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Performance, Brainstorming & Tuning Talk about modifications, or anything else associated with performance enhancements. Have a new idea for performance/reliability? Post it here. No idea is stupid! (please use Detailing and Appearance for cosmetic ideas)

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Old 09-30-2005, 12:35 PM   #21
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Have a look in the OE Holley modulator you have now and see if it has an adjustable screw in it... I think some of them are adjustable... I was looking for an old one to glance at... Not sure where it went

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Old 09-30-2005, 06:43 PM   #22
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Jr'*, I couldn't find a screw on the OEM modulator. So I went to pepboys to get an adjustable one. $28. I remembered seeing it on autozone or advance'* web site last nite for $17 so I went to advance and picked one up for that price.
It is much smaller than teh OEM one and there is an adjustable screw inside the vacuum port. I was able to firm it up so there is no slipping at 6400 too. Hopefully this will help my trans hold on for a little longer as I'm pretty sure this is just a temporary fix.
Ahh well at least this worked out.


Oh yeah I highly recomend getting the adjustable vac modulator just for performance sake. (for those with 4t60'*. The B&M shift plus vac adjuster does essentially the same thing but it costs $50+. The modulator I picked up today was $17 like I said up top. On top of that, there is only one bolt holding it in and you do not have to drain the trans fluid to install it.
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Old 09-30-2005, 07:22 PM   #23
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I'd glad that you finally got that 3800 running how it should. . . ...Sucks about the trans but you'll be able to build one to complement the engine very well! I see a 3.33 final drive and a high stall converter in your future!
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Old 09-30-2005, 08:03 PM   #24
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Quote:
Originally Posted by 95naSTA
Jr'*, I couldn't find a screw on the OEM modulator. So I went to pepboys to get an adjustable one. $28. I remembered seeing it on autozone or advance'* web site last nite for $17 so I went to advance and picked one up for that price.
It is much smaller than teh OEM one and there is an adjustable screw inside the vacuum port. I was able to firm it up so there is no slipping at 6400 too. Hopefully this will help my trans hold on for a little longer as I'm pretty sure this is just a temporary fix.
Ahh well at least this worked out.


Oh yeah I highly recomend getting the adjustable vac modulator just for performance sake. (for those with 4t60'*. The B&M shift plus vac adjuster does essentially the same thing but it costs $50+. The modulator I picked up today was $17 like I said up top. On top of that, there is only one bolt holding it in and you do not have to drain the trans fluid to install it.
Glad to see you are have with the results.

Do you have the part # for the adjustable vacuum modulator? I'm interested in one as I am ordering my 2.4" pulley now, and a chip with +4* timing, +200 rpm shifts, and removed the speed limiter (what should I get for fuel adjustment?), and have my high flow cat on the way.
I'd like to get the modulator tonight as I have track day next weekend and Sunday is my only day to install and adjust (to appropriate setting) before the track.

Thanks in advance.
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Old 10-01-2005, 02:35 AM   #25
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Quote:
Originally Posted by OLBlueEyesBonne
Quote:
Originally Posted by 95naSTA
Jr'*, I couldn't find a screw on the OEM modulator. So I went to pepboys to get an adjustable one. $28. I remembered seeing it on autozone or advance'* web site last nite for $17 so I went to advance and picked one up for that price.
It is much smaller than teh OEM one and there is an adjustable screw inside the vacuum port. I was able to firm it up so there is no slipping at 6400 too. Hopefully this will help my trans hold on for a little longer as I'm pretty sure this is just a temporary fix.
Ahh well at least this worked out.


Oh yeah I highly recomend getting the adjustable vac modulator just for performance sake. (for those with 4t60'*. The B&M shift plus vac adjuster does essentially the same thing but it costs $50+. The modulator I picked up today was $17 like I said up top. On top of that, there is only one bolt holding it in and you do not have to drain the trans fluid to install it.
Glad to see you are have with the results.

Do you have the part # for the adjustable vacuum modulator? I'm interested in one as I am ordering my 2.4" pulley now, and a chip with +4* timing, +200 rpm shifts, and removed the speed limiter (what should I get for fuel adjustment?), and have my high flow cat on the way.
I'd like to get the modulator tonight as I have track day next weekend and Sunday is my only day to install and adjust (to appropriate setting) before the track.

Thanks in advance.
Hmmm. Part number? I'm not going to be able to get it till sunday. (I'm not home)
It looks exactly like this:
http://www.bulkpart.com/Merchant2/me...roduct_Count=1
If you go to any parts sore, chances are they will either hand you this or another adjustable modulator. Just ask for a modulator and look inside the vac port to see if it has a flat head screw.
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Old 10-02-2005, 04:19 PM   #26
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Well the modulator did proove to be a temporary fix. I got on it yesterday and it wouldn't shift wot. :(
It'* going to be a looooooong fall/winter/spring. I won't have funds till then.

But OBEBonnie, heres the p/n with a pic:
Name:  mod.jpg
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