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

Single Plane EFI manifold conversion for C4 Vettes- Prototype Finished!

Thread Tools
 
Search this Thread
 
Old Nov 7, 2003 | 11:06 PM
  #61  
Da-Cajun's Avatar
Da-Cajun
Pro
15 Year Member
 
Joined: Jan 2002
Posts: 657
Likes: 1
From: Some where, I'm still looking. Texas
Default Re: Single Plane EFI manifold conversion for C4 Vettes- Prototype Finished! (ski_dwn_it)

I see a bunch of Superams on the market in the not for far future!! :leaving: Are am I wrong?
Reply
Old Nov 7, 2003 | 11:20 PM
  #62  
Mr6spd's Avatar
Mr6spd
Burning Brakes
20 Year Member
 
Joined: Sep 2001
Posts: 1,013
Likes: 9
Default Re: Single Plane EFI manifold conversion for C4 Vettes- Prototype Finished! (jburnett)

Jeb and Jesse,

One thought that may help with the throttle body to water neck clearance issues: There is no reason that the IAC has to be installed under the throttle body. Get that out of there for more clearance to the water neck.

The IAC can be remotely mounted and feed directly into the plenum. The IAC just has an air inlet and outlet passage. You can just trim the water passage part of the IAC housing off, bolt a 1/4" plate to the housing, drill and tap for two hose fittings. Then just run the hose from the inlet side to the air filter housing (or a small seperate filter, a breather filter would do). Then run the outlet side hose directly to the plenum.

You could install a thin flat block off plate under the throttle body (or just plug the holes by some other means).
Reply
Old Nov 8, 2003 | 08:40 AM
  #63  
ski_dwn_it's Avatar
0ski_dwn_it
Former Vendor
 
Joined: Jun 2001
Posts: 7,204
Likes: 6
From: St Marys PA
Default Re: Single Plane EFI manifold conversion for C4 Vettes- Prototype Finished! (Mr6spd)

Mr6sp...

Tha is a very good idea and yes i would work.

We are trying to come up with a design that will allow the end user to just simply bolt the unit on. While also limiting the required work Jeb will need to to.

Even with the IAC removed there would still be a need to rework the Tstat housing/water neck, so we figured it would be easiest to kill two birds with one stone. Not to mention the front, where the 3/4 NPT and 5/8 NPT heater nipple and coolant sensor need to be, is very thin, so rework of that area would need to be done anyways.

:cheers:
Reply
Old Nov 10, 2003 | 12:47 PM
  #64  
jburnett's Avatar
jburnett
Thread Starter
Drifting
20 Year Member
 
Joined: Feb 2002
Posts: 1,952
Likes: 2
From: Little Rock Arkansas
Default Re: Single Plane EFI manifold conversion for C4 Vettes- Prototype Finished! (ski_dwn_it)

I've just finished the manifold for the second time...Hopefully all issues are resolved. The main issues; the plenum length and the t-stat location are DONE. Instead of installing a t-stat flange on the front of the casting (ala small Ford) I went ahead with my original plan and milled down the entire casting. I cut the original flange off and then milled it down about 2" (there's A LOT of room there) and TIG welded the flange back on; if it weren't for the TIG welds you could never tell it didn't come that way from the factory!! The quandry now is where to put the CTS and the heater hose bung but I think that's solved too...I'm going to put the CTS down on the front like it is in the factory manifold and then use a 90* barbed fitting mounted topside for the heater hose...That should put them in line and will definitely give enough clearance.

The plenum was relatively simple to modify...I cut off the flange and about an inch of the box. I then built a new tapered extension and angled it down to follow the line of the hood. Simple...

I'm getting ready to email Jesse some new pics so I'm sure he'll post them when he gets them. Please be aware that this IS a prototype and production units will not only look a little different but will also be A LOT NICER!! This sum-bitch is FUGLY with all of the cutting/milling/welding that I've had to do to modify it along the way!
-Jeb
Reply
Old Nov 10, 2003 | 01:07 PM
  #65  
Z-PDX's Avatar
Z-PDX
Racer
 
Joined: Apr 2003
Posts: 350
Likes: 1
From: portland or
Default Re: Single Plane EFI manifold conversion for C4 Vettes- Prototype Finished!

Looks great guys. Very impressive.

Theoretical question here.

I have some experience with the manifold in carbuereted applications and really didn't like it for street use. Does the fuel injection solve the lack of a clean low-end?

Just curious why you chose this manifold as a base instead of, say, the Torker.

Thanks for the info and, again, great work!

-Z
Reply
Old Nov 10, 2003 | 02:22 PM
  #66  
jburnett's Avatar
jburnett
Thread Starter
Drifting
20 Year Member
 
Joined: Feb 2002
Posts: 1,952
Likes: 2
From: Little Rock Arkansas
Default Re: Single Plane EFI manifold conversion for C4 Vettes- Prototype Finished! (Z-PDX)

The dry flow characteristics of EFI changes things somewhat...Additionally carbed single planes DID indeed used to be lazy on the street but that has been rectified for a large part by the new head and cam technology we're graced with now. You will still lose some bottom end with this manifold like is to be expected on a shorter runner system; however the losses are far overshadowed by the increases in mid-range and top-end power.

Why did I choose the Victor series over the Torker?? Flow for the most part...They flow more than a Torker and are closer to equal length runners. Plus, and to be honest, I never really thought about doing a Torker... If you wanna do one out of a Torker I'll certainly do it for you; for that matter if ANYONE wants one of these out of a different manifold I'd be willing to work with you.
-Jeb
Reply
Old Nov 10, 2003 | 02:56 PM
  #67  
ski_dwn_it's Avatar
0ski_dwn_it
Former Vendor
 
Joined: Jun 2001
Posts: 7,204
Likes: 6
From: St Marys PA
Default Re: Single Plane EFI manifold conversion for C4 Vettes- Prototype Finished! (jburnett)

Here are the new pictures: Thanks Jeb...let me know the tracking number if you have it, so I can watch for it. I have tomorrow off work, so I can probably get it installed etc, in plenty of time to get it tuned. :cheers:











:cheers: :cheers:


[Modified by ski_dwn_it, 2:59 PM 11/10/2003]
Reply
Old Nov 10, 2003 | 03:39 PM
  #68  
Z-PDX's Avatar
Z-PDX
Racer
 
Joined: Apr 2003
Posts: 350
Likes: 1
From: portland or
Default Re: Single Plane EFI manifold conversion for C4 Vettes- Prototype Finished! (jburnett)

Jeb -

Thanks for the thoughtful reply. Interesting thoughts on wet vs. dry.

re: EFI on a Torker. You're on! Sounds like you have your hands full with this project, but when you're ready for a new challenge. Say the word! I'll send you one (and a wheelbarrow of twenties).:D

-Z
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 Nov 10, 2003 | 03:54 PM
  #69  
jburnett's Avatar
jburnett
Thread Starter
Drifting
20 Year Member
 
Joined: Feb 2002
Posts: 1,952
Likes: 2
From: Little Rock Arkansas
Default Re: Single Plane EFI manifold conversion for C4 Vettes- Prototype Finished! (Z-PDX)

G**DAMMIT!!!!! I've run into a problem... The little spacer plate I welded onto the box to move the FPR out of the way is too low and the FPR hits the rail still!!! Oh well, that's the ONLY issue I see and it's pretty minor; Jesse you'll have to zip tie it up! :D

It's also too late for it to go out today but it will leave tomorrow morning on Next Day Air. And I think before I bust off another $80 in UPS freight I'm going to pull the SR off my wife's car tonight and make DAMN sure it fits! If it doesn't that will give me "JUST" enough time to rectify it before it needs to go out tomorrow.
-Jeb
Reply
Old Nov 11, 2003 | 12:53 PM
  #70  
jburnett's Avatar
jburnett
Thread Starter
Drifting
20 Year Member
 
Joined: Feb 2002
Posts: 1,952
Likes: 2
From: Little Rock Arkansas
Default Re: Single Plane EFI manifold conversion for C4 Vettes- Prototype Finished! (jburnett)

IT FITS!!!! I had my wife pull her SR off of her '85 yesterday afternoon so I could try the single plane conversion on it BEFORE I sent it back out to Jesse... Fit like it was MADE for it (oh, wait it was!). So, barring any other issues Jesse will have it tomorrow and should have it ready by the weekend. I hope he doesn't run into anything else because I'm leaving for New Mexico to tune a '80 Vette I built for a guy and won't be back til Sunday!
-Jeb
Reply
Old Nov 11, 2003 | 12:55 PM
  #71  
scorp508's Avatar
scorp508
Team Owner
Supporting Lifetime Gold
25 Year Member
Liked
Loved
Community Favorite
 
Joined: Mar 2000
Posts: 83,383
Likes: 87
From: Boston, MA
Default Re: Single Plane EFI manifold conversion for C4 Vettes- Prototype Finished! (jburnett)

I had my wife pull her SR off of her '85 yesterday afternoon
Did she do it herself? If so then NONE of these guys are allowed to bitch again about an SR install. :D
Reply
Old Nov 11, 2003 | 12:57 PM
  #72  
Ramanstud's Avatar
Ramanstud
Melting Slicks
 
Joined: Oct 2002
Posts: 3,193
Likes: 1
From: Cincinnati Oh
Default Re: Single Plane EFI manifold conversion for C4 Vettes- Prototype Finished! (jburnett)

IT FITS!!!! I had my wife pull her SR off of her '85 yesterday afternoon so I could try the single plane conversion on it BEFORE I sent it back out to Jesse... Fit like it was MADE for it (oh, wait it was!). -Jeb
:party:
Reply
Old Nov 11, 2003 | 01:11 PM
  #73  
jburnett's Avatar
jburnett
Thread Starter
Drifting
20 Year Member
 
Joined: Feb 2002
Posts: 1,952
Likes: 2
From: Little Rock Arkansas
Default Re: Single Plane EFI manifold conversion for C4 Vettes- Prototype Finished! (scorp508)

Yeah, she's pretty handy and I certainly wasn't going to do it. I've been using SR's for YEARS and can R&R one pretty quickly; but she can do it just as fast if not faster...Smaller hands help.
-Jeb
Reply
Old Nov 11, 2003 | 01:12 PM
  #74  
mistaben's Avatar
mistaben
Burning Brakes
 
Joined: Aug 2003
Posts: 944
Likes: 0
From: Mesa Az
Default Re: Single Plane EFI manifold conversion for C4 Vettes- Prototype Finished! (jburnett)

oh yeah... i bet the wife was happy about that one :eek: :cheers: :cool: :smash: :lol:
i wish my girlfriend had the same attitude, lol
Reply
Old Nov 11, 2003 | 01:12 PM
  #75  
scorp508's Avatar
scorp508
Team Owner
Supporting Lifetime Gold
25 Year Member
Liked
Loved
Community Favorite
 
Joined: Mar 2000
Posts: 83,383
Likes: 87
From: Boston, MA
Default Re: Single Plane EFI manifold conversion for C4 Vettes- Prototype Finished! (jburnett)

Yeah, she's pretty handy and I certainly wasn't going to do it. I've been using SR's for YEARS and can R&R one pretty quickly; but she can do it just as fast if not faster...Smaller hands help.
-Jeb
Do you have a daughter? I clean up nice! :D ;)
Reply
Old Nov 11, 2003 | 02:12 PM
  #76  
HC4-Vette's Avatar
HC4-Vette
Racer
 
Joined: Sep 2003
Posts: 260
Likes: 0
From: Indianapolis IN
Default Re: Single Plane EFI manifold conversion for C4 Vettes- Prototype Finished! (scorp508)

I would happy if I could just get my wife to put air in her tires
:lol:
Reply
Old Nov 11, 2003 | 02:29 PM
  #77  
Mr. Magoo's Avatar
Mr. Magoo
Team Owner
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Jun 2000
Posts: 22,379
Likes: 94
From: Damn taxes! Pimpin' Ain't Easy in Massachusetts
2018 C4 of Year Finalist
St. Jude Donor '03-'04-'08-'09
Default Re: Single Plane EFI manifold conversion for C4 Vettes- Prototype Finished! (HC4-Vette)

I would happy if I could just get my wife to put air in her tires
:lol:
I remember an X-girlfriend of mine thought her Oil was low so she put 2 quarts of 10w30 in the windshield washer fluid tank. :lol: :leaving:


Reply

Get notified of new replies

To Single Plane EFI manifold conversion for C4 Vettes- Prototype Finished!

Old Nov 11, 2003 | 03:30 PM
  #78  
TA's Avatar
TA
Team Owner
25 Year Member
Top Answer: 1
Top Answer: 3
Top Answer: 5
 
Joined: Dec 2000
Posts: 21,094
Likes: 282
From: Phila., PA burbs
Default Re: Single Plane EFI manifold conversion for C4 Vettes- Prototype Finished! (Mr. Magoo)

I remember an X-girlfriend of mine thought her Oil was low so she put 2 quarts of 10w30 in the windshield washer fluid tank. :lol: :leaving:
:lol: :lol: :lol: :lolg: :lolg:
Reply
Old Nov 11, 2003 | 04:03 PM
  #79  
mistaben's Avatar
mistaben
Burning Brakes
 
Joined: Aug 2003
Posts: 944
Likes: 0
From: Mesa Az
Default Re: Single Plane EFI manifold conversion for C4 Vettes- Prototype Finished! (TA)

HAHAHAHAA!!! ROFLMAO!!! :lolg: :lolg: :lolg: :lolg:
Reply
Old Nov 12, 2003 | 01:21 PM
  #80  
ski_dwn_it's Avatar
0ski_dwn_it
Former Vendor
 
Joined: Jun 2001
Posts: 7,204
Likes: 6
From: St Marys PA
Default Re: Single Plane EFI manifold conversion for C4 Vettes- Prototype Finished! (mistaben)

Good news! Intake showed up today...weird thing is my shipping people called me in my office and said they had something for me. Turned out the UPS guy delievered it here at the factory :skep:

Opened it up here in the office, held my TB up to it and it looks awesome! *should* be able to fire it up after about 2 hours of work, if that tonight. Get it tuned fairly decent in about another 1.5 hours, then try a few WOT blast on her to dial in the WOT fuel.

I have GOOD feelings about the performance gains with it.

But the proof is in the pudding.

:cheers: :thumbs:
Reply



All times are GMT -4. The time now is 05:28 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