Forums
New posts
Search forums
What's new
New posts
New media
New media comments
Latest activity
Media
New media
New comments
Search media
Members
Registered members
Member Map
Current visitors
Tutorials
Engine, Transmission, Drive Line, Diff, etc...
Exterior, Body, Chassis & Paint
Interior Restoration
Brakes & Suspension
Electrical & Lighting
Presentation, Polish & Detailing
General Maintenance & Repair
Misc Tutorials
Forum Tutorials
7173 Wiki
Log in
Register
What's new
Search
Search
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Install the app
Install
General 71-73 Discussion
71-73 Mustang Talk
What Powertrain for My 73 Mustang Convertible?
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Help Support 7173Mustangs.com:
Message
<blockquote data-quote="mrgmhale" data-source="post: 405592" data-attributes="member: 7171"><p>I have found I can get up to 17 MpG with a 351W if it is tuned properly, the vacuum advance diaphragm is not leaking or ruptured, the power valve in the carb is not leaking, and I keep my foot out of the throttle WOT position. Another consideration is the rear axle ratio, of course. If you are running 3.0:1 or steeper gears it is easier to get decent MPG readings. But once you go to 3.5:1 or lower it is a bit harder. In our 73 Mach 1, with its transplanted, Street/Strip built 351W, C4 auto tranny, and 3.51 TractionLok rear axle gear set I would usually get closer to 1 MPH, whereas the tamer 73 Mustang Convertible it able t hit 17 MPG easily. At least that is where things were until last Spring.</p><p></p><p>What changed? We swapped an AOD into the 73 Mach 1, and reduced our engine RPM at 60 NPH from 2,850 to about 1,875 or so. That will help with the MPG, while preserving the spry lower speed performance with the 3.5:1 rear axle ratio. For the record, the only reason I care about MPG is for driving range, to make certain I can find non-ethanol gasoline along the way without getting the gas tank level down to desperate fumes. The AOD was a great move for us. There were plenty of nay-sayers who warned me of the difficulties I could expect. It was not an easy project, but it wasn't hard either. If anyone would like our vendor list, parts list, and YouTube video links just email me at <a href="mailto:gilhale@gmail.com">gilhale@gmail.com</a>. I am happy to share our AOD experience.</p></blockquote><p></p>
[QUOTE="mrgmhale, post: 405592, member: 7171"] I have found I can get up to 17 MpG with a 351W if it is tuned properly, the vacuum advance diaphragm is not leaking or ruptured, the power valve in the carb is not leaking, and I keep my foot out of the throttle WOT position. Another consideration is the rear axle ratio, of course. If you are running 3.0:1 or steeper gears it is easier to get decent MPG readings. But once you go to 3.5:1 or lower it is a bit harder. In our 73 Mach 1, with its transplanted, Street/Strip built 351W, C4 auto tranny, and 3.51 TractionLok rear axle gear set I would usually get closer to 1 MPH, whereas the tamer 73 Mustang Convertible it able t hit 17 MPG easily. At least that is where things were until last Spring. What changed? We swapped an AOD into the 73 Mach 1, and reduced our engine RPM at 60 NPH from 2,850 to about 1,875 or so. That will help with the MPG, while preserving the spry lower speed performance with the 3.5:1 rear axle ratio. For the record, the only reason I care about MPG is for driving range, to make certain I can find non-ethanol gasoline along the way without getting the gas tank level down to desperate fumes. The AOD was a great move for us. There were plenty of nay-sayers who warned me of the difficulties I could expect. It was not an easy project, but it wasn't hard either. If anyone would like our vendor list, parts list, and YouTube video links just email me at [email]gilhale@gmail.com[/email]. I am happy to share our AOD experience. [/QUOTE]
Insert quotes…
Verification
Post reply
General 71-73 Discussion
71-73 Mustang Talk
What Powertrain for My 73 Mustang Convertible?
Join the conversation!
Register today and take advantage of membership benefits.
It's FREE!
Participate in both public and private conversations with people that share your interest
Start new threads
See less ads
Enter your email address to join:
Thank you! Please check your email inbox to continue.
There's already a member associated with this email address. Please
log in
or
retrieve your password
.
Already a member?
Click here to log in
Don't like ads?
Did you know that registered members can turn off the ads?
Register today and take advantage of membership benefits.
Enter your email address to join:
Thank you! Please check your email inbox to continue.
There's already a member associated with this email address. Please
log in
or
retrieve your password
.
Already a member?
Click here to log in
Top
