I just bought one myself for a setup I am buying that doesnt some with the TB...Get a 00-05 TB from the N*...Here is the one I bought the other day...This will match up to the adapter that ZZP sells along with all the other needed parts that they sell.
If you go with the 2000 N* throttle body it is also advisable to increase the MAF sensor size. I run an SLP LS1 MAF sensor and the combo gives the full 75mm of flow capability. The tuning is a chore. You must import the LS1 MAF table values into your PCM program then adjust the PE tables to get the fueling right. It took many tries with the wideband to get it right. IMO, without a matching larger flowing MAF it is senseless to just up the size of the throttle body.
------------------ " THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Powerlog manifold, Northstar TB, LS1 MAF, 3" Flotech Afterburner Exhaust, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, HP Tuners VCM Suite. "THE COLUSSUS" 87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H " ON THE LOOSE WITHOUT THE JUICE "
thank you folks for your advice, experience & opinions...the shopping around for the parts will commence once i get back from vacation that just started; woohoo!
any pointers as to whom u recommend for the tb, ls1 maf, adapter plate etc/anything else req'd would be great in the meantime.
be well!
------------------ RATE ME IF YOU LIKE MY CRUISES!!! 1985 RED & SILVER CUSTOM GT 2.8 V6...IT LOOKS NICE!
Original 18" x 8" Motegi Roja's, 225-40-ZR18's front, 265-35-ZR18's rears, coil-overs, KYB shocks & struts, 2.5" drop, K&N filters, Holley side scoop, upgraded front & rear sway bars, poly, fully loaded, tinted, & some other nice custom stuff...
1985 GT SILVER CONVERSION PROJECT, 3800 SC SII powered, doesn't look as nice (yet), but it sure goes!
1995-older Northstars didn't use IAC valves, they used ISC (throttle kicker) motors which are not compatible with 3800 PCMs. So I would steer clear of this type of TB.
1996-99 Northstar throttle bodies did use conventional IAC valves. They also had a bolt-on plastic MAF housing which will accept 3800 Series 2 MAF sensors of both types (one requires modification), or you can keep the stock Northstar MAF sensor if you tune the 3800 PCM to work with it.
2000+ cable-op Northstar throttle bodies did not have a bolt-on MAF housing/sensor; which means if you use this TB you will need to get a stand-alone MAF sensor that can install into the induction system somewhere between the TB and air filter.
Personally I like using the 96-99 era TB's because their throttle cable brackets work well with the Fiero throttle cable (and Northstar cruise control unit). It is also convenient to have the MAF sensor housing bolted directly to the TB as this simplifies your induction setup. As with anything else, installing a larger TB by itself may not increase performance without having other supporting mods installed. You certainly don't want to just slap a larger throttle body onto a stock, unported blower housing IF that blower housing's inlet isn't already as big as the TB you are installed or at least opened up (ported) to match the size of the larger throttle body you want to use.
Here are some pictures of one I installed on a Series 3 SC swap I did not too long ago. The throttle body adapter plate was curtousey of Dave @ tripleedgeperformance.com.
-ryan
------------------ OVERKILL IS UNDERRATED Custom GM OBD1 & OBD2 Tuning | Engine Conversions & more | www.gmtuners.com
[This message has been edited by Darth Fiero (edited 06-16-2012).]
1995-older Northstars didn't use IAC valves, they used ISC (throttle kicker) motors which are not compatible with 3800 PCMs. So I would steer clear of this type of TB.
1996-99 Northstar throttle bodies did use conventional IAC valves. They also had a bolt-on plastic MAF housing which will accept 3800 Series 2 MAF sensors of both types (one requires modification), or you can keep the stock Northstar MAF sensor if you tune the 3800 PCM to work with it.
2000+ cable-op Northstar throttle bodies did not have a bolt-on MAF housing/sensor; which means if you use this TB you will need to get a stand-alone MAF sensor that can install into the induction system somewhere between the TB and air filter.
Personally I like using the 96-99 era TB's because their throttle cable brackets work well with the Fiero throttle cable (and Northstar cruise control unit). It is also convenient to have the MAF sensor housing bolted directly to the TB as this simplifies your induction setup. As with anything else, installing a larger TB by itself may not increase performance without having other supporting mods installed. You certainly don't want to just slap a larger throttle body onto a stock, unported blower housing IF that blower housing's inlet isn't already as big as the TB you are installed or at least opened up (ported) to match the size of the larger throttle body you want to use.
Here are some pictures of one I installed on a Series 3 SC swap I did not too long ago. The throttle body adapter plate was curtousey of Dave @ tripleedgeperformance.com.
-ryan
Sorry to jack this thread, please reply to me via PM if it's better for everyone. I am doing a S-III swap in my 86GT w/ the N* TB. I like the adaptor plate in this picture, the alternator relocate and the dogbone bracket. If i can get more info on them or this car's build thread, I would really appreciate it. Again, sory for jacking the thread.
What are the advantages of the northstar throttle body?
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If the engine needs more air flow such as if you are running more boost. My Gen V supercharger w 3.4L pulley puts out 11 psi of boost and that's why I run one. If you want to run this much boost, I can tell you from experience that you will never get rid of the KR's no matter how hard you try. I had to add the ZZ SSIC ( intercooler) with a Flojet RV pump and a hefty size heat exchanger.
------------------ " THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Powerlog manifold, Northstar TB, LS1 MAF, 3" Flotech Afterburner Exhaust, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, HP Tuners VCM Suite. "THE COLUSSUS" 87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H " ON THE LOOSE WITHOUT THE JUICE "
What are the advantages of the northstar throttle body?
\
If the engine needs more air flow such as if you are running more boost. My Gen V supercharger w 3.4L pulley puts out 11 psi of boost and that's why I run one. If you want to run this much boost, I can tell you from experience that you will never get rid of the KR's no matter how hard you try. I had to add the ZZ SSIC ( intercooler) with a Flojet RV pump and a hefty size heat exchanger. [/QUOTE]
AND were you able to eliminate the KR with the IC?
