Aug 2012
Posts: 3,487
Likes: 83
From: Titusville Florida
Default

Was just wondering the other day how Richard is getting along with this build...



All times are GMT -4. The time now is 11:38 PM.

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