Series III downgrade to Series II

**Rolling Thunder** · 05-29-2009

Anyone?

**Clar2478** · 05-29-2009

Take a look at this thread, it might help answer a few questions.

Fiero Swap

**Rolling Thunder** · 05-29-2009

Thanks for the post. I could show you 20-50 that are just like that. They have some vague information, but the specifics are hard to get. That's why I come to specialty forums, like these

**Rolling Thunder** · 05-29-2009

Should I look at getting another oil pump or pickup? I'm going to pull off the oil pan anyways.

Does anyone make decent headers with the outlet at the stock location? The SLP headers I've seen go straight through the Fiero trunk. The stock headers give enough space to work around the trunk. Mustang headers?

Does it matter what Series II wiring harness I use? Year matters? SC vs non-SC matters?

**Rolling Thunder** · 05-31-2009

no one?

**Rolling Thunder** · 05-31-2009

Should I change the oil in the supercharger?

**Scimmia** · 05-31-2009

I haven't read through the whole thread, but the wiring harness is different for different vehicles (GP vs Impala vs Regal, etc), and SC vs NA have a different MAP connection, only
SC harnesses have the wiring for the BBV solenoid, and and some NA harnesses use a different connector for the injectors.

**Rolling Thunder** · 05-31-2009

I got a trade. A guy is trading me a Series II GTP wiring harness and ECU (with his manual trans coding) for a few GP parts.

Edit: Does the throttle body have to be off of a supercharged 3800 or is a NA throttle body ok? This is what I'm looking at right now:
http://cgi.ebay.com/ebaymotors/2000-...320365233368QQ

**Sabrewings** · 05-31-2009

The NA throttle body is smaller.

**Rolling Thunder** · 05-31-2009

What do you guys think of the ZZP oil pan gasket/windage tray?

What about the ZZP Power Log exhaust manifold?

**Sabrewings** · 06-01-2009

Originally Posted by Rolling Thunder

What do you guys think of the ZZP oil pan gasket/windage tray?

It's an OEM replacement. Not much else.

Originally Posted by Rolling Thunder

What about the ZZP Power Log exhaust manifold?

It replaces the anemic front exhaust manifold. Good mod.

**Rolling Thunder** · 06-01-2009

Originally Posted by Sabrewings

It replaces the anemic front exhaust manifold. Good mod.

They have options for a rear exhaust manifold. Any thoughts on that? I've been unable to find any pictures of them.

**Sabrewings** · 06-01-2009

The stock rear is actually pretty good by itself. A little porting could be useful.

**Rolling Thunder** · 06-01-2009

Any thoughts on the ZZP oil volume kit?

Oil volume kit link

I emailed them and they said it increases oil pressure by about 5 psi.

btw, is there a boost sensor on the Series III SC engine?

**Rolling Thunder** · 06-05-2009

Should I change the oil in the supercharger? Looking at the transmission fluid, I don't think the last owner ever changed anything, but the oil.

**Rolling Thunder** · 06-15-2009

What does the Series III use for a fuel pressure regulator since it's a "returnless" system?

**Rolling Thunder** · 06-16-2009

What do Series III Grand Prix's do for fuel pressure regulation? I've got to mimic that

**Clar2478** · 06-16-2009

that link I posted earlier showed what he did to change up his returnless system. maybe take a look at his to see if you can figure out what he did or shoot him a pm.

**blueguy** · 06-16-2009

Originally Posted by Rolling Thunder

Any thoughts on the ZZP oil volume kit?

Oil volume kit link

I emailed them and they said it increases oil pressure by about 5 psi.

Probably won't hurt. Never knew anyone that had it.

Originally Posted by Rolling Thunder

btw, is there a boost sensor on the Series III SC engine?

In the DIC...it shows bars...but you should run a manual gauge...at least that is what I would do.

Originally Posted by Rolling Thunder

Should I change the oil in the supercharger? Looking at the transmission fluid, I don't think the last owner ever changed anything, but the oil.

I would. $20 for a few bottles of GM oil...and you only need 2. Suck it out with a turkey baster and put in the new shiz. End of story.

Originally Posted by Clar2478

that link I posted earlier showed what he did to change up his returnless system. maybe take a look at his to see if you can figure out what he did or shoot him a pm.

That was my guess ^^.

**Rolling Thunder** · 06-16-2009

It looks like guys are using the Tee fitting with a pressure relief valve off of a Series II fuel rail. I saw that there are pressure relief valves available for Series II cars. What do you guys think?

01 02 03 04 Buick Regal 3.8L Fuel Pressure Regulator:eBay Motors (item 250428340750 end time Jun-19-09 06:08:10 PDT)

Also, one of the main swappers out there uses a pressure relief valve that's built into a fuel filter. Anyone know any fuel filters that double as pressure relief valves?