Thread: Timing or other issue after L67 to L32 swap

On my second bag. Glad I'm subscribed 'cause I'll be tackling this soon...won't have to search for the info.

67goat
If this is the problem tell your brother I said thanks. LOL

C'mon Rico.. just ask. You know I got pics of it all. Hell I even have pics of modded N* cable bracket etc etc etc etc.

Feel free to peruse my photobucket account

BillBoost37
Boosted

I'd suggest albums
Build up misc
Modding Visits (most of them have great stuff)
Helpful pics

Stay away from anything labeled transmission (in case the curse spreads through the cable line) lol

i suggest having your brother view this thread, so he can see the pics posted. if he has not that is.

billboost has spoken, this is the word of god, believe what he says.

there are quite a few threads on this topic just search around you'll find them, one is a sticky i think.

what i believe you have there is a gen V swap using a l67 throttle body. well at least thats the way you need to deal with it.

if you look at the l32 throttle body stock set up, or in the plastic air tube ( i think, i could be wrong here) it should have the nipple on it for the line they are saying to drill and tap into the l67 tb

heres one http://www.grandprixforums.net/eaton...5-a-49039.html

the part you are looking for from that thread...


What custom work do I have to do to make this work?

Well, good thing you asked!!

1) First off, you have to decide what do with the EVAP sensor. As you can see from the pictures, the Gen V has the EVAP sensor directly on the blower, whereas on the L67, this sensor sits independently from the blower. You have three choices:

• Utilize the Gen V sensor (can only be done with L67 TB, you will need to plug the evap port on the tb. Then remove the hose that runs from the tb to the old evap. Then plug the other line onto the l32 evap)
• Utilize your Gen III sensor and block off the Gen V sensor outlet (the intake manifold block-off plate offered by ZZP is a perfect fit)
• Delete EVAP codes from PCM (requires a tuner), and not run any EVAP at all!

2) Second modification you must make is the PCV system extension. If you look at the Gen V, and locate the EVAP sensor, look to the right, and you'll see a small nipple. This is part of your PCV system, this MUST be utilized, or you WILL have a vacuum leak!! Below are your choices:

• You can run a tube from this nipple, to the air intake, this inlet must be located behind the MAF sensor, but before your throttle butterfly. In the LS1/Northstar setups, this is easily done by threading a tube into the air intake between the MAF sensor and the throttle body. On the L67 throttle body, it’s a little more involved. There is a brass plug on the bottom of the l67 tb, drill out the plug then tap it.
• You can cap this nipple off, and run a breather on the front valve cover. (***NOTE*** this allows un-metered air to enter the PCV system, and may cause problems down the road)

Give your brother a beer for helping this much. Then remind him that he put a solid TB adapter plate and therefore no "internal" pcv can exist. Get the cap off there and route that line to a location between the maf and throttle plate. Which leaves you at drilling into the bottom of your TB to make it right.

Now on that evap. There's two things you can do.
1. Remove the Gen V evap and plug the hole in the charger with a block off plate.
2. Take your evap off the SC to alt bracket, connect the hose from the fuel tank to the Gen V Evap, connect the red electrical connector to the Gen V evap and put that plug from the pcv nipple on the TB nipple. See...now it didn't go to waste.

As for the feeling like vacuum is present. You really shouldn't feel any vacuum or pressure when you pull a vc cap. Unless you get a crankcase vac pump.

Fix these two extremely small things and that may take care of a lot of problems for you. If your brother isn't convinced....tell him "BillBoost did this same thing Mon-Thur of this week and that car runs great. Bill suggested I give you beer and route a couple lines myself, here's a 30 rack for being my brother. Now please sit here and watch me struggle with a vacuum line until it hurts you too much to watch, then help me. And .....bring me bandaids." This should get him to have mercy on you and want to shut you up in order to leave him alone on this issue. The work will be done.

Goat...I've been to those other forums.. mighta been banned from one of 'em...lol Ever been banned for helping a guy? I have.

How dare you Bill?!?!

You probably would have been banned from this site like 7000 times if it had the same policies.

9,338 to be exact

we need your story first. how's the car?

I'd have to look at the top of the TB to see what you tapped into. You may have tapped into the wrong area, might not be too wrong though.

Ok, I looked. Right..cause everyone has spare parts laying around to look at. Don't tell me you don't. LOL

That hole does drop down into the TB between the maf and throttle plate. This is good. Now the potential bad: it feeds air to the IAC for idle control. Therefore if you are getting any oily residue (common with pcv) you will end up coating the IAC valve and possibly gunking it up much quicker than usual.

I'd say it's something to keep in mind. I see two ways to work with this.
1. PCV catch can between the nipple and the throttle body.
2. Know if your idle gets goofy that it's time to clean it.