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I am installing a Holley 92mm TB on my 02 TA. It has the LS6 intake, not getting the Dorman 92mm intake for a few weeks, and sold my TB so I need a temp fix.
Any tips? Going with a ICT Billet 3 bolt intake to 92mm 4 bolt TB adapter. ICT has a note that a spacer is needed, along with longer bolts. Anyone else tried this? Any other fitment issues?
I have LS1 edit, so I will be tuning. Added heads/cam/42# injectors, so tuning is required. Any surprises I should be watching for?
Thanks in advance,
Darden
Last edited by Senator; 12-13-2017 at 05:09 AM.
Reason: Didn't get any tips...job done.
Received my Holley sniper throttle body from Summit and it looks and feels like a quality product. Not at all like the Chinese eBay units. The original TPS fits. The original IAC does not.
I should get my adapter/spacer from ICT Billet soon. I will post any install/ clearance issues when it comes.
As far as fitment, the front opening diameter is slightly smaller than the stock unit, but a 1/8 inch thick spacer sleeve (3.75 in adapter) from a Spectre 9771 4 inch duct kit snugged it right up with no problem. I just happened to have the adapter sleeve from another project sitting around. I don't know if it is available separate or not.
My SLP angle air duct will have to be trimmed for the 3 bolt to 4 bolt adapter, I expect. But that won't hurt anything since the Dorman is about an inch farther forward at the throttle body flange which should make the duct just about perfect when the adapter is taken out.
The IAC for the Holley Sniper Throttle Body is the same as the one used on the 98-02 Dodge Dakota truck with the 5.9 liter engine. The IAC is a Delphi CV10155. It won't save you any money, but it may be easier to find locally.
Got the ICT Adapter today. It's a nice piece, but pretty much expect that from them. It raises the throttle body a bit so there is no problem with the 92mm Sniper was far as clearance from the water pump. Mine is a standard LS1 type water pump,
The only issue I had was that the 25mm long TB bolts that were supplied went all the way through the adapter and hit the intake on the bottom 2 bolts. I trimmed the two bolts to 18mm and no more problem.
The ICT website has a cryptic message about needing an additional spacer to fit a TB larger than 78mm. You can ignore that for this install.
ICT Billet 3 bolt TB to 4 bolt TB adapter installed clearance Adapter installed clearance showing ICT Billet bypass. Ready for TB. Note: Bolts are 5mm Allen heads, NOT 3/16. TB passenger side clearance to water pump TB to water pump front clearance Physical install completed. Ready to hook up the vacuum to valve cover line, add the IAC and air cleaner.
12-06-2017, 06:34 AM
Holley 92mm TB / LS6 intake Install. 
