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Author
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Topic: fine tuning engine
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streetstang67
Gearhead Posts: 257
From: SC, USA
Registered: Nov 2002
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posted 03-22-2003 12:09 AM
   
I'm looking to pick up some hp and effecientcy by making my engine run as best as it can. What are some tuning tricks that will do that? I know there is something about advancing timing or something like that. What about some carb tuning tips. Anything else? By the way, its a 4bbl 289 w/headers and c-4. Thanks
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Fastymz
Moderator Posts: 10683
From: Reno Nv USA MEM#1240
Registered: Apr 2001
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posted 03-22-2003 02:15 AM
What have you done already,whats your timing at now? What jets in your carb,what kind of carb?------------------
SCOOP
oddly obsessed with big scoops on little Mustangs 2.26 60'S
14.9 @ 90.86MPH 65 coupe,351w,C4,Big Boss 429 hood scoop,8"3.40 TracLoc,Cragar SS,Black Suede. https://mustangsandmore.com/ubb/Fastymz.html
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streetstang67
Gearhead Posts: 257
From: SC, USA
Registered: Nov 2002
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posted 03-22-2003 04:12 PM
I haven't done anything. don't know what the timing is at now, probably stock settings. Carb is out of the box holley 600 cfm vac. secondaries.
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Fastymz
Moderator Posts: 10683
From: Reno Nv USA MEM#1240
Registered: Apr 2001
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posted 03-22-2003 04:33 PM
Have you ever changed the timing before?
If so start with a good tune up.Change plugs and check and or change the cao and rotor.Check and adjust the timing.Check and adjust the A/F mixtures screws on the carb.
Getting the car running the best it can now.Then you can start to advance the timing by 2 at a time and test the car see how it feels.This is better done when at the track.------------------
SCOOP
oddly obsessed with big scoops on little Mustangs 2.26 60'S
14.9 @ 90.86MPH 65 coupe,351w,C4,Big Boss 429 hood scoop,8"3.40 TracLoc,Cragar SS,Black Suede. https://mustangsandmore.com/ubb/Fastymz.html
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streetstang67
Gearhead Posts: 257
From: SC, USA
Registered: Nov 2002
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posted 03-22-2003 04:51 PM
How do I do all that stuff  ? With my setup, where should I set my timing?
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itlbrnmoff
Gearhead Posts: 670
From: Indianapolis,IN.USA
Registered: Nov 2002
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posted 03-22-2003 04:52 PM
If you have a factory cast iron intake, try switching it to an Edelbrock RPM aluminum.
And maybe try a Holley double pumper 600cfm carb, instant power when you mash it down, but fuel mileage might suffer a bit, unless you can keep your foot out of it most of the time...but that's no fun. 
I'm not a Holley expert, I'm just still excited about how much better my engine runs when I switched to the double pumper. ------------------
Low Dollar 1983 Mustang GT W/T-tops...
306 4bbl. T-5 3.45 trac-loc...it'll burn 'em off
1988 Lincoln LSC
5.0 auto full power
[This message has been edited by itlbrnmoff (edited 03-22-2003).]
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Fastymz
Moderator Posts: 10683
From: Reno Nv USA MEM#1240
Registered: Apr 2001
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posted 03-22-2003 05:03 PM
quote:
Originally posted by streetstang67:
How do I do all that stuff ? With my setup, where should I set my timing?
Ok now you need to go out and get a Ford Shop Manual.A must have book,and pick up an Haynes repair manual too.Both books will tell you how to.And then these guys can tell you,whats the best.  ------------------
SCOOP
oddly obsessed with big scoops on little Mustangs 2.26 60'S
14.9 @ 90.86MPH 65 coupe,351w,C4,Big Boss 429 hood scoop,8"3.40 TracLoc,Cragar SS,Black Suede. https://mustangsandmore.com/ubb/Fastymz.html
IP: Logged |
streetstang67
Gearhead Posts: 257
From: SC, USA
Registered: Nov 2002
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posted 03-25-2003 02:29 PM
I just don't know what all to change on my carb. And where to set timing on my engine
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Fastymz
Moderator Posts: 10683
From: Reno Nv USA MEM#1240
Registered: Apr 2001
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posted 03-26-2003 12:55 AM
Try the timing at 10,and get a vacuum gauge and turn the idle mixture screws one at a time,until you get the highet reading.Then turn your idle back to were it was before you started.Then try your timing at 12-14 and see where the car runs and drives the best.
------------------
SCOOP
oddly obsessed with big scoops on little Mustangs "Why do people who know the least know it the
loudest?" 2.26 60'S
14.9 @ 90.86MPH 65 coupe,351w,C4,Big Boss 429 hood scoop,8"3.40 TracLoc,Cragar SS,Black Suede. https://mustangsandmore.com/ubb/Fastymz.html
IP: Logged |
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