C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

383 Stroker Build Thread

Thread Tools
 
Search this Thread
 
Old Jan 22, 2021 | 04:05 PM
  #41  
Alejandro Guerrero's Avatar
Alejandro Guerrero
Thread Starter
Racer
 
Joined: Jul 2019
Posts: 399
Likes: 37
From: Kansas City Metro Area, Missouri
Default

Should I change my engine mounts? Car has 100k miles. Is there a good way to check if mine are still good or is it best to just do it while the engine is out.
Reply
Old Jan 23, 2021 | 07:59 AM
  #42  
renegade69's Avatar
renegade69
Pro
 
Joined: Aug 2011
Posts: 506
Likes: 57
From: New York
Default

I would change the engine mounts now rather than later. I put new stock replacements when I installed my 383. A year later they were shot so I replaced them with poly mounts. The poly mounts made a world of difference. The engine moved so much with the stock worn out mounts that I broke the mechanical oil pressure gauge line 3 times. Figured the 3rd time was my last warning. Do it now.
Reply
Old Jan 27, 2021 | 11:55 AM
  #43  
Alejandro Guerrero's Avatar
Alejandro Guerrero
Thread Starter
Racer
 
Joined: Jul 2019
Posts: 399
Likes: 37
From: Kansas City Metro Area, Missouri
Default


Can anyone tell me what this is? It's been over a month since I removed it so I can't remember, I just know it came out during the process of removing the engine / transmission / bellhousing. I looked in my service manual diagrams and couldn't find anything. Appreciate any help
Reply
Old Jan 27, 2021 | 12:07 PM
  #44  
AgentEran's Avatar
AgentEran
Drifting
10 Year Member
 
Joined: Apr 2014
Posts: 1,699
Likes: 231
From: Hawthorne CA
Default

Originally Posted by Alejandro Guerrero

Can anyone tell me what this is? It's been over a month since I removed it so I can't remember, I just know it came out during the process of removing the engine / transmission / bellhousing. I looked in my service manual diagrams and couldn't find anything. Appreciate any help
Its the plate between the bell housing and the tranny
Reply
Old Jan 27, 2021 | 12:14 PM
  #45  
Alejandro Guerrero's Avatar
Alejandro Guerrero
Thread Starter
Racer
 
Joined: Jul 2019
Posts: 399
Likes: 37
From: Kansas City Metro Area, Missouri
Default

Originally Posted by AgentEran
Its the plate between the bell housing and the tranny
Mine got kind of bent up during removal, is this something I can just bend back to being mostly flat and put back? I would just buy a new one but so far I haven't been able to find one.
Reply
Old Jan 27, 2021 | 12:21 PM
  #46  
AgentEran's Avatar
AgentEran
Drifting
10 Year Member
 
Joined: Apr 2014
Posts: 1,699
Likes: 231
From: Hawthorne CA
Default

Originally Posted by Alejandro Guerrero
Mine got kind of bent up during removal, is this something I can just bend back to being mostly flat and put back? I would just buy a new one but so far I haven't been able to find one.
Sure. I've had to "flatten" these a few times before. Is it currently in the condition seen in the picture?
Reply
Old Jan 27, 2021 | 12:30 PM
  #47  
Alejandro Guerrero's Avatar
Alejandro Guerrero
Thread Starter
Racer
 
Joined: Jul 2019
Posts: 399
Likes: 37
From: Kansas City Metro Area, Missouri
Default

Originally Posted by AgentEran
Sure. I've had to "flatten" these a few times before. Is it currently in the condition seen in the picture?
Yup, just took that a hour or two ago
Reply
Old Jan 27, 2021 | 12:48 PM
  #48  
MatthewMiller's Avatar
MatthewMiller
Le Mans Master
Liked
Loved
Community Favorite
Top Answer: 1
 
Joined: Aug 2015
Posts: 6,086
Likes: 1,972
From: St. Charles MO
Default

Originally Posted by Alejandro Guerrero
Mine got kind of bent up during removal, is this something I can just bend back to being mostly flat and put back? I would just buy a new one but so far I haven't been able to find one.
Yeah, it's going to be held flat once you clamp it back between the engine and bellhousing. However, I would take some steel wool and clean the mating surfaces on both sides well. It's important that the transmission sit perfectly straight in there so as not to put a side loading on the input shaft.
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 Jan 28, 2021 | 09:08 PM
  #49  
Alejandro Guerrero's Avatar
Alejandro Guerrero
Thread Starter
Racer
 
Joined: Jul 2019
Posts: 399
Likes: 37
From: Kansas City Metro Area, Missouri
Default

Are these the current part numbers for U-Joints for the Axle/Half shafts. All the information I found is either very vague about it or very old.


https://www.summitracing.com/parts/sdh-5-1350-1x
https://www.summitracing.com/parts/sdh-3-70-28x
Reply
Old Jan 28, 2021 | 09:15 PM
  #50  
MatthewMiller's Avatar
MatthewMiller
Le Mans Master
Liked
Loved
Community Favorite
Top Answer: 1
 
Joined: Aug 2015
Posts: 6,086
Likes: 1,972
From: St. Charles MO
Default

Originally Posted by Alejandro Guerrero
Are these the current part numbers for U-Joints for the Axle/Half shafts. All the information I found is either very vague about it or very old.


https://www.summitracing.com/parts/sdh-5-1350-1x
https://www.summitracing.com/parts/sdh-3-70-28x
1350 is the correct size/style. However, instead of the greasable one you linked, I'd recommend the 5-3615X. It's non-greasable, which makes it stronger, and the caps are coated so they won't corrode to the aluminum yokes.

PS - If you're willing to forego the coated caps, Denny's Driveshafts has a set of four non-greasable Spicers for $70, which is a hell of a lot cheaper than those Summit prices. Many people have run the uncoated caps with zero problems. They sell the same 5-3615X I linked above (coated caps, non-greasable) individually for cheaper than Summit, too.

Last edited by MatthewMiller; Jan 28, 2021 at 09:20 PM.
Reply
Old Jan 28, 2021 | 09:22 PM
  #51  
Alejandro Guerrero's Avatar
Alejandro Guerrero
Thread Starter
Racer
 
Joined: Jul 2019
Posts: 399
Likes: 37
From: Kansas City Metro Area, Missouri
Default

It says these don't fit my car but they appear to be what I need so if they don't I suppose I can just return them. Thanks for the tip
Reply
Old Jan 28, 2021 | 09:34 PM
  #52  
MatthewMiller's Avatar
MatthewMiller
Le Mans Master
Liked
Loved
Community Favorite
Top Answer: 1
 
Joined: Aug 2015
Posts: 6,086
Likes: 1,972
From: St. Charles MO
Default

Originally Posted by Alejandro Guerrero
It says these don't fit my car but they appear to be what I need so if they don't I suppose I can just return them. Thanks for the tip
Not sure why they say that. If you compare the dimensions they are all the same, which they have to be since they are both 1350 form factors. Anyway, Denny's says both versions fit any C2-C4 Corvette, and I know several people who've used the 5-3615X joints on their C4s.
Reply
Old Jan 29, 2021 | 09:42 AM
  #53  
84 4+3's Avatar
84 4+3
Le Mans Master
Liked
Loved
Community Favorite
Top Answer: 1
 
Joined: Aug 2017
Posts: 6,937
Likes: 1,487
From: New Jersey
Default

Originally Posted by MatthewMiller
Not sure why they say that. If you compare the dimensions they are all the same, which they have to be since they are both 1350 form factors. Anyway, Denny's says both versions fit any C2-C4 Corvette, and I know several people who've used the 5-3615X joints on their C4s.
I just put mine in Monday. Can confirm they are identical to the factory ones I removed.
Reply
Old Jan 29, 2021 | 10:12 AM
  #54  
Alejandro Guerrero's Avatar
Alejandro Guerrero
Thread Starter
Racer
 
Joined: Jul 2019
Posts: 399
Likes: 37
From: Kansas City Metro Area, Missouri
Default

Motor mounts also seem to be difficult to find, I only saw one set on summit racing and they are out of stock.

https://www.summitracing.com/parts/dos-a2902

Should I wait for these or getting something else? Local part stores have limited selections

This is basically all I could find and it is 3x the cost with less information
https://shop.advanceautoparts.com/p/anchor-2902-engine-mount-front-right-front-left-2902/20300487-P?searchTerm=motor%20mount
https://www.oreillyauto.com/detail/b/power-torque-mounts-4509/engine-parts---mounts-16774/engine-mounts-16466/engine-mount-12141/31470ece703c/power-torque-engine-mount/b2902/4587531/1994/chevrolet/corvette?q=motor+mount&pos=0

Last edited by Alejandro Guerrero; Jan 29, 2021 at 10:15 AM.
Reply
Old Jan 29, 2021 | 01:14 PM
  #55  
Alejandro Guerrero's Avatar
Alejandro Guerrero
Thread Starter
Racer
 
Joined: Jul 2019
Posts: 399
Likes: 37
From: Kansas City Metro Area, Missouri
Default

So my reverse lights where going bonkers before I took everything apart. There was a period of time when they didn't work at all, then the few days preceding my dismantling of the car they where always on if the car was on. I now have the reverse light switch on my desk and it looks fine, I don't suppose there is a way of testing if this was the problem without the transmission hooked up to, well anything? Is this the most likely culprit?
Reply
Old Jan 29, 2021 | 01:18 PM
  #56  
Alejandro Guerrero's Avatar
Alejandro Guerrero
Thread Starter
Racer
 
Joined: Jul 2019
Posts: 399
Likes: 37
From: Kansas City Metro Area, Missouri
Default

Also considering ordering a short throw shifter, has anyone had problems with not having a reverse lockout? that is the only thing that concerns me. I assume the install will be much more easy with the tranny dropped from the car?
Reply
Old Jan 29, 2021 | 02:43 PM
  #57  
MatthewMiller's Avatar
MatthewMiller
Le Mans Master
Liked
Loved
Community Favorite
Top Answer: 1
 
Joined: Aug 2015
Posts: 6,086
Likes: 1,972
From: St. Charles MO
Default

Originally Posted by Alejandro Guerrero
So my reverse lights where going bonkers before I took everything apart. There was a period of time when they didn't work at all, then the few days preceding my dismantling of the car they where always on if the car was on. I now have the reverse light switch on my desk and it looks fine, I don't suppose there is a way of testing if this was the problem without the transmission hooked up to, well anything? Is this the most likely culprit?
Sure, just test for continuity across it in both positions. It should have continuity when the trans is in reverse, and it should be an open circuit when it's not in reverse. Also, make sure it actually moves to those two positions when it's on the trans and the shifter is placed in and out of reverse.

Last edited by MatthewMiller; Jan 29, 2021 at 02:44 PM.
Reply

Get notified of new replies

To 383 Stroker Build Thread

Old Jan 29, 2021 | 03:58 PM
  #58  
Alejandro Guerrero's Avatar
Alejandro Guerrero
Thread Starter
Racer
 
Joined: Jul 2019
Posts: 399
Likes: 37
From: Kansas City Metro Area, Missouri
Default

Lots of people recommended I get Bosche 3 30lb fuel injectors when I was planning my build but now that I am about done I am starting to think they are not enough. I see many people running injectors closer to 50 lbs and even some near 100, do I need to start looking for bigger ones?
Reply
Old Jan 29, 2021 | 05:20 PM
  #59  
MatthewMiller's Avatar
MatthewMiller
Le Mans Master
Liked
Loved
Community Favorite
Top Answer: 1
 
Joined: Aug 2015
Posts: 6,086
Likes: 1,972
From: St. Charles MO
Default

Originally Posted by Alejandro Guerrero
Lots of people recommended I get Bosche 3 30lb fuel injectors when I was planning my build but now that I am about done I am starting to think they are not enough. I see many people running injectors closer to 50 lbs and even some near 100, do I need to start looking for bigger ones?
My 396 with heads similar to AFR 195 Comps and a smaller CC XFI cam probably made 420rwhp. It had Lucas 38lb injectors, which were plenty for that application.
Reply
Old Feb 1, 2021 | 09:25 AM
  #60  
Alejandro Guerrero's Avatar
Alejandro Guerrero
Thread Starter
Racer
 
Joined: Jul 2019
Posts: 399
Likes: 37
From: Kansas City Metro Area, Missouri
Default

A friend of mine recommended getting a AFR gauge for my car, however my headers only have 1 02 sensor port on each one. Should I run one 02 sensor and one AFR, or have a dual AFR gauge or not run any and have 2 O2 gauges?
Reply



All times are GMT -4. The time now is 12:58 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