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Author Topic:   Wooohooo!! She's purrin'!!
rockafellz
Gearhead

Posts: 408
From: San Lorenzo, CA, USA
Registered: Aug 2001

posted 10-21-2002 12:29 AM     Click Here to See the Profile for rockafellz   Click Here to Email rockafellz     Edit/Delete Message   Reply w/Quote
Hey Fellas,

Couldn't wait 2 weeks for MSD to fix the used 6AL so I went out and bought one last friday (gonna sell the used one when fixed). Installed it saturday and fired right up!! This time with the new 2 chamber delta flowmasters (sorry John and Alex, I know how you feel about them but I had these already )

The sound isn't as loud as I thought, but then again I have no basis for comparison. We put a timing light to it, revved it to 3500 and I adjusted it to 34 degrees (seller recommended 36, but just playing the conservative game right now). It idles at 1000-1100 in park and 700-900 in drive.

My dad and I took it for a test drive and this thing has some BALLS!! And I haven't even passed 4500 yet (still breaking it in).

One concern though. It's running about 9-10 in. of vacuum pressure and when granny driving it shifts late and when slowing down, it downshifts to 1st at about 15-20mph. My first thought is to back out the vacuum modulator on the C4 since it's screwed in about 4 turns. Am I on the right track for diagnosing this problem?

Thanks in advance.

Erik

------------------
1966 Ford Mustang 2+2
Mine - Restomod in Progress

1966 Ford Mustang Coupe
Dad's - Original Unrestored

[This message has been edited by rockafellz (edited 10-21-2002).]

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Moneymaker
Administrator

Posts: 14914
From: Lyons, IL, USA
Registered: May 99

posted 10-21-2002 10:15 AM     Click Here to See the Profile for Moneymaker   Click Here to Email Moneymaker     Edit/Delete Message   Reply w/Quote
Very nice Erik.
Yes, you are on the right track with the modulator adjustment.

------------------
Alex Denysenko
Co-Administrator and Moderator

NHRA/IHRA/SRA member and licensed Superstock driver
MCA member# 53321
NHRA and IHRA SS/LA National Record Holder '00, '01, & '02
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28
Professional Manwhore
The Barry of BarrysGrrl

Quote #1: "I never met a magazine mechanic I liked."
Quote #2: "Make sure brain is in gear before engaging mouth!"
Quote #3: "If you can't run with the big dogs, stay on the porch!"

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Fastymz
Moderator

Posts: 6421
From: Reno Nv USA MEM#1240
Registered: Apr 2001

posted 10-21-2002 04:20 PM     Click Here to See the Profile for Fastymz   Click Here to Email Fastymz     Edit/Delete Message   Reply w/Quote
THATS cool Erik,what the heck are you doing GRANNY DRIVING it.

SCOOP

------------------
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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rockafellz
Gearhead

Posts: 408
From: San Lorenzo, CA, USA
Registered: Aug 2001

posted 10-22-2002 12:29 AM     Click Here to See the Profile for rockafellz   Click Here to Email rockafellz     Edit/Delete Message   Reply w/Quote
Alright Alex, I backed the vacuum modulator out about 3.5 turns (almost sticking out) and it still seems to downshift too early (~15mph) when coming to a stop. It never used to do this with the old engine, but then again the old engine made 23 inches of vacuum. Current motor is 9-10 in. Does the transmission downshifting early have anything to do with the vacuum?

I'm not sure what else to look at at this point. Anything else you guys think I should check? The vacuum modulator tubing is connected directly to the intake manifold fitting.

Thanks in advance.

Erik

------------------
1966 Ford Mustang 2+2
Mine - Restomod in Progress

1966 Ford Mustang Coupe
Dad's - Original Unrestored

[This message has been edited by rockafellz (edited 10-22-2002).]

[This message has been edited by rockafellz (edited 10-22-2002).]

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rockafellz
Gearhead

Posts: 408
From: San Lorenzo, CA, USA
Registered: Aug 2001

posted 10-22-2002 12:33 AM     Click Here to See the Profile for rockafellz   Click Here to Email rockafellz     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by Fastymz:
THATS cool Erik,what the heck are you doing GRANNY DRIVING it.

SCOOP


Hey Scoop , just fine tuning it and sorting out all the little things.

Erik

------------------
1966 Ford Mustang 2+2
Mine - Restomod in Progress

1966 Ford Mustang Coupe
Dad's - Original Unrestored

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Fastymz
Moderator

Posts: 6421
From: Reno Nv USA MEM#1240
Registered: Apr 2001

posted 10-22-2002 01:57 AM     Click Here to See the Profile for Fastymz   Click Here to Email Fastymz     Edit/Delete Message   Reply w/Quote
Cool once you get that all done.Head over to Sear Point and post some numbers for us.

SCOOP

------------------
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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rockafellz
Gearhead

Posts: 408
From: San Lorenzo, CA, USA
Registered: Aug 2001

posted 10-22-2002 11:18 PM     Click Here to See the Profile for rockafellz   Click Here to Email rockafellz     Edit/Delete Message   Reply w/Quote
Well, I called Dynamic Racing this afternoon and they said I don't have enough vacuum I don't know whether to frown or smile. Nothing beats a viscious idle and a car that wants to creep forward at the stop light

They said I need at least 15in.hg of vacuum for the auto feature of the transmission to stop downshifting too early and upshifting too late. The said I could shave off the pin inside the modulator about 1/16" and switch to a bigger modulator. Might help but not a whole lot.

Is there anything I could do now to bring the vacuum level up w/o spending more money ? I've spent a $h!tload the past couple of months and want to slow down a bit. Again it's at about 9-10in.hg at idle in park.

Thanks in advance.

Erik

------------------
1966 Ford Mustang 2+2
Mine - Restomod in Progress

1966 Ford Mustang Coupe
Dad's - Original Unrestored

[This message has been edited by rockafellz (edited 10-22-2002).]

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steve'66
Gearhead

Posts: 4712
From: Sonoma,CA,USA
Registered: Mar 2000

posted 10-23-2002 12:00 AM     Click Here to See the Profile for steve'66   Click Here to Email steve'66     Edit/Delete Message   Reply w/Quote
Erik,

Manual shift it.

SteveW

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rockafellz
Gearhead

Posts: 408
From: San Lorenzo, CA, USA
Registered: Aug 2001

posted 10-23-2002 12:14 AM     Click Here to See the Profile for rockafellz   Click Here to Email rockafellz     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by steve'66:
Erik,

Manual shift it.

SteveW


Yup, that's what i'm gonna do. To disable the car from downshifting in D3 I can just remove the vacuum modulator line and plug it right? How about the vacuum modulator itself, is it ok just sitting there or should I cap it?

Erik

------------------
1966 Ford Mustang 2+2
Mine - Restomod in Progress

1966 Ford Mustang Coupe
Dad's - Original Unrestored

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steve'66
Gearhead

Posts: 4712
From: Sonoma,CA,USA
Registered: Mar 2000

posted 10-23-2002 12:21 AM     Click Here to See the Profile for steve'66   Click Here to Email steve'66     Edit/Delete Message   Reply w/Quote
Erik,

I'd rather have a manual shift valve body. But, I'm not a auto tranny guy, so I'll stand down for an expert opinion.

SteveW

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