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

Finally!! In the 8's!!

Thread Tools
 
Search this Thread
 
Old Nov 16, 2019 | 11:10 PM
  #41  
632C2's Avatar
632C2
Drifting
Supporting Lifetime Gold
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Jul 2002
Posts: 1,820
Likes: 283
From: Puyallup WA
Default

Jim, I really need to point something out. For the life of me I can't begin to understand how you are able to drive a car running in the 8's with a manual transmission and turbos! Most cars running those times with turbos are using automatics. To say you are supremely talented with a stick is an understatement. I know how fast things happen in my high 9 second car and I don't have to push in a clutch pedal! Then there is that little issue of you having to keep a car with that much power going straight. Oh, and the fact that you built this car by yourself is even more impressive. You are truly one in a million and have my undying respect! I look forward to seeing your future time slips going even lower!
Reply
Old Nov 17, 2019 | 06:26 AM
  #42  
theandies's Avatar
theandies
Team Owner
Veteran: Air Force
25 Year Member
Community Favorite
Top Answer: 1
 
Joined: Jun 2001
Posts: 23,380
Likes: 1,067
From: Virginia USA
Default

Jim,
I always knew you'd make it. Deep in at 8.89 too. Impressive.
Reply
Old Nov 17, 2019 | 06:30 AM
  #43  
theandies's Avatar
theandies
Team Owner
Veteran: Air Force
25 Year Member
Community Favorite
Top Answer: 1
 
Joined: Jun 2001
Posts: 23,380
Likes: 1,067
From: Virginia USA
Default

To me this is what "Street Outlaws" should be. Those guys who claim to have the fastest "street cars in America" are really just race cars they race on a public streets. Jim has a real "street car" that will go like hell on a race track and then turn around and get some ice cream with the Miss afterwards. That's a real street car.

Last edited by theandies; Nov 17, 2019 at 06:30 AM.
Reply
Old Nov 17, 2019 | 04:43 PM
  #44  
427Hotrod's Avatar
427Hotrod
Thread Starter
Race Director
25 Year Member
Liked
Loved
Top Answer: 5
 
Joined: Jan 2000
Posts: 13,019
Likes: 2,262
From: Corsicana, Tx
2020 C2 of the Year - Modified Winner
2020 Corvette of the Year (performance mods)
C2 of Year Winner (performance mods) 2019
2017 C2 of Year Finalist
Default

Originally Posted by 632C2
Jim, I really need to point something out. For the life of me I can't begin to understand how you are able to drive a car running in the 8's with a manual transmission and turbos! Most cars running those times with turbos are using automatics. To say you are supremely talented with a stick is an understatement. I know how fast things happen in my high 9 second car and I don't have to push in a clutch pedal! Then there is that little issue of you having to keep a car with that much power going straight. Oh, and the fact that you built this car by yourself is even more impressive. You are truly one in a million and have my undying respect! I look forward to seeing your future time slips going even lower!
Thanks Steve....I've been pounding on this thing so long it just seems normal! It's still "lazy" on the front half which will greatly improve if/when I decide to implement some boost controls and get it up on boost at the line...and then get it to accept that power. It doesn't really have any lag...just comes on REAL strong as it builds boost. It's always been a "back half" car even when N/A...but that also helps get it hooked up at the start.

So many compromises!

JIM
Reply
Old Nov 17, 2019 | 04:47 PM
  #45  
427Hotrod's Avatar
427Hotrod
Thread Starter
Race Director
25 Year Member
Liked
Loved
Top Answer: 5
 
Joined: Jan 2000
Posts: 13,019
Likes: 2,262
From: Corsicana, Tx
2020 C2 of the Year - Modified Winner
2020 Corvette of the Year (performance mods)
C2 of Year Winner (performance mods) 2019
2017 C2 of Year Finalist
Default

Originally Posted by theandies
To me this is what "Street Outlaws" should be. Those guys who claim to have the fastest "street cars in America" are really just race cars they race on a public streets. Jim has a real "street car" that will go like hell on a race track and then turn around and get some ice cream with the Miss afterwards. That's a real street car.
Yeah...those guys are in a whole 'nuther league for sure! My car is just like any other C2 out there...just has stupid drivetrain bolted under it! It's fun to drive and has been pretty darn reliable considering what I do to it. In 19 years it's had one engine issue and that was caused by a fuel pump that died and it leaned out and torched a piston before I could get my foot out of it. Drivetrain has been rock solid once I put the Dana 60 IRS under it and installed the GForce trans. The new clutch I just installed wasn't broken...just worn out after years of racing and street use. So far so good!!

I guess I need to stick some BIG turbos on it and make some real power!

JIM
Reply
Old Nov 17, 2019 | 07:06 PM
  #46  
Capt. Shark's Avatar
Capt. Shark
Team Owner
St. Jude 15 Year Donor
20 Year Member
Community Builder
Liked
 
Joined: Jan 2006
Posts: 39,391
Likes: 171
From: Into the Mystic And yet, despite the look on my face, you're still talking TN
St. Jude Donor '09 thru '25
Default

Originally Posted by theandies
Jim,
I always knew you'd make it. Deep in at 8.89 too. Impressive.
indeed
Reply
Old Jan 9, 2020 | 12:13 PM
  #47  
Larry Parks's Avatar
Larry Parks
Intermediate
 
Joined: Jan 2020
Posts: 29
Likes: 4
From: Ennis TEXAS
Default

Awesome Jim ! Look ….I finally got on here ! Since I have my 68 C3 now....
Reply
Old Jan 10, 2020 | 01:07 AM
  #48  
427Hotrod's Avatar
427Hotrod
Thread Starter
Race Director
25 Year Member
Liked
Loved
Top Answer: 5
 
Joined: Jan 2000
Posts: 13,019
Likes: 2,262
From: Corsicana, Tx
2020 C2 of the Year - Modified Winner
2020 Corvette of the Year (performance mods)
C2 of Year Winner (performance mods) 2019
2017 C2 of Year Finalist
Default

Originally Posted by Larry Parks
Awesome Jim ! Look ….I finally got on here ! Since I have my 68 C3 now....
Now you're hooked!! Let me know when you start playing with that thing.

JIM
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 Jan 10, 2020 | 08:14 AM
  #49  
Larry Parks's Avatar
Larry Parks
Intermediate
 
Joined: Jan 2020
Posts: 29
Likes: 4
From: Ennis TEXAS
Default

For sure ! I am currently researching the best ways or areas to beef up rear. Like the .134 wall 3.5 half shafts and solid U joints and the upgrade outer stubs that have the axle flanges for the wheels studs.. They have some on Dana- Rockauto 1541H alloy for $76 each . You did some kind of 1x2 rect tube limiters to the bottom out snubbers ?
Reply
Old Jan 11, 2020 | 08:02 PM
  #50  
Little Mouse's Avatar
Little Mouse
Le Mans Master
15 Year Member
 
Joined: Apr 2006
Posts: 5,403
Likes: 95
Default

How do you get away with running the car without a 10 point cage ?
Reply
Old Jan 12, 2020 | 01:40 AM
  #51  
427Hotrod's Avatar
427Hotrod
Thread Starter
Race Director
25 Year Member
Liked
Loved
Top Answer: 5
 
Joined: Jan 2000
Posts: 13,019
Likes: 2,262
From: Corsicana, Tx
2020 C2 of the Year - Modified Winner
2020 Corvette of the Year (performance mods)
C2 of Year Winner (performance mods) 2019
2017 C2 of Year Finalist
Default

Originally Posted by Little Mouse
How do you get away with running the car without a 10 point cage ?
I don't run at NHRA events. I go to track rentals and events that run on NHRA tracks without NHRA rules. Also...some tracks aren't as picky.

JIM

Last edited by 427Hotrod; Jan 12, 2020 at 01:41 AM.
Reply
Old Jan 12, 2020 | 01:45 AM
  #52  
427Hotrod's Avatar
427Hotrod
Thread Starter
Race Director
25 Year Member
Liked
Loved
Top Answer: 5
 
Joined: Jan 2000
Posts: 13,019
Likes: 2,262
From: Corsicana, Tx
2020 C2 of the Year - Modified Winner
2020 Corvette of the Year (performance mods)
C2 of Year Winner (performance mods) 2019
2017 C2 of Year Finalist
Default

Originally Posted by Larry Parks
For sure ! I am currently researching the best ways or areas to beef up rear. Like the .134 wall 3.5 half shafts and solid U joints and the upgrade outer stubs that have the axle flanges for the wheels studs.. They have some on Dana- Rockauto 1541H alloy for $76 each . You did some kind of 1x2 rect tube limiters to the bottom out snubbers ?
Tom's differentials sells the best axles. There's some cheap stuff out there. I had my halfshafts made at a driveshaft shop. 3.5's are probably overkill unless you go with the whole 1480 u-joint setup....but good 3" will take a lot.

I've played with various snubbers over the years. I have some extended ones now. Best thing is to get a real stiff rear spring and good adjustable shocks to handle the hit. My spring is a "Daytona" 5 leaf with an added main leaf. I've got QA-1 rear shocks.

You planning on an auto or a stick? Auto's do pretty good "squatting" and hook up even easier.

JIM
Reply
Old Jan 12, 2020 | 03:06 PM
  #53  
Larry Parks's Avatar
Larry Parks
Intermediate
 
Joined: Jan 2020
Posts: 29
Likes: 4
From: Ennis TEXAS
Default

Its gonna be auto especially for the reduced stress on rear. Probably a 625hp/600 tq oval port 496 11:1 alum head pump gas. Good 3" shafts with good joints, new 1541H outer stubs. I was gonna get some grade 8 all thread and make some adjustable height hardware for rear spring lowering. This is not happening anytime soon just clean up for now gonna plan on paint removal this year and return the 68 gills back

Last edited by Larry Parks; Jan 12, 2020 at 03:53 PM.
Reply
Old Jan 12, 2020 | 03:52 PM
  #54  
Little Mouse's Avatar
Little Mouse
Le Mans Master
15 Year Member
 
Joined: Apr 2006
Posts: 5,403
Likes: 95
Default

Jim, you have a close up picture of your rearend setup the center section or one like it.
Reply
Old Jan 12, 2020 | 11:08 PM
  #55  
427Hotrod's Avatar
427Hotrod
Thread Starter
Race Director
25 Year Member
Liked
Loved
Top Answer: 5
 
Joined: Jan 2000
Posts: 13,019
Likes: 2,262
From: Corsicana, Tx
2020 C2 of the Year - Modified Winner
2020 Corvette of the Year (performance mods)
C2 of Year Winner (performance mods) 2019
2017 C2 of Year Finalist
Default

Originally Posted by Little Mouse
Jim, you have a close up picture of your rearend setup the center section or one like it.
I lost all the pics of mine when it was apart. Haven't had to go inside of it since I put it under there. Here's some of a similar one we found and Mike (TRACCDOG) went through for a buddy of mine. It has a spool and a one piece axle whereas mine has a Posi and two axles. But looks similar. Mine uses a 3/4" aluminum plate that bolts to cover area and then Vette cover bolts to it. I included a view of it under the car. It's based off a Hemi housing that has a place for a pinion snubber mount which makes it easy to build a front mount.

You can see how big a Dana 60 is compared to a Vette diff. 9.75" ring gear vs 8.2"!

JIM





Reply
Old Jan 13, 2020 | 01:41 PM
  #56  
Little Mouse's Avatar
Little Mouse
Le Mans Master
15 Year Member
 
Joined: Apr 2006
Posts: 5,403
Likes: 95
Default

What if someone took a dana 60 say out of a pickup removed the tubes shortened them to almost nothing in length then made a, ill call it a yoke for the Ujoint mounted to the axle end flange. Have always thought the dana 60 a better rear end then the ford 9 inch other then the nice option of changing third members the ford rear has.

Last edited by Little Mouse; Jan 13, 2020 at 01:45 PM.
Reply
Old Jan 13, 2020 | 02:54 PM
  #57  
Larry Parks's Avatar
Larry Parks
Intermediate
 
Joined: Jan 2020
Posts: 29
Likes: 4
From: Ennis TEXAS
Default

These looked pretty good to me at Denny's https://www.dennysdriveshaft.com/p1_...shaft_3_i.html
Reply

Get notified of new replies

To Finally!! In the 8's!!

Old Jan 13, 2020 | 08:14 PM
  #58  
7t9l82's Avatar
7t9l82
Le Mans Master
15 Year Member
Conversation Starter
Photogenic
Community Favorite
 
Joined: Oct 2010
Posts: 6,938
Likes: 848
From: melbourne florida
2023 C3 of the Year Finalist - Modified
Default

Originally Posted by Little Mouse
What if someone took a dana 60 say out of a pickup removed the tubes shortened them to almost nothing in length then made a, ill call it a yoke for the Ujoint mounted to the axle end flange. Have always thought the dana 60 a better rear end then the ford 9 inch other then the nice option of changing third members the ford rear has.
The Dana is a stronger rear. Pro stock went from the Dana to the 9" decades ago because it was lighter and gear changes were easier. Just swap the pumpkin. A Dana it's has been done before.then you just break everything else lol
Reply
Old Jan 13, 2020 | 10:08 PM
  #59  
Little Mouse's Avatar
Little Mouse
Le Mans Master
15 Year Member
 
Joined: Apr 2006
Posts: 5,403
Likes: 95
Default

I don't know 427 hot rodder lol has been beating on that 5 speed for a long time with lots of tq. I guess if he can find a way to break it he will try to shoehorn in a liberty 5 speed. I did read where Jenkins ran a dana 60 in his Vega, in 74 for a very short time he tried to make a 12 bolt work, to much grief he went back to the dana.

Last edited by Little Mouse; Jan 13, 2020 at 10:16 PM.
Reply
Old Jan 14, 2020 | 07:34 AM
  #60  
69ttop502's Avatar
69ttop502
Le Mans Master
25 Year Member
Liked
Loved
Community Favorite
 
Joined: Mar 2001
Posts: 6,240
Likes: 1,013
From: Watkinsville, GA and Glen Cove, NY
Default

Originally Posted by Little Mouse
I don't know 427 hot rodder lol has been beating on that 5 speed for a long time with lots of tq. I guess if he can find a way to break it he will try to shoehorn in a liberty 5 speed. I did read where Jenkins ran a dana 60 in his Vega, in 74 for a very short time he tried to make a 12 bolt work, to much grief he went back to the dana.
His tranny is a Gforce GF5r so he has a strong one there. I believe they are rated to 1300 or so hp depending.
Reply



All times are GMT -4. The time now is 05:56 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