EFI conversion question
Race Director
Joined: Sep 1999
Posts: 11,361
Likes: 383
From: Plano TX
I finally decided to upgrade the tank and now have a Rock Valley stainless tank with internal pump. Very happy with it, but it's certainly $$$.
Thread Starter
Racer
Joined: Jun 2015
Posts: 315
Likes: 20
From: Vasteras, Sweden
When I first converted to EFI I did the same thing. The problem I had with that setup was that the engine would stumble any time I turned a corner at less than half tank.
I finally decided to upgrade the tank and now have a Rock Valley stainless tank with internal pump. Very happy with it, but it's certainly $$$.
I finally decided to upgrade the tank and now have a Rock Valley stainless tank with internal pump. Very happy with it, but it's certainly $$$.
Thread Starter
Racer
Joined: Jun 2015
Posts: 315
Likes: 20
From: Vasteras, Sweden
Le Mans Master
Joined: Jan 2001
Posts: 6,741
Likes: 1,383
Thread Starter
Racer
Joined: Jun 2015
Posts: 315
Likes: 20
From: Vasteras, Sweden
Racer
Joined: Jul 2012
Posts: 466
Likes: 13
From: Grand Rapids Mi
Did the same conversion on my 355 and start up and throttle response is amazing. One of the best upgrades to my C3 minus my T5 conversion. I mounted the fuel pump near the gas tank. Only question I have is where did you mount the 3.5 screen? Mounted mine on the dashboard near the speedo/tach.
Thread Starter
Racer
Joined: Jun 2015
Posts: 315
Likes: 20
From: Vasteras, Sweden
Did the same conversion on my 355 and start up and throttle response is amazing. One of the best upgrades to my C3 minus my T5 conversion. I mounted the fuel pump near the gas tank. Only question I have is where did you mount the 3.5 screen? Mounted mine on the dashboard near the speedo/tach.
Easy to monitor and move if i want.
Thread Starter
Racer
Joined: Jun 2015
Posts: 315
Likes: 20
From: Vasteras, Sweden
Done some driving and its all smiles!
Feels like i have a new engine!
Set AFR values to 14,2 idle and 14,7 cruise, engine runs soo good, and the milage has gone up!
Cold start is so easy now compared to the old carb!
For you guys thinking about this...Just do it!!!
Feels like i have a new engine!
Set AFR values to 14,2 idle and 14,7 cruise, engine runs soo good, and the milage has gone up!
Cold start is so easy now compared to the old carb!
For you guys thinking about this...Just do it!!!
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Instructor
Joined: Oct 2002
Posts: 223
Likes: 20
From: jim thorpe pa
Burning Brakes
Joined: Nov 2005
Posts: 1,137
Likes: 51
From: Cartersville GA
Thinking about doing this conversion on my '69 now that I have my T5 installed. I'm in the "gathering data" mode. I have the original distributor with points so I'm thinking PerTronix conversion would be a first step, dial that in then add the EFI. I saw on Summit for the unit I'd purchase as of today they show shipping in August. I'm not in a hurry so it's not a problem for me.
Last edited by 69monzacpe; Jun 30, 2017 at 02:42 PM.
Thread Starter
Racer
Joined: Jun 2015
Posts: 315
Likes: 20
From: Vasteras, Sweden
Done some driving and i must say this the best thing i have done to get performance and driveability.
Coldstarts is a breese and performance is way up!
I get 16mpg mixed driving and the throttle response is awesome!
With a 468 and a Straub cam this is truly amazing!!
You guyes with carb issues, switch to this and welcome to another world!!!!
Coldstarts is a breese and performance is way up!
I get 16mpg mixed driving and the throttle response is awesome!
With a 468 and a Straub cam this is truly amazing!!
You guyes with carb issues, switch to this and welcome to another world!!!!
Safety Car
Joined: Jan 2008
Posts: 3,795
Likes: 435
From: Aarhus, Denmark
Thinking about doing this conversion on my '69 now that I have my T5 installed. I'm in the "gathering data" mode. I have the original distributor with points so I'm thinking PerTronix conversion would be a first step, dial that in then add the EFI. I saw on Summit for the unit I'd purchase as of today they show shipping in August. I'm not in a hurry so it's not a problem for me.
I have a 1987 T5WC, that I assume can be bolted right on my L46 bell house?
I assume I only need to unbolt the transmission (the 4 bolts), and leave the bell house on he engine and blot on the T5 correct?
My transmission is the factory L46 M21
Pro
Joined: Aug 2000
Posts: 708
Likes: 21
From: Montrose CA
Agree with others... let the computer control the timing.
Don't know about Sniper but MSD Atomic uses timing control to pull the idle speed to a specified level on top of where the cable stop lets the engine idle - excellent because you can change the idle speed at will in real time with the controller.
Also better because you can somewhat dial-in an advance curve. Somewhat because if I recall correctly the MSD lets you pick a few data points such as idle advance, rpm where more advance starts and all-in rpm and total advance.
Be careful - more choices means more opportunities to screw it up - but its easy to fix because you just use the controller to change the settings... try that on your Camry.
Best,
Carl
Thread Starter
Racer
Joined: Jun 2015
Posts: 315
Likes: 20
From: Vasteras, Sweden
Agree with others... let the computer control the timing.
Don't know about Sniper but MSD Atomic uses timing control to pull the idle speed to a specified level on top of where the cable stop lets the engine idle - excellent because you can change the idle speed at will in real time with the controller.
Also better because you can somewhat dial-in an advance curve. Somewhat because if I recall correctly the MSD lets you pick a few data points such as idle advance, rpm where more advance starts and all-in rpm and total advance.
Be careful - more choices means more opportunities to screw it up - but its easy to fix because you just use the controller to change the settings... try that on your Camry.
Best,
Carl
Don't know about Sniper but MSD Atomic uses timing control to pull the idle speed to a specified level on top of where the cable stop lets the engine idle - excellent because you can change the idle speed at will in real time with the controller.
Also better because you can somewhat dial-in an advance curve. Somewhat because if I recall correctly the MSD lets you pick a few data points such as idle advance, rpm where more advance starts and all-in rpm and total advance.
Be careful - more choices means more opportunities to screw it up - but its easy to fix because you just use the controller to change the settings... try that on your Camry.
Best,
Carl
Thread Starter
Racer
Joined: Jun 2015
Posts: 315
Likes: 20
From: Vasteras, Sweden
Final report on my EFI.
With a 468, 10,5 CR, Straub cam and Holley EFI i have achived 16mpg highway and an awesome performance...the way it pulls is amazing!!!
This is way over what i expected!!
The Straub cam works soo god with my engine with EFI.
With a 468, 10,5 CR, Straub cam and Holley EFI i have achived 16mpg highway and an awesome performance...the way it pulls is amazing!!!
This is way over what i expected!!
The Straub cam works soo god with my engine with EFI.
Melting Slicks
Joined: Jun 2016
Posts: 2,979
Likes: 332
From: Woodinville WA
Are those 16 UK / Imperial gallons (4.55 liters per gallon) or US gallons (3.8 liters per gallon)?
Adam
Thread Starter
Racer
Joined: Jun 2015
Posts: 315
Likes: 20
From: Vasteras, Sweden
TheCorvetteBen
Joined: Feb 2007
Posts: 4,987
Likes: 144
From: Van Alstyne, TX
Why did you not use the factory steel line for your main line along the frame? Is it not big enough to handle the amount of fuel that you need? I would prefer that over a rubber line from tank to engine bay
Race Director
Joined: Aug 2004
Posts: 10,628
Likes: 132
From: Duvall, WA
It’s not a rubber hose. Holley provides a PTFE lined hose designed for fuel injection.
TheCorvetteBen
Joined: Feb 2007
Posts: 4,987
Likes: 144
From: Van Alstyne, TX
