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  #1  
Old 10-08-2018, 07:59 AM
t walgamuth's Avatar
dieselarchitect
 
Join Date: Apr 2005
Location: Lafayette Indiana
Posts: 34,348
Conversion from carburator to throttle body

HI. I'm having trouble with the Edelbrock on the Cobra. It's fine when just tooling around town and so forth but on the autocross course when turning left and right and accelerating and decelerating it creates a lean miss making the car pretty much undrivable.

Just wondering how hard it is to put in a throttle body system? For starters I assume a new fuel pump is in order.
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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.
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  #2  
Old 10-08-2018, 10:53 AM
A Talent for Obfuscation
 
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Location: In the Deep State
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Quote:
Originally Posted by t walgamuth View Post
HI. I'm having trouble with the Edelbrock on the Cobra. It's fine when just tooling around town and so forth but on the autocross course when turning left and right and accelerating and decelerating it creates a lean miss making the car pretty much undrivable.

Just wondering how hard it is to put in a throttle body system? For starters I assume a new fuel pump is in order.
Which generation Chevy small block is this?
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  #3  
Old 10-08-2018, 11:14 AM
t walgamuth's Avatar
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Location: Lafayette Indiana
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I'm not sure. First I suspect. It is pushrods for sure.
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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.
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  #4  
Old 10-08-2018, 11:19 AM
Dubyagee's Avatar
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Location: SE
Posts: 4,881
Holley sniper efi
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  #5  
Old 10-08-2018, 11:24 AM
A Talent for Obfuscation
 
Join Date: Feb 2013
Location: In the Deep State
Posts: 10,595
From the ad for the Cobra:

427 cu in motor with 550 HP.

Features include:

- Rodeck 350 alluminum block.
- Billet Crank by Scat Cranks (41/8" bore x 4" stroke)
- Connecting rods - Track Lite by Manley. Ross custom pistons.
- Compression ratio of 10.2 to 1
- Aluminum 210cc cylinder heads by Air Flow Reasearch
- Solid Roller cams by Crower, Jesel Rocker Arm Shafts and Cam Drive kit
- Jones Front Pulleys
- 4 Weber 48 ida' Carbs
- Intake Manifold by Pierce Manifolds
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  #6  
Old 10-08-2018, 02:03 PM
t walgamuth's Avatar
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Yes. I have a copy of that too.
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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.
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  #7  
Old 10-08-2018, 02:26 PM
A Talent for Obfuscation
 
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Location: In the Deep State
Posts: 10,595
Well I hope so! (Point being that some of these specs may influence fuel injection system choice and sizing.)
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  #8  
Old 10-08-2018, 05:02 PM
t walgamuth's Avatar
dieselarchitect
 
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Location: Lafayette Indiana
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Yes. Thanks!
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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.
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  #9  
Old 10-08-2018, 07:27 PM
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Quote:
Originally Posted by t walgamuth View Post
HI. I'm having trouble with the Edelbrock on the Cobra. It's fine when just tooling around town and so forth but on the autocross course when turning left and right and accelerating and decelerating it creates a lean miss making the car pretty much undrivable.

Just wondering how hard it is to put in a throttle body system? For starters I assume a new fuel pump is in order.



Is the float height adjusted properly?
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  #10  
Old 10-08-2018, 08:04 PM
t walgamuth's Avatar
dieselarchitect
 
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I don't know. Trouble is it runs fine if I'm not autocrossing, also ran fine at Winchester speedway. I can adjust all I want but until I can run it hard around corners I won't know if it is right or not.
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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.
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  #11  
Old 10-08-2018, 10:15 PM
iwrock's Avatar
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Location: Hella NorCal
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https://www.holley.com/products/fuel_systems/fuel_injection/terminator_efi/terminator_4bbl_tbi_kits/

There's a few companies that make EFI kits that swap in place of a carbureator, though I think you may have to swap your intake manifold for one that has a single carb.
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  #12  
Old 10-08-2018, 10:17 PM
iwrock's Avatar
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Just add a fuel system kit and away you go.

https://www.holley.com/products/fuel_systems/fuel_injection/terminator_efi/fuel_system_kits/
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-Justin

01 Honda S2000 - dogs dd
07 MB ML320 CDI - dd
16 Lexus IS250 - wifes dd

it's automatic.
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  #13  
Old 10-09-2018, 06:34 AM
t walgamuth's Avatar
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That looks pretty good! Thanks iwrock!
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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.
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  #14  
Old 10-15-2018, 04:41 PM
t walgamuth's Avatar
dieselarchitect
 
Join Date: Apr 2005
Location: Lafayette Indiana
Posts: 34,348
I just ordered one of the Holley TBI setups.
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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.
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  #15  
Old 10-16-2018, 12:44 AM
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Tony
 
Join Date: Oct 2005
Location: Bandon, Oregon
Posts: 1,027
As I intend to use an aftermarket EFI and ignition on my 5.6 project I had read everything I can find about them. I will be interested in your feedback. What fuel pump are you going to use? Will your Cobra accommodate an in tank fuel pump?
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111 280SE 3.5 Coupe
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