Fuel injection

[thunderguns71]

I'm going to run a Walboro in-tank unit. I need a new tank anyway and this was the excuse I needed to go ahead and replace it. I thought about using their "fuel command center" that mounts under the hood so you can use your existing mechanical fuel pump, but it's already cluttered under there as it is. I'll also be using the Fitech to control my timing and bought the 1200hp version.

 

[Chopper]

jbojo, it's the GV that got you the gas milage. I went from 7mpg to 10mpg with the GV change.

A long time ago I put a holley analog projection on and it was okay. The newer systems are much more sophisticated.

Pegleg - Jbojo and I have similar setups. He has a bigger cam and 3.89 instead of 3.50 but otherwise pretty close except for the air/fuel system. He gets better gas milage than I do. He's probably spent more time fine tuning it since he drives it more. Of course, having three carbs on my car doesn't help.

Damn!!!! 7-10mpg Thats unreal when you consider what modern soulless cars get mpg. Still, i would rather have a Mustang with soul & character

Haha, yeah. The 'lower' rear endgearing will kill gas milage. The GV overdrive really helped but probably won't pay for itself in saved fuel since I don't drive it more than a couple thousand miles a year (if that). But the OD also really makes it more pleasureable to drive, especially on the highways.

The tripower doesn't help either. I am actually 'over carbureted' and I haven't had the time to tune it. I could probably squeeze another mile or two out of it.



If I went fuel injection I would have to make it sexy. Something like this:

or this

If this isn't car porn I don't know what is!

Sent from my iPhone using Tapatalk

 

[Pegleg]

jbojo, it's the GV that got you the gas milage. I went from 7mpg to 10mpg with the GV change.

A long time ago I put a holley analog projection on and it was okay. The newer systems are much more sophisticated.

Pegleg - Jbojo and I have similar setups. He has a bigger cam and 3.89 instead of 3.50 but otherwise pretty close except for the air/fuel system. He gets better gas milage than I do. He's probably spent more time fine tuning it since he drives it more. Of course, having three carbs on my car doesn't help.

Damn!!!! 7-10mpg Thats unreal when you consider what modern soulless cars get mpg. Still, i would rather have a Mustang with soul & character

Haha, yeah. The 'lower' rear endgearing will kill gas milage. The GV overdrive really helped but probably won't pay for itself in saved fuel since I don't drive it more than a couple thousand miles a year (if that). But the OD also really makes it more pleasureable to drive, especially on the highways.

The tripower doesn't help either. I am actually 'over carbureted' and I haven't had the time to tune it. I could probably squeeze another mile or two out of it.



If I went fuel injection I would have to make it sexy. Something like this:

or this

Well, If you going restomod That fuel injection is very sexy. If i were going down that route, which i'm not, i would definately fit that sexy shapely Fuel Injection and run around with no hood :coolphotos: :bravo:

 

[basstrix]

I'm with Mike, I haven't had that issue either.

Tim

Thanks for the input, guys. I've had that issue in the past. The predator carb was a guarantee to heat soak and flood and the 3310 would do it on occasion too. Ceramic coating on the headers probably would have helped a lot. A 1" phenolic spacer would probably have done wonders for it as well.

My intent is to completely eliminate the above issue via EFI.

RPM Range: 2500-6800

Advertised Duration: 290/290

Duration @ .050: 225/235

Lift: .530/.550

Lobe Center: 110

MSD EFI does not like durations greater than 250* @ .050, probably the same for FiTech.

Good to know the MSD handles it OK. I went back and looked at the ranchero thread again....this guy's cam is 290/300 advertised and 232/[email protected] with a 106* LSA (83* of overlap). Yours comes out to 70*.

One more question...this in reference to FiTech's explanation given to the guy on ranchero forum, do you have a single or dual plane intake? FiTech claims his single plane intake is responsible for the unburned hydro-carbons making it to the O2 sensor. I've read that EFI systems like wide LSA's...but I think that applies to the port injected EFI using the long, torque efficient intake designs. I think that came about from guys putting a narrow LSA cam in an engine using long intake runner EFI and getting poor low end response. If you mismatch a carbed engine this way, you'll still get poor low end response.

Here's the post (#152) if anyone wants to read: http://www.ranchero.us/forum/index.php?threads/1967-500-buster-main-restoration-thread.3688/page-8

I'm going to run a Walboro in-tank unit. I need a new tank anyway and this was the excuse I needed to go ahead and replace it. I thought about using their "fuel command center" that mounts under the hood so you can use your existing mechanical fuel pump, but it's already cluttered under there as it is. I'll also be using the Fitech to control my timing and bought the 1200hp version.

I'm also very interested in the FiTech unit. I think TonyMuscle is also going to install this system on his stang. I look forward to reading about the install & results from you guys.

 

[Don C]

I've read that EFI systems like wide LSA's...but I think that applies to the port injected EFI using the long, torque efficient intake designs. I think that came about from guys putting a narrow LSA cam in an engine using long intake runner EFI and getting poor low end response. If you mismatch a carbed engine this way, you'll still get poor low end response.

Your comment about long runners and poor response reminded me of these things:

 

[basstrix]

Yeah, that's a pretty radical design. Coupled with the right cam, I bet it makes gobs of torque down low. Cool pic!

I wonder if those truncated ports are 1/4 wave resonators?

 

[Don C]

I wondered about those, too. They were called SonoRamic manifolds and from what I could gather were tuning for better mid-range power.

 

[jbojo]

I'm with Mike, I haven't had that issue either.

Tim

Thanks for the input, guys. I've had that issue in the past. The predator carb was a guarantee to heat soak and flood and the 3310 would do it on occasion too. Ceramic coating on the headers probably would have helped a lot. A 1" phenolic spacer would probably have done wonders for it as well.

My intent is to completely eliminate the above issue via EFI.

RPM Range: 2500-6800

Advertised Duration: 290/290

Duration @ .050: 225/235

Lift: .530/.550

Lobe Center: 110

MSD EFI does not like durations greater than 250* @ .050, probably the same for FiTech.

Good to know the MSD handles it OK. I went back and looked at the ranchero thread again....this guy's cam is 290/300 advertised and 232/[email protected] with a 106* LSA (83* of overlap). Yours comes out to 70*.

One more question...this in reference to FiTech's explanation given to the guy on ranchero forum, do you have a single or dual plane intake? FiTech claims his single plane intake is responsible for the unburned hydro-carbons making it to the O2 sensor. I've read that EFI systems like wide LSA's...but I think that applies to the port injected EFI using the long, torque efficient intake designs. I think that came about from guys putting a narrow LSA cam in an engine using long intake runner EFI and getting poor low end response. If you mismatch a carbed engine this way, you'll still get poor low end response.

Here's the post (#152) if anyone wants to read: http://www.ranchero.us/forum/index.php?threads/1967-500-buster-main-restoration-thread.3688/page-8

I'm going to run a Walboro in-tank unit. I need a new tank anyway and this was the excuse I needed to go ahead and replace it. I thought about using their "fuel command center" that mounts under the hood so you can use your existing mechanical fuel pump, but it's already cluttered under there as it is. I'll also be using the Fitech to control my timing and bought the 1200hp version.

I'm also very interested in the FiTech unit. I think TonyMuscle is also going to install this system on his stang. I look forward to reading about the install & results from you guys.

I am using dual plane manifold. You would think that you could lean out the A/F ratio to correct that.

 

[L.C.Gray]

I wonder if those truncated ports are 1/4 wave resonators?

Overthinking that one for the technology of its time... That's where an equalizer tube connected the two manifold halves...